/* Subroutine */ int analys_(real *speech, integer *voice, integer
*pitch, real *rms, real *rc, struct lpc10_encoder_state *st)
{
/* Initialized data */
static integer tau[60] = { 20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,
35,36,37,38,39,40,42,44,46,48,50,52,54,56,58,60,62,64,66,68,70,72,
74,76,78,80,84,88,92,96,100,104,108,112,116,120,124,128,132,136,
140,144,148,152,156 };
static integer buflim[4] = { 181,720,25,720 };
static real precoef = .9375f;
/* System generated locals */
integer i__1;
/* Local variables */
real amdf[60];
integer half;
real abuf[156];
real *bias;
extern /* Subroutine */ int tbdm_(real *, integer *, integer *, integer *,
real *, integer *, integer *, integer *);
integer *awin;
integer midx, ewin[6] /* was [2][3] */;
real ivrc[2], temp;
real *zpre;
integer *vwin;
integer i__, j, lanal;
extern /* Subroutine */ int rcchk_(integer *, real *, real *), mload_(
integer *, integer *, integer *, real *, real *, real *);
real *inbuf, *pebuf;
real *lpbuf, *ivbuf;
real *rcbuf;
integer *osbuf;
extern /* Subroutine */ int onset_(real *, integer *, integer *, integer *
, integer *, integer *, integer *, struct lpc10_encoder_state *);
integer *osptr;
extern int placea_(integer *, integer *
, integer *, integer *, integer *, integer *, integer *, integer *
, integer *), dcbias_(integer *, real *, real *), placev_(integer
*, integer *, integer *, integer *, integer *, integer *, integer
*, integer *, integer *, integer *, integer *);
integer ipitch;
integer *obound;
extern /* Subroutine */ int preemp_(real *, real *, integer *, real *,
real *), voicin_(integer *, real *, real *, integer *, integer *,
real *, real *, integer *, real *, integer *, integer *, integer *,
struct lpc10_encoder_state *);
integer *voibuf;
integer mintau;
real *rmsbuf;
extern /* Subroutine */ int lpfilt_(real *, real *, integer *, integer *),
ivfilt_(real *, real *, integer *, integer *, real *), energy_(
integer *, real *, real *), invert_(integer *, real *, real *,
real *);
integer minptr, maxptr;
extern /* Subroutine */ int dyptrk_(real *, integer *, integer *, integer
*, integer *, integer *, struct lpc10_encoder_state *);
real phi[100] /* was [10][10] */, psi[10];
/* LPC Processing control variables: */
/* *** Read-only: initialized in setup */
/* Files for Speech, Parameter, and Bitstream Input & Output, */
/* and message and debug outputs. */
/* Here are the only files which use these variables: */
/* lpcsim.f setup.f trans.f error.f vqsetup.f */
/* Many files which use fdebug are not listed, since it is only used in */
/* those other files conditionally, to print trace statements. */
/* integer fsi, fso, fpi, fpo, fbi, fbo, pbin, fmsg, fdebug */
/* LPC order, Frame size, Quantization rate, Bits per frame, */
/* Error correction */
/* Subroutine SETUP is the only place where order is assigned a value, */
/* and that value is 10. It could increase efficiency 1% or so to */
/* declare order as a constant (i.e., a Fortran PARAMETER) instead of as
*/
/* a variable in a COMMON block, since it is used in many places in the */
/* core of the coding and decoding routines. Actually, I take that back.
*/
/* At least when compiling with f2c, the upper bound of DO loops is */
/* stored in a local variable before the DO loop begins, and then that is
*/
/* compared against on each iteration. */
/* Similarly for lframe, which is given a value of MAXFRM in SETUP. */
/* Similarly for quant, which is given a value of 2400 in SETUP. quant */
/* is used in only a few places, and never in the core coding and */
/* decoding routines, so it could be eliminated entirely. */
/* nbits is similar to quant, and is given a value of 54 in SETUP. */
/* corrp is given a value of .TRUE. in SETUP, and is only used in the */
/* subroutines ENCODE and DECODE. It doesn't affect the speed of the */
/* coder significantly whether it is .TRUE. or .FALSE., or whether it is
*/
/* a constant or a variable, since it is only examined once per frame. */
/* Leaving it as a variable that is set to .TRUE. seems like a good */
/* idea, since it does enable some error-correction capability for */
/* unvoiced frames, with no change in the coding rate, and no noticeable
*/
/* quality difference in the decoded speech. */
/* integer quant, nbits */
/* *** Read/write: variables for debugging, not needed for LPC algorithm
*/
/* Current frame, Unstable frames, Output clip count, Max onset buffer,
*/
/* Debug listing detail level, Line count on listing page */
/* nframe is not needed for an embedded LPC10 at all. */
/* nunsfm is initialized to 0 in SETUP, and incremented in subroutine */
/* ERROR, which is only called from RCCHK. When LPC10 is embedded into */
/* an application, I would recommend removing the call to ERROR in RCCHK,
*/
/* and remove ERROR and nunsfm completely. */
/* iclip is initialized to 0 in SETUP, and incremented in entry SWRITE in
*/
/* sread.f. When LPC10 is embedded into an application, one might want */
/* to cause it to be incremented in a routine that takes the output of */
/* SYNTHS and sends it to an audio device. It could be optionally */
/* displayed, for those that might want to know what it is. */
/* maxosp is never initialized to 0 in SETUP, although it probably should
*/
/* be, and it is updated in subroutine ANALYS. I doubt that its value */
/* would be of much interest to an application in which LPC10 is */
/* embedded. */
/* listl and lincnt are not needed for an embedded LPC10 at all. */
/* integer nframe, nunsfm, iclip, maxosp, listl, lincnt */
/* common /contrl/ fsi, fso, fpi, fpo, fbi, fbo, pbin, fmsg, fdebug */
/* common /contrl/ quant, nbits */
/* common /contrl/ nframe, nunsfm, iclip, maxosp, listl, lincnt */
/* Arguments to entry PITDEC (below) */
/* Parameters/constants */
/* Constants */
/* NF = Number of frames */
/* AF = Frame in which analysis is done */
/* OSLEN = Length of the onset buffer */
/* LTAU = Number of pitch lags */
/* SBUFL, SBUFH = Start and end index of speech buffers */
/* LBUFL, LBUFH = Start and end index of LPF speech buffer */
/* MINWIN, MAXWIN = Min and Max length of voicing (and analysis) windows
*/
/* PWLEN, PWINH, PWINL = Length, upper and lower limits of pitch window
*/
/* DVWINL, DVWINH = Default lower and upper limits of voicing window */
/* The tables TAU and BUFLIM, and the variable PRECOEF, are not */
/* Fortran PARAMETER's, but they are initialized with DATA */
/* statements, and never modified. Thus, they need not have SAVE */
/* statements for them to keep their values from one invocation to
*/
/* the next. */
/* Local variables that need not be saved */
/* Local state */
/* Data Buffers */
/* INBUF Raw speech (with DC bias removed each frame) */
/* PEBUF Preemphasized speech */
/* LPBUF Low pass speech buffer */
/* IVBUF Inverse filtered speech */
/* OSBUF Indexes of onsets in speech buffers */
/* VWIN Voicing window indices */
/* AWIN Analysis window indices */
/* EWIN Energy window indices */
/* VOIBUF Voicing decisions on windows in VWIN */
/* RMSBUF RMS energy */
/* RCBUF Reflection Coefficients */
/* Pitch is handled separately from the above parameters. */
/* The following variables deal with pitch: */
/* MIDX Encoded initial pitch estimate for analysis frame */
/* IPITCH Initial pitch computed for frame AF (decoded from MIDX) */
/* PITCH The encoded pitch value (index into TAU) for the present */
/* frame (delayed and smoothed by Dyptrack) */
/* Parameter adjustments */
if (speech) {
--speech;
}
if (voice) {
--voice;
}
if (rc) {
--rc;
}
/* Function Body */
/* Calculations are done on future frame due to requirements */
/* of the pitch tracker. Delay RMS and RC's 2 frames to give */
/* current frame parameters on return. */
/* Update all buffers */
inbuf = &(st->inbuf[0]);
pebuf = &(st->pebuf[0]);
lpbuf = &(st->lpbuf[0]);
ivbuf = &(st->ivbuf[0]);
bias = &(st->bias);
osbuf = &(st->osbuf[0]);
osptr = &(st->osptr);
obound = &(st->obound[0]);
vwin = &(st->vwin[0]);
awin = &(st->awin[0]);
voibuf = &(st->voibuf[0]);
rmsbuf = &(st->rmsbuf[0]);
rcbuf = &(st->rcbuf[0]);
zpre = &(st->zpre);
i__1 = 720 - contrl_1.lframe;
for (i__ = 181; i__ <= i__1; ++i__) {
inbuf[i__ - 181] = inbuf[contrl_1.lframe + i__ - 181];
pebuf[i__ - 181] = pebuf[contrl_1.lframe + i__ - 181];
}
i__1 = 540 - contrl_1.lframe;
for (i__ = 229; i__ <= i__1; ++i__) {
ivbuf[i__ - 229] = ivbuf[contrl_1.lframe + i__ - 229];
}
i__1 = 720 - contrl_1.lframe;
for (i__ = 25; i__ <= i__1; ++i__) {
lpbuf[i__ - 25] = lpbuf[contrl_1.lframe + i__ - 25];
}
j = 1;
i__1 = (*osptr) - 1;
for (i__ = 1; i__ <= i__1; ++i__) {
if (osbuf[i__ - 1] > contrl_1.lframe) {
osbuf[j - 1] = osbuf[i__ - 1] - contrl_1.lframe;
++j;
}
}
*osptr = j;
voibuf[0] = voibuf[2];
voibuf[1] = voibuf[3];
for (i__ = 1; i__ <= 2; ++i__) {
vwin[(i__ << 1) - 2] = vwin[((i__ + 1) << 1) - 2] - contrl_1.lframe;
vwin[(i__ << 1) - 1] = vwin[((i__ + 1) << 1) - 1] - contrl_1.lframe;
awin[(i__ << 1) - 2] = awin[((i__ + 1) << 1) - 2] - contrl_1.lframe;
awin[(i__ << 1) - 1] = awin[((i__ + 1) << 1) - 1] - contrl_1.lframe;
/* EWIN(*,J) is unused for J .NE. AF, so the following shift is
*/
/* unnecessary. It also causes error messages when the C versio
n */
/* of the code created from this by f2c is run with Purify. It
*/
/* correctly complains that uninitialized memory is being read.
*/
/* EWIN(1,I) = EWIN(1,I+1) - LFRAME */
/* EWIN(2,I) = EWIN(2,I+1) - LFRAME */
obound[i__ - 1] = obound[i__];
voibuf[i__ * 2] = voibuf[(i__ + 1) * 2];
voibuf[(i__ << 1) + 1] = voibuf[((i__ + 1) << 1) + 1];
rmsbuf[i__ - 1] = rmsbuf[i__];
i__1 = contrl_1.order;
for (j = 1; j <= i__1; ++j) {
rcbuf[j + i__ * 10 - 11] = rcbuf[j + (i__ + 1) * 10 - 11];
}
}
/* Copy input speech, scale to sign+12 bit integers */
/* Remove long term DC bias. */
/* If the average value in the frame was over 1/4096 (after current
*/
/* BIAS correction), then subtract that much more from samples in */
/* next frame. If the average value in the frame was under */
/* -1/4096, add 1/4096 more to samples in next frame. In all other
*/
/* cases, keep BIAS the same. */
temp = 0.f;
i__1 = contrl_1.lframe;
for (i__ = 1; i__ <= i__1; ++i__) {
inbuf[720 - contrl_1.lframe + i__ - 181] = speech[i__] * 4096.f -
(*bias);
temp += inbuf[720 - contrl_1.lframe + i__ - 181];
}
if (temp > (real) contrl_1.lframe) {
*bias += 1;
}
if (temp < (real) (-contrl_1.lframe)) {
*bias += -1;
}
/* Place Voicing Window */
i__ = 721 - contrl_1.lframe;
preemp_(&inbuf[i__ - 181], &pebuf[i__ - 181], &contrl_1.lframe, &precoef,
zpre);
onset_(pebuf, osbuf, osptr, &c__10, &c__181, &c__720, &contrl_1.lframe, st);
/* MAXOSP is just a debugging variable. */
/* MAXOSP = MAX( MAXOSP, OSPTR ) */
placev_(osbuf, osptr, &c__10, &obound[2], vwin, &c__3, &contrl_1.lframe,
&c__90, &c__156, &c__307, &c__462);
/* The Pitch Extraction algorithm estimates the pitch for a frame
*/
/* of speech by locating the minimum of the average magnitude difference
*/
/* function (AMDF). The AMDF operates on low-pass, inverse filtered */
/* speech. (The low-pass filter is an 800 Hz, 19 tap, equiripple, FIR
*/
/* filter and the inverse filter is a 2nd-order LPC filter.) The pitch
*/
/* estimate is later refined by dynamic programming (DYPTRK). However,
*/
/* since some of DYPTRK's parameters are a function of the voicing */
/* decisions, a voicing decision must precede the final pitch estimation.
*/
/* See subroutines LPFILT, IVFILT, and TBDM. */
/* LPFILT reads indices LBUFH-LFRAME-29 = 511 through LBUFH = 720 */
/* of INBUF, and writes indices LBUFH+1-LFRAME = 541 through LBUFH
*/
/* = 720 of LPBUF. */
lpfilt_(&inbuf[228], &lpbuf[384], &c__312, &contrl_1.lframe);
/* IVFILT reads indices (PWINH-LFRAME-7) = 353 through PWINH = 540
*/
/* of LPBUF, and writes indices (PWINH-LFRAME+1) = 361 through */
/* PWINH = 540 of IVBUF. */
ivfilt_(&lpbuf[204], ivbuf, &c__312, &contrl_1.lframe, ivrc);
/* TBDM reads indices PWINL = 229 through */
/* (PWINL-1)+MAXWIN+(TAU(LTAU)-TAU(1))/2 = 452 of IVBUF, and writes
*/
/* indices 1 through LTAU = 60 of AMDF. */
tbdm_(ivbuf, &c__156, tau, &c__60, amdf, &minptr, &maxptr, &mintau);
/* Voicing decisions are made for each half frame of input speech.
*/
/* An initial voicing classification is made for each half of the */
/* analysis frame, and the voicing decisions for the present frame */
/* are finalized. See subroutine VOICIN. */
/* The voicing detector (VOICIN) classifies the input signal as */
/* unvoiced (including silence) or voiced using the AMDF windowed */
/* maximum-to-minimum ratio, the zero crossing rate, energy measures, */
/* reflection coefficients, and prediction gains. */
/* The pitch and voicing rules apply smoothing and isolated */
/* corrections to the pitch and voicing estimates and, in the process,
*/
/* introduce two frames of delay into the corrected pitch estimates and
*/
/* voicing decisions. */
for (half = 1; half <= 2; ++half) {
voicin_(&vwin[4], inbuf, lpbuf, buflim, &half, &amdf[minptr - 1], &
amdf[maxptr - 1], &mintau, ivrc, obound, voibuf, &c__3, st);
}
/* Find the minimum cost pitch decision over several frames */
/* given the current voicing decision and the AMDF array */
dyptrk_(amdf, &c__60, &minptr, &voibuf[7], pitch, &midx, st);
ipitch = tau[midx - 1];
/* Place spectrum analysis and energy windows */
placea_(&ipitch, voibuf, &obound[2], &c__3, vwin, awin, ewin, &
contrl_1.lframe, &c__156);
/* Remove short term DC bias over the analysis window, Put result in ABUF
*/
lanal = awin[5] + 1 - awin[4];
dcbias_(&lanal, &pebuf[awin[4] - 181], abuf);
/* ABUF(1:LANAL) is now defined. It is equal to */
/* PEBUF(AWIN(1,AF):AWIN(2,AF)) corrected for short term DC bias. */
/* Compute RMS over integer number of pitch periods within the */
/* analysis window. */
/* Note that in a hardware implementation this computation may be */
/* simplified by using diagonal elements of PHI computed by MLOAD. */
i__1 = ewin[5] - ewin[4] + 1;
energy_(&i__1, &abuf[ewin[4] - awin[4]], &rmsbuf[2]);
/* Matrix load and invert, check RC's for stability */
mload_(&contrl_1.order, &c__1, &lanal, abuf, phi, psi);
invert_(&contrl_1.order, phi, psi, &rcbuf[20]);
rcchk_(&contrl_1.order, &rcbuf[10], &rcbuf[20]);
/* Set return parameters */
voice[1] = voibuf[2];
voice[2] = voibuf[3];
*rms = rmsbuf[0];
i__1 = contrl_1.order;
for (i__ = 1; i__ <= i__1; ++i__) {
rc[i__] = rcbuf[i__ - 1];
}
return 0;
} /* analys_ */
/*< SUBROUTINE ANALYS(SPEECH, VOICE, PITCH, RMS, RC) >*/
/* Subroutine */ int analys_0_(int n__, real *speech, integer *voice, integer
*pitch, real *rms, real *rc, integer *ptau)
{
/* Initialized data */
static integer tau[60] = { 20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,
35,36,37,38,39,40,42,44,46,48,50,52,54,56,58,60,62,64,66,68,70,72,
74,76,78,80,84,88,92,96,100,104,108,112,116,120,124,128,132,136,
140,144,148,152,156 };
static integer buflim[4] = { 181,720,25,720 };
static real precoef = .9375f;
static logical first = TRUE_;
/* System generated locals */
integer i__1;
/* Local variables */
real amdf[60];
integer half;
real abuf[156];
static real bias;
extern /* Subroutine */ int tbdm_(real *, integer *, integer *, integer *,
real *, integer *, integer *, integer *);
static integer awin[6] /* was [2][3] */;
integer midx, ewin[6] /* was [2][3] */;
real ivrc[2], temp;
static real zpre;
static integer vwin[6] /* was [2][3] */;
integer i__, j, lanal;
extern /* Subroutine */ int rcchk_(integer *, real *, real *), mload_(
integer *, integer *, integer *, real *, real *, real *);
static real pebuf[540], rcbuf[30] /* was [10][3] */, inbuf[540], lpbuf[
696], ivbuf[312];
static integer osbuf[10];
extern /* Subroutine */ int onset_(real *, integer *, integer *, integer *
, integer *, integer *, integer *);
static integer osptr;
extern /* Subroutine */ int initonset_(void), placea_(integer *, integer *
, integer *, integer *, integer *, integer *, integer *, integer *
, integer *), dcbias_(integer *, real *, real *), placev_(integer
*, integer *, integer *, integer *, integer *, integer *, integer
*, integer *, integer *, integer *, integer *);
integer ipitch;
static integer obound[3];
extern /* Subroutine */ int preemp_(real *, real *, integer *, real *,
real *), voicin_(integer *, real *, real *, integer *, integer *,
real *, real *, integer *, real *, integer *, integer *, integer *
);
static integer voibuf[8] /* was [2][4] */;
integer mintau;
static real rmsbuf[3];
extern /* Subroutine */ int lpfilt_(real *, real *, integer *, integer *),
ivfilt_(real *, real *, integer *, integer *, real *), energy_(
integer *, real *, real *), invert_(integer *, real *, real *,
real *);
integer minptr, maxptr;
extern /* Subroutine */ int dyptrk_(real *, integer *, integer *, integer
*, integer *, integer *), initvoicin_(void), initdyptrk_(void);
real phi[100] /* was [10][10] */, psi[10];
/*< INCLUDE 'config.fh' >*/
/*< INCLUDE 'contrl.fh' >*/
/* $Log: analys.c,v $
/* Revision 1.2 2001/01/25 23:45:49 jpoehlmann
/* Version 1.7c. Identical with files on the ftp Server ftp.franken.de.
/* (+ 1 patch in cli.c, wich is on the server too)
/* Not compiled now
/* */
/* Revision 1.3 1996/03/29 22:03:47 jaf */
/* Removed definitions for any constants that were no longer used. */
/* Revision 1.2 1996/03/26 19:34:33 jaf */
/* Added comments indicating which constants are not needed in an */
/* application that uses the LPC-10 coder. */
/* Revision 1.1 1996/02/07 14:43:51 jaf */
/* Initial revision */
/* LPC Configuration parameters: */
/* Frame size, Prediction order, Pitch period */
/*< parameter (MAXFRM = 180, MAXORD = 10, MAXPIT = 156) >*/
/*< REAL SPEECH(LFRAME) >*/
/* Arguments to ANALYS */
/* $Log: analys.c,v $
/* Revision 1.2 2001/01/25 23:45:49 jpoehlmann
/* Version 1.7c. Identical with files on the ftp Server ftp.franken.de.
/* (+ 1 patch in cli.c, wich is on the server too)
/* Not compiled now
/* */
/* Revision 1.3 1996/03/29 22:05:55 jaf */
/* Commented out the common block variables that are not needed by the */
/* embedded version. */
/* Revision 1.2 1996/03/26 19:34:50 jaf */
/* Added comments indicating which constants are not needed in an */
/* application that uses the LPC-10 coder. */
/* Revision 1.1 1996/02/07 14:44:09 jaf */
/* Initial revision */
/* LPC Processing control variables: */
/* *** Read-only: initialized in setup */
/* Files for Speech, Parameter, and Bitstream Input & Output, */
/* and message and debug outputs. */
/* Here are the only files which use these variables: */
/* lpcsim.f setup.f trans.f error.f vqsetup.f */
/* Many files which use fdebug are not listed, since it is only used in */
/* those other files conditionally, to print trace statements. */
/* integer fsi, fso, fpi, fpo, fbi, fbo, pbin, fmsg, fdebug */
/* LPC order, Frame size, Quantization rate, Bits per frame, */
/* Error correction */
/* Subroutine SETUP is the only place where order is assigned a value, */
/* and that value is 10. It could increase efficiency 1% or so to */
/* declare order as a constant (i.e., a Fortran PARAMETER) instead of as
*/
/* a variable in a COMMON block, since it is used in many places in the */
/* core of the coding and decoding routines. Actually, I take that back.
*/
/* At least when compiling with f2c, the upper bound of DO loops is */
/* stored in a local variable before the DO loop begins, and then that is
*/
/* compared against on each iteration. */
/* Similarly for lframe, which is given a value of MAXFRM in SETUP. */
/* Similarly for quant, which is given a value of 2400 in SETUP. quant */
/* is used in only a few places, and never in the core coding and */
/* decoding routines, so it could be eliminated entirely. */
/* nbits is similar to quant, and is given a value of 54 in SETUP. */
/* corrp is given a value of .TRUE. in SETUP, and is only used in the */
/* subroutines ENCODE and DECODE. It doesn't affect the speed of the */
/* coder significantly whether it is .TRUE. or .FALSE., or whether it is
*/
/* a constant or a variable, since it is only examined once per frame. */
/* Leaving it as a variable that is set to .TRUE. seems like a good */
/* idea, since it does enable some error-correction capability for */
/* unvoiced frames, with no change in the coding rate, and no noticeable
*/
/* quality difference in the decoded speech. */
/* integer quant, nbits */
/*< logical corrp >*/
/* *** Read/write: variables for debugging, not needed for LPC algorithm
*/
/* Current frame, Unstable frames, Output clip count, Max onset buffer,
*/
/* Debug listing detail level, Line count on listing page */
/* nframe is not needed for an embedded LPC10 at all. */
/* nunsfm is initialized to 0 in SETUP, and incremented in subroutine */
/* ERROR, which is only called from RCCHK. When LPC10 is embedded into */
/* an application, I would recommend removing the call to ERROR in RCCHK,
*/
/* and remove ERROR and nunsfm completely. */
/* iclip is initialized to 0 in SETUP, and incremented in entry SWRITE in
*/
/* sread.f. When LPC10 is embedded into an application, one might want */
/* to cause it to be incremented in a routine that takes the output of */
/* SYNTHS and sends it to an audio device. It could be optionally */
/* displayed, for those that might want to know what it is. */
/* maxosp is never initialized to 0 in SETUP, although it probably should
*/
/* be, and it is updated in subroutine ANALYS. I doubt that its value */
/* would be of much interest to an application in which LPC10 is */
/* embedded. */
/* listl and lincnt are not needed for an embedded LPC10 at all. */
/* integer nframe, nunsfm, iclip, maxosp, listl, lincnt */
/* common /contrl/ fsi, fso, fpi, fpo, fbi, fbo, pbin, fmsg, fdebug */
/*< common /contrl/ order, lframe >*/
/* common /contrl/ quant, nbits */
/*< common /contrl/ corrp >*/
/* common /contrl/ nframe, nunsfm, iclip, maxosp, listl, lincnt */
/*< INTEGER VOICE(2), PITCH >*/
/*< REAL RMS, RC(ORDER) >*/
/* Arguments to entry PITDEC (below) */
/*< INTEGER PTAU >*/
/* Parameters/constants */
/* Constants */
/* NF = Number of frames */
/* AF = Frame in which analysis is done */
/* OSLEN = Length of the onset buffer */
/* LTAU = Number of pitch lags */
/* SBUFL, SBUFH = Start and end index of speech buffers */
/* LBUFL, LBUFH = Start and end index of LPF speech buffer */
/* MINWIN, MAXWIN = Min and Max length of voicing (and analysis) windows
*/
/* PWLEN, PWINH, PWINL = Length, upper and lower limits of pitch window
*/
/* DVWINL, DVWINH = Default lower and upper limits of voicing window */
/*< INTEGER NF, AF, OSLEN, LTAU, SBUFL, SBUFH, LBUFL, LBUFH >*/
/*< INTEGER MINWIN, MAXWIN, PWLEN, PWINL, PWINH, DVWINL, DVWINH >*/
/*< PARAMETER (NF=4, AF=3, OSLEN=10, LTAU=60) >*/
/*< PARAMETER (SBUFL=(AF-2)*MAXFRM+1, SBUFH=NF*MAXFRM) >*/
/*< PARAMETER (LBUFL=(AF-2)*MAXFRM-MAXPIT+1, LBUFH=NF*MAXFRM) >*/
/*< PARAMETER (MINWIN=90, MAXWIN=156) >*/
/*< PARAMETER (PWLEN=MAXPIT+MAXWIN) >*/
/*< PARAMETER (PWINH=AF*MAXFRM, PWINL=PWINH-PWLEN+1) >*/
/*< PARAMETER (DVWINL=PWINH-PWLEN/2-MAXWIN/2+1) >*/
/*< PARAMETER (DVWINH=DVWINL+MAXWIN-1) >*/
/* The tables TAU and BUFLIM, and the variable PRECOEF, are not */
/* Fortran PARAMETER's, but they are initialized with DATA */
/* statements, and never modified. Thus, they need not have SAVE */
/* statements for them to keep their values from one invocation to
*/
/* the next. */
/*< INTEGER TAU(LTAU) >*/
/*< INTEGER BUFLIM(4) >*/
/*< REAL PRECOEF >*/
/* Local variables that need not be saved */
/*< INTEGER I, J, LANAL, HALF >*/
/*< INTEGER IPITCH, MINPTR, MAXPTR, MINTAU, MIDX >*/
/*< REAL IVRC(2), PHI(MAXORD,MAXORD), PSI(MAXORD) >*/
/*< REAL AMDF(LTAU), TEMP >*/
/*< INTEGER EWIN(2,AF) >*/
/*< REAL ABUF(MAXWIN) >*/
/* Local state */
/* Data Buffers */
/* INBUF Raw speech (with DC bias removed each frame) */
/* PEBUF Preemphasized speech */
/* LPBUF Low pass speech buffer */
/* IVBUF Inverse filtered speech */
/* OSBUF Indexes of onsets in speech buffers */
/* VWIN Voicing window indices */
/* AWIN Analysis window indices */
/* EWIN Energy window indices */
/* VOIBUF Voicing decisions on windows in VWIN */
/* RMSBUF RMS energy */
/* RCBUF Reflection Coefficients */
/* Pitch is handled separately from the above parameters. */
/* The following variables deal with pitch: */
/* MIDX Encoded initial pitch estimate for analysis frame */
/* IPITCH Initial pitch computed for frame AF (decoded from MIDX) */
/* PITCH The encoded pitch value (index into TAU) for the present */
/* frame (delayed and smoothed by Dyptrack) */
/*< LOGICAL FIRST >*/
/*< REAL INBUF(SBUFL:SBUFH), PEBUF(SBUFL:SBUFH) >*/
/*< REAL LPBUF(LBUFL:LBUFH), IVBUF(PWINL:PWINH) >*/
/*< REAL BIAS >*/
/*< INTEGER OSBUF(OSLEN), OSPTR, OBOUND(AF) >*/
/*< INTEGER VWIN(2,AF), AWIN(2,AF), VOIBUF(2,0:AF) >*/
/*< REAL RMSBUF(AF), RCBUF(MAXORD, AF) >*/
/*< REAL ZPRE >*/
/*< SAVE FIRST >*/
/*< SAVE INBUF, PEBUF >*/
/*< SAVE LPBUF, IVBUF >*/
/*< SAVE BIAS >*/
/*< SAVE OSBUF, OSPTR, OBOUND >*/
/*< SAVE VWIN, AWIN, VOIBUF >*/
/*< SAVE RMSBUF, RCBUF >*/
/*< SAVE ZPRE >*/
/*< D >*/
/* Parameter adjustments */
if (speech) {
--speech;
}
if (voice) {
--voice;
}
if (rc) {
--rc;
}
/* Function Body */
switch(n__) {
case 1: goto L_pitdec;
case 2: goto L_initanalys;
}
/*< DATA BUFLIM / SBUFL, SBUFH, LBUFL, LBUFH / >*/
/*< DATA PRECOEF /.9375/ >*/
/*< DATA FIRST /.TRUE./ >*/
/* IF(LISTL.GE.3) THEN */
/* WRITE(FDEBUG,900) NFRAME */
/* 900 FORMAT(1X,//,65(2H- ),//,' ANALYSIS DATA -- FRAME',I6/) */
/* END IF */
/* Calculations are done on future frame due to requirements */
/* of the pitch tracker. Delay RMS and RC's 2 frames to give */
/* current frame parameters on return. */
/* Update all buffers */
/*< IF (FIRST) THEN >*/
if (first) {
/*< CALL INITANALYS () >*/
initanalys_();
/*< FIRST = .FALSE. >*/
first = FALSE_;
/*< END IF >*/
}
/*< DO I = SBUFL, SBUFH-LFRAME >*/
i__1 = 720 - contrl_1.lframe;
for (i__ = 181; i__ <= i__1; ++i__) {
/*< INBUF(I) = INBUF(LFRAME+I) >*/
inbuf[i__ - 181] = inbuf[contrl_1.lframe + i__ - 181];
/*< PEBUF(I) = PEBUF(LFRAME+I) >*/
pebuf[i__ - 181] = pebuf[contrl_1.lframe + i__ - 181];
/*< END DO >*/
}
/*< DO I = PWINL,PWINH-LFRAME >*/
i__1 = 540 - contrl_1.lframe;
for (i__ = 229; i__ <= i__1; ++i__) {
/*< IVBUF(I) = IVBUF(LFRAME+I) >*/
ivbuf[i__ - 229] = ivbuf[contrl_1.lframe + i__ - 229];
/*< END DO >*/
}
/*< DO I = LBUFL,LBUFH-LFRAME >*/
i__1 = 720 - contrl_1.lframe;
for (i__ = 25; i__ <= i__1; ++i__) {
/*< LPBUF(I) = LPBUF(LFRAME+I) >*/
lpbuf[i__ - 25] = lpbuf[contrl_1.lframe + i__ - 25];
/*< END DO >*/
}
/*< J=1 >*/
j = 1;
/*< DO I = 1, OSPTR-1 >*/
i__1 = osptr - 1;
for (i__ = 1; i__ <= i__1; ++i__) {
/*< IF (OSBUF(I) .GT. LFRAME) THEN >*/
if (osbuf[i__ - 1] > contrl_1.lframe) {
/*< OSBUF(J)=OSBUF(I)-LFRAME >*/
osbuf[j - 1] = osbuf[i__ - 1] - contrl_1.lframe;
/*< J=J+1 >*/
++j;
/*< END IF >*/
}
/*< END DO >*/
}
/*< OSPTR=J >*/
osptr = j;
/*< VOIBUF(1,0) = VOIBUF(1,1) >*/
voibuf[0] = voibuf[2];
/*< VOIBUF(2,0) = VOIBUF(2,1) >*/
voibuf[1] = voibuf[3];
/*< DO I = 1, AF-1 >*/
for (i__ = 1; i__ <= 2; ++i__) {
/*< VWIN(1,I) = VWIN(1,I+1) - LFRAME >*/
vwin[(i__ << 1) - 2] = vwin[(i__ + 1 << 1) - 2] - contrl_1.lframe;
/*< VWIN(2,I) = VWIN(2,I+1) - LFRAME >*/
vwin[(i__ << 1) - 1] = vwin[(i__ + 1 << 1) - 1] - contrl_1.lframe;
/*< AWIN(1,I) = AWIN(1,I+1) - LFRAME >*/
awin[(i__ << 1) - 2] = awin[(i__ + 1 << 1) - 2] - contrl_1.lframe;
/*< AWIN(2,I) = AWIN(2,I+1) - LFRAME >*/
awin[(i__ << 1) - 1] = awin[(i__ + 1 << 1) - 1] - contrl_1.lframe;
/* EWIN(*,J) is unused for J .NE. AF, so the following shift is */
/* unnecessary. It also causes uninitialized memory to be read. */
/*< EWIN(1,I) = EWIN(1,I+1) - LFRAME >*/
/*< EWIN(2,I) = EWIN(2,I+1) - LFRAME >*/
/*< OBOUND(I) = OBOUND(I+1) >*/
obound[i__ - 1] = obound[i__];
/*< VOIBUF(1,I) = VOIBUF(1,I+1) >*/
voibuf[i__ * 2] = voibuf[(i__ + 1) * 2];
/*< VOIBUF(2,I) = VOIBUF(2,I+1) >*/
voibuf[(i__ << 1) + 1] = voibuf[(i__ + 1 << 1) + 1];
/*< RMSBUF(I) = RMSBUF(I+1) >*/
rmsbuf[i__ - 1] = rmsbuf[i__];
/*< DO J = 1, ORDER >*/
i__1 = contrl_1.order;
for (j = 1; j <= i__1; ++j) {
/*< RCBUF(J,I) = RCBUF(J,I+1) >*/
rcbuf[j + i__ * 10 - 11] = rcbuf[j + (i__ + 1) * 10 - 11];
/*< END DO >*/
}
/*< END DO >*/
}
/* Copy input speech, scale to sign+12 bit integers */
/* Remove long term DC bias. */
/* If the average value in the frame was over 1/4096 (after current
*/
/* BIAS correction), then subtract that much more from samples in */
/* next frame. If the average value in the frame was under */
/* -1/4096, add 1/4096 more to samples in next frame. In all other
*/
/* cases, keep BIAS the same. */
/*< TEMP = 0 >*/
temp = 0.f;
/*< DO I = 1,LFRAME >*/
i__1 = contrl_1.lframe;
for (i__ = 1; i__ <= i__1; ++i__) {
/*< INBUF(SBUFH-LFRAME+I) = SPEECH(I)*4096. - BIAS >*/
inbuf[720 - contrl_1.lframe + i__ - 181] = speech[i__] * 4096.f -
bias;
/*< TEMP = TEMP + INBUF(SBUFH-LFRAME+I) >*/
temp += inbuf[720 - contrl_1.lframe + i__ - 181];
/*< END DO >*/
}
/*< IF( TEMP.GT. LFRAME ) BIAS = BIAS + 1 >*/
if (temp > (real) contrl_1.lframe) {
bias += 1;
}
/*< IF( TEMP.LT.-LFRAME ) BIAS = BIAS - 1 >*/
if (temp < (real) (-contrl_1.lframe)) {
bias += -1;
}
/* Place Voicing Window */
/*< I = SBUFH + 1 - LFRAME >*/
i__ = 721 - contrl_1.lframe;
/*< CALL PREEMP(INBUF(I), PEBUF(I), LFRAME, PRECOEF, ZPRE) >*/
preemp_(&inbuf[i__ - 181], &pebuf[i__ - 181], &contrl_1.lframe, &precoef,
&zpre);
/*< C >*/
onset_(pebuf, osbuf, &osptr, &c__10, &c__181, &c__720, &contrl_1.lframe);
/* MAXOSP is just a debugging variable. */
/* MAXOSP = MAX( MAXOSP, OSPTR ) */
/*< C >*/
placev_(osbuf, &osptr, &c__10, &obound[2], vwin, &c__3, &contrl_1.lframe,
&c__90, &c__156, &c__307, &c__462);
/* The Pitch Extraction algorithm estimates the pitch for a frame
*/
/* of speech by locating the minimum of the average magnitude difference
*/
/* function (AMDF). The AMDF operates on low-pass, inverse filtered */
/* speech. (The low-pass filter is an 800 Hz, 19 tap, equiripple, FIR
*/
/* filter and the inverse filter is a 2nd-order LPC filter.) The pitch
*/
/* estimate is later refined by dynamic programming (DYPTRK). However,
*/
/* since some of DYPTRK's parameters are a function of the voicing */
/* decisions, a voicing decision must precede the final pitch estimation.
*/
/* See subroutines LPFILT, IVFILT, and TBDM. */
/* LPFILT reads indices LBUFH-LFRAME-29 = 511 through LBUFH = 720 */
/* of INBUF, and writes indices LBUFH+1-LFRAME = 541 through LBUFH
*/
/* = 720 of LPBUF. */
/*< C >*/
lpfilt_(&inbuf[228], &lpbuf[384], &c__312, &contrl_1.lframe);
/* IVFILT reads indices (PWINH-LFRAME-7) = 353 through PWINH = 540
*/
/* of LPBUF, and writes indices (PWINH-LFRAME+1) = 361 through */
/* PWINH = 540 of IVBUF. */
/*< CALL IVFILT( LPBUF(PWINL), IVBUF(PWINL), PWLEN, LFRAME, IVRC ) >*/
ivfilt_(&lpbuf[204], ivbuf, &c__312, &contrl_1.lframe, ivrc);
/* TBDM reads indices PWINL = 229 through */
/* (PWINL-1)+MAXWIN+(TAU(LTAU)-TAU(1))/2 = 452 of IVBUF, and writes
*/
/* indices 1 through LTAU = 60 of AMDF. */
/*< C >*/
tbdm_(ivbuf, &c__156, tau, &c__60, amdf, &minptr, &maxptr, &mintau);
/* Voicing decisions are made for each half frame of input speech.
*/
/* An initial voicing classification is made for each half of the */
/* analysis frame, and the voicing decisions for the present frame */
/* are finalized. See subroutine VOICIN. */
/* The voicing detector (VOICIN) classifies the input signal as */
/* unvoiced (including silence) or voiced using the AMDF windowed */
/* maximum-to-minimum ratio, the zero crossing rate, energy measures, */
/* reflection coefficients, and prediction gains. */
/* The pitch and voicing rules apply smoothing and isolated */
/* corrections to the pitch and voicing estimates and, in the process,
*/
/* introduce two frames of delay into the corrected pitch estimates and
*/
/* voicing decisions. */
/*< DO HALF = 1,2 >*/
for (half = 1; half <= 2; ++half) {
/*< >*/
voicin_(&vwin[4], inbuf, lpbuf, buflim, &half, &amdf[minptr - 1], &
amdf[maxptr - 1], &mintau, ivrc, obound, voibuf, &c__3);
/*< END DO >*/
}
/* Find the minimum cost pitch decision over several frames */
/* given the current voicing decision and the AMDF array */
/*< CALL DYPTRK( AMDF, LTAU, MINPTR, VOIBUF(2,AF), PITCH, MIDX ) >*/
dyptrk_(amdf, &c__60, &minptr, &voibuf[7], pitch, &midx);
/*< IPITCH = TAU(MIDX) >*/
ipitch = tau[midx - 1];
/* Place spectrum analysis and energy windows */
/*< C >*/
placea_(&ipitch, voibuf, &obound[2], &c__3, vwin, awin, ewin, &
contrl_1.lframe, &c__156);
/* Remove short term DC bias over the analysis window, Put result in ABUF
*/
/*< LANAL = AWIN(2,AF) + 1 - AWIN(1,AF) >*/
lanal = awin[5] + 1 - awin[4];
/*< CALL DCBIAS( LANAL, PEBUF(AWIN(1,AF)), ABUF ) >*/
dcbias_(&lanal, &pebuf[awin[4] - 181], abuf);
/* ABUF(1:LANAL) is now defined. It is equal to */
/* PEBUF(AWIN(1,AF):AWIN(2,AF)) corrected for short term DC bias. */
/* IF ((AWIN(1,AF) .LT. SBUFL) .OR. (SBUFH .LT. AWIN(2,AF))) THEN */
/* WRITE (2,999) AWIN(1,AF), AWIN(2,AF), SBUFL, SBUFH */
/* 999 FORMAT(1X,'AWIN (',I4,':',I4, */
/* 1 ') goes outside of PEBUFs range (',I4,':',I4,')') */
/* STOP */
/* END IF */
/* IF (MAXWIN .LT. LANAL) THEN */
/* WRITE (2,998) LANAL, MAXWIN */
/* 998 FORMAT(1X,'LANAL (',I4, */
/* 1 ') goes outside of ABUFs range (1:',I4,')') */
/* STOP */
/* END IF */
/* Compute RMS over integer number of pitch periods within the */
/* analysis window. */
/* Note that in a hardware implementation this computation may be */
/* simplified by using diagonal elements of PHI computed by MLOAD. */
/* IF ( (EWIN(1,AF) .LT. AWIN(1,AF)) */
/* 1 .OR. (AWIN(2,AF) .LT. EWIN(2,AF))) THEN */
/* WRITE (2,997) EWIN(1,AF), EWIN(2,AF), AWIN(1,AF), AWIN(2,AF) */
/* 997 FORMAT(1X,'EWIN (',I4,':',I4, */
/* 1 ') goes outside of AWINs range (',I4,':',I4,')') */
/* STOP */
/* END IF */
/*< C >*/
i__1 = ewin[5] - ewin[4] + 1;
energy_(&i__1, &abuf[ewin[4] - awin[4]], &rmsbuf[2]);
/* Matrix load and invert, check RC's for stability */
/* IF (LANAL .LT. ORDER) THEN */
/* WRITE (2,996) LANAL, ORDER */
/* 996 FORMAT(1X,'MLOAD will read outside of ABUFs defined range ', */
/* 1 'of (1:LANAL=',I4,') because LANAL is less than', */
/* 1 ' ORDER=',I4) */
/* STOP */
/* END IF */
/*< CALL MLOAD( ORDER, 1, LANAL, ABUF, PHI, PSI ) >*/
mload_(&contrl_1.order, &c__1, &lanal, abuf, phi, psi);
/*< CALL INVERT( ORDER, PHI, PSI, RCBUF(1,AF) ) >*/
invert_(&contrl_1.order, phi, psi, &rcbuf[20]);
/*< CALL RCCHK( ORDER, RCBUF(1,AF-1), RCBUF(1,AF) ) >*/
rcchk_(&contrl_1.order, &rcbuf[10], &rcbuf[20]);
/* Set return parameters */
/*< VOICE(1) = VOIBUF(1,AF-2) >*/
voice[1] = voibuf[2];
/*< VOICE(2) = VOIBUF(2,AF-2) >*/
voice[2] = voibuf[3];
/*< RMS = RMSBUF(AF-2) >*/
*rms = rmsbuf[0];
/*< DO I = 1,ORDER >*/
i__1 = contrl_1.order;
for (i__ = 1; i__ <= i__1; ++i__) {
/*< RC(I) = RCBUF(I,AF-2) >*/
rc[i__] = rcbuf[i__ - 1];
/*< END DO >*/
}
/* Print out test data */
/* IF(LISTL.GE.3) THEN */
/* IF(LISTL.GE.4) THEN */
/* IF(LISTL.GE.6) THEN */
/* WRITE(FDEBUG,980) 'INBUF:',INBUF */
/* WRITE(FDEBUG,980) 'LPBUF:',LPBUF */
/* WRITE(FDEBUG,980) 'IVBUF:',IVBUF */
/* WRITE(FDEBUG,980) 'PEBUF:',PEBUF */
/* END IF */
/* WRITE(FDEBUG,980) 'AMDF:',AMDF */
/* END IF */
/* IF(OSPTR.GT.1) WRITE(FDEBUG,970) */
/* 1 'OSBUF Onset Locations:', (OSBUF(I),I=1,OSPTR-1) */
/* IF(LISTL.GE.4) THEN */
/* WRITE(FDEBUG,980) 'PHI Matrix Values:', */
/* 1 ((PHI(I,J),J=1,ORDER),I=1,ORDER) */
/* WRITE(FDEBUG,980) 'PSI Vector Values:',PSI */
/* 970 FORMAT(1X,A,100(/1X,20I6)) */
/* 980 FORMAT(1X,A,100(/1X,10F12.1)) */
/* END IF */
/* WRITE(FDEBUG,990) */
/* 990 FORMAT(' FRAME AWIN EWIN BIAS',T34, */
/* 1 'V/UV Pitch RMS',T54, */
/* 1 'RC1 RC2 RC3 RC4 RC5 ', */
/* 1 'RC6 RC7 RC8 RC9 RC10') */
/* WRITE(FDEBUG,992) NFRAME, AWIN(1,AF), AWIN(2,AF), */
/* 1 EWIN(1,AF), EWIN(2,AF), BIAS, */
/* 1 VOIBUF(2,AF), IPITCH, RMSBUF(AF), (RCBUF(I,AF),I=1,ORDER) */
/* 992 FORMAT(1X,I6,2I4,1X,2I4,F6.1,T34,I2,I8,F6.0,T50,10F8.3) */
/* END IF */
/*< RETURN >*/
return 0;
/* ******************************************************************* */
/* Decode pitch index (PITCH) to pitch period (PTAU) */
/* ******************************************************************* */
/*< ENTRY PITDEC( PITCH, PTAU ) >*/
L_pitdec:
/*< IF (PITCH .GE. 1 .AND. PITCH .LE. LTAU) THEN >*/
if (*pitch >= 1 && *pitch <= 60) {
/*< PTAU = TAU(PITCH) >*/
*ptau = tau[*pitch - 1];
/*< ELSE >*/
} else {
/*< PTAU = 0 >*/
*ptau = 0;
/*< END IF >*/
}
/*< RETURN >*/
return 0;
/*< ENTRY INITANALYS () >*/
L_initanalys:
/* Set FIRST to .FALSE., so that just in case someone calls */
/* INITANALYS before calling ANALYS for the first time, then this */
/* entry will not be called by ANALYS itself. */
/*< FIRST = .FALSE. >*/
first = FALSE_;
/* Initialize local state in all subroutines that have local state.
*/
/*< CALL INITONSET () >*/
initonset_();
/*< CALL INITVOICIN () >*/
initvoicin_();
/*< CALL INITDYPTRK () >*/
initdyptrk_();
/* INBUF, PEBUF, LPBUF, and IVBUF were not initialized in the */
/* original code. Initial values of 0 appear to be safe. */
/*< DO I = SBUFL,SBUFH >*/
for (i__ = 181; i__ <= 720; ++i__) {
/*< INBUF(I) = 0. >*/
inbuf[i__ - 181] = 0.f;
/*< PEBUF(I) = 0. >*/
pebuf[i__ - 181] = 0.f;
/*< END DO >*/
}
/*< DO I = LBUFL,LBUFH >*/
for (i__ = 25; i__ <= 720; ++i__) {
/*< LPBUF(I) = 0. >*/
lpbuf[i__ - 25] = 0.f;
/*< END DO >*/
}
/*< DO I = PWINL,PWINH >*/
for (i__ = 229; i__ <= 540; ++i__) {
/*< IVBUF(I) = 0. >*/
ivbuf[i__ - 229] = 0.f;
/*< END DO >*/
}
/*< BIAS = 0 >*/
bias = 0.f;
/* Although OSBUF is saved from one invocation to the next, it need
*/
/* not have an initial defined value, because OSPTR is initialized
*/
/* to 1, and only entries 1 through OSPTR-1 may be read without */
/* writing them first. */
/*< OSPTR = 1 >*/
osptr = 1;
/*< DO I = 1,AF >*/
for (i__ = 1; i__ <= 3; ++i__) {
/*< OBOUND(I) = 0 >*/
obound[i__ - 1] = 0;
/*< END DO >*/
}
/* Should other indices of VWIN and AWIN be initialized, or is this
*/
/* unnecessary? If unnecessary, why? */
/*< VWIN(1,AF) = DVWINL >*/
vwin[4] = 307;
/*< VWIN(2,AF) = DVWINH >*/
vwin[5] = 462;
/*< AWIN(1,AF) = DVWINL >*/
awin[4] = 307;
/*< AWIN(2,AF) = DVWINH >*/
awin[5] = 462;
/* VOIBUF was not initialized in the original code. I believe */
/* initializing it to all 0's is a safe decision, given that its */
/* contents are always 0/1 truth values representing the decision */
/* of whether a half-frame was voiced or not. */
/*< DO I = 1,2 >*/
for (i__ = 1; i__ <= 2; ++i__) {
/*< DO J = 0,AF >*/
for (j = 0; j <= 3; ++j) {
/*< VOIBUF(I,J) = 0 >*/
voibuf[i__ + (j << 1) - 1] = 0;
/*< END DO >*/
}
/*< END DO >*/
}
/* RMSBUF and RCBUF were also not initialized in the original code.
*/
/* Again, initial values of 0 appear to be safe. */
/*< DO I = 1,AF >*/
for (i__ = 1; i__ <= 3; ++i__) {
/*< RMSBUF(I) = 0. >*/
rmsbuf[i__ - 1] = 0.f;
/*< DO J = 1,ORDER >*/
i__1 = contrl_1.order;
for (j = 1; j <= i__1; ++j) {
/*< RCBUF(J,I) = 0. >*/
rcbuf[j + i__ * 10 - 11] = 0.f;
/*< END DO >*/
}
/*< END DO >*/
}
/*< ZPRE = 0. >*/
zpre = 0.f;
/*< RETURN >*/
return 0;
/*< END >*/
} /* analys_ */
