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Crash fixes, apply FIR filter to stereo output

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Charles J. Cliffe
2014-12-27 15:04:43 -05:00
parent 5e9414702d
commit a93deee564
8 changed files with 53 additions and 70 deletions
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src/demod/DemodulatorWorkerThread.cpp
-18
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@@ -37,26 +37,8 @@ void DemodulatorWorkerThread::threadMain() {
result.resample_ratio = (float) (filterCommand.bandwidth) / (float) filterCommand.inputRate;
result.audio_resample_ratio = (float) (filterCommand.audioSampleRate) / (float) filterCommand.bandwidth;
float fc = 0.5 * ((double) filterCommand.bandwidth / (double) filterCommand.inputRate); // filter cutoff frequency
if (fc <= 0) {
fc = 0;
}
if (fc >= 0.5) {
fc = 0.5;
}
float ft = 0.05f; // filter transition
float As = 60.0f; // stop-band attenuation [dB]
float mu = 0.0f; // fractional timing offset
// estimate required filter length and generate filter
unsigned int h_len = estimate_req_filter_len(ft, As);
float h[h_len];
liquid_firdes_kaiser(h_len, fc, As, mu, h);
result.fir_filter = firfilt_crcf_create(h, h_len);
result.resampler = msresamp_crcf_create(result.resample_ratio, As);
result.audio_resampler = msresamp_rrrf_create(result.audio_resample_ratio, As);
result.stereo_resampler = msresamp_rrrf_create(result.audio_resample_ratio, As);