316   if (!effp->in_signal.channels)  in getopts()
317     effp->in_signal.channels = p->getopts_nchannels;  in getopts()
332     if (lsx_parsesamples(effp->in_signal.rate, p->length_str, &p->samples_to_do, 't') == NULL)  in start()
335     p->samples_to_do = effp->in_signal.length != SOX_UNKNOWN_LEN ?  in start()
336         effp->in_signal.length / effp->in_signal.channels : 0;  in start()
338   p->number_of_channels = effp->in_signal.channels;  in start()
351       d = (d * cos(2 * M_PI * decay_f / effp->in_signal.rate) - 1) / (d - 1);  in start()
356       if (effp->in_signal.rate < 44100 || effp->in_signal.rate > 48000) {  in start()
362       chan->c1 *= exp(-2e4/ (.05+chan->p1)/ chan->freq/ effp->in_signal.rate);  in start()
365       chan->c2 = exp(-2 * M_PI * 10 / effp->in_signal.rate);  in start()
370       chan->buffer_len = effp->in_signal.rate / chan->freq - d;  in start()
371       frac = effp->in_signal.rate / chan->freq - d - chan->buffer_len;  in start()
413           log(chan->c0)/ -2 / M_PI * effp->in_signal.rate,  in start()
426           log(chan->freq2 / chan->freq) / p->samples_to_do * effp->in_signal.rate : 1;  in start()
447 #define elapsed_time_s p->samples_done / effp->in_signal.rate
453   unsigned len = min(*isamp, *osamp) / effp->in_signal.channels;  in flow()
458     for (c = 0; c < effp->in_signal.channels; c++) {  in flow()
640   *isamp = *osamp = done * effp->in_signal.channels;  in flow()