williamp/osmocom-analog
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Rename filter -> iir_filter (file name and instance name)

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This is useful when using fir_filter in the future.
This commit is contained in:
Andreas Eversberg
2017-05-13 16:04:00 +02:00
parent d03443c4f1
commit ca10048e5c
21 changed files with 200 additions and 164 deletions
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6
src/cnetz/dsp.c
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@@ -123,7 +123,7 @@ int dsp_init_sender(cnetz_t *cnetz, int measure_speed, double clock_speed[2])
dsp_init_ramp(cnetz);
/* init low pass filter for received signal */
filter_lowpass_init(&cnetz->lp, MAX_MODULATION, cnetz->sender.samplerate, 2);
iir_lowpass_init(&cnetz->lp, MAX_MODULATION, cnetz->sender.samplerate, 2);
/* create speech buffer */
cnetz->dsp_speech_buffer = calloc(sizeof(sample_t), cnetz->sender.samplerate); /* buffer is greater than sr/1.1, just to be secure */
@@ -134,7 +134,7 @@ int dsp_init_sender(cnetz_t *cnetz, int measure_speed, double clock_speed[2])
}
/* reinit the sample rate to shrink/expand audio */
init_samplerate(&cnetz->sender.srstate, 0x8000, (double)cnetz->sender.samplerate / 1.1); /* 66 <-> 60 */
init_samplerate(&cnetz->sender.srstate, 8000.0, (double)cnetz->sender.samplerate / 1.1, 3300.0); /* 66 <-> 60 */
rc = fsk_fm_init(&cnetz->fsk_demod, cnetz, cnetz->sender.samplerate, (double)BITRATE / (1.0 + clock_speed[0] / 1000000.0));
if (rc < 0)
@@ -584,7 +584,7 @@ void sender_receive(sender_t *sender, sample_t *samples, int length)
#endif
if (cnetz->dsp_mode != DSP_MODE_OFF) {
filter_process(&cnetz->lp, samples, length);
iir_process(&cnetz->lp, samples, length);
fsk_fm_demod(&cnetz->fsk_demod, samples, length);
}
return;