/* NLSF stabilizer, over multiple input column data vectors */
void SKP_Silk_NLSF_stabilize_multi(
SKP_int *NLSF_Q15, /* I/O: Unstable/stabilized normalized LSF vectors in Q15 [LxN] */
const SKP_int *NDeltaMin_Q15, /* I: Normalized delta min vector in Q15, NDeltaMin_Q15[L] must be >= 1 [L+1] */
const SKP_int N, /* I: Number of input vectors to be stabilized */
const SKP_int L /* I: NLSF vector dimension */
)
{
SKP_int n;
/* loop over input data */
for( n = 0; n < N; n++ ) {
SKP_Silk_NLSF_stabilize( &NLSF_Q15[n * L], NDeltaMin_Q15, L );
}
}
/* LSF stabilizer, for a single input data vector */
void SKP_Silk_NLSF_stabilize_FLP(
SKP_float *pNLSF, /* I/O (Un)stable NLSF vector [ LPC_order ] */
const SKP_float *pNDelta_min, /* I Normalized delta min vector[LPC_order+1]*/
const SKP_int LPC_order /* I LPC order */
)
{
SKP_int i;
SKP_int NLSF_Q15[ MAX_LPC_ORDER ], ndelta_min_Q15[ MAX_LPC_ORDER + 1 ];
for( i = 0; i < LPC_order; i++ ) {
NLSF_Q15[ i ] = ( SKP_int )SKP_float2int( pNLSF[ i ] * 32768.0f );
ndelta_min_Q15[ i ] = ( SKP_int )SKP_float2int( pNDelta_min[ i ] * 32768.0f );
}
ndelta_min_Q15[ LPC_order ] = ( SKP_int )SKP_float2int( pNDelta_min[ LPC_order ] * 32768.0f );
/* NLSF stabilizer, for a single input data vector */
SKP_Silk_NLSF_stabilize( NLSF_Q15, ndelta_min_Q15, LPC_order );
for( i = 0; i < LPC_order; i++ ) {
pNLSF[ i ] = ( SKP_float )NLSF_Q15[ i ] * ( 1.0f / 32768.0f );
}
}
