C++ (Cpp) ampmodem_reset示例

示例#1

文件： ampmodem.c 项目： 0xLeo/liquid-dsp

// create ampmodem object
//  _m                  :   modulation index
//  _fc                 :   carrier frequency
//  _type               :   AM type (e.g. LIQUID_AMPMODEM_DSB)
//  _suppressed_carrier :   carrier suppression flag
ampmodem ampmodem_create(float _m,
                         float _fc,
                         liquid_ampmodem_type _type,
                         int _suppressed_carrier)
{
    ampmodem q = (ampmodem) malloc(sizeof(struct ampmodem_s));
    q->type = _type;
    q->m    = _m;
    q->fc   = _fc;
    q->suppressed_carrier = (_suppressed_carrier == 0) ? 0 : 1;

    // create nco, pll objects
    q->oscillator = nco_crcf_create(LIQUID_NCO);
    nco_crcf_set_frequency(q->oscillator, 2*M_PI*q->fc);
    
    nco_crcf_pll_set_bandwidth(q->oscillator,0.05f);

    // suppressed carrier
    q->ssb_alpha = 0.01f;
    q->ssb_q_hat = 0.0f;

    // single side-band
    q->hilbert = firhilbf_create(9, 60.0f);

    // double side-band

    ampmodem_reset(q);

    // debugging
#if DEBUG_AMPMODEM
    q->debug_x =           windowcf_create(DEBUG_AMPMODEM_BUFFER_LEN);
    q->debug_phase_error =  windowf_create(DEBUG_AMPMODEM_BUFFER_LEN);
    q->debug_freq_error =   windowf_create(DEBUG_AMPMODEM_BUFFER_LEN);
#endif

    return q;
}

示例#2

文件： amdemod.cpp 项目： jcqvisser/Automatic-Modulation-Classification

void AmDemod::reset()
{
    ampmodem_reset(_demod);
}