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SSB demod: fixed AGC constants audio sample rate dependency

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This commit is contained in:
f4exb 2018-03-30 02:07:03 +02:00
parent c3f3d2391d
commit 10fe136b5e
1 changed files with 21 additions and 2 deletions
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23
plugins/channelrx/demodssb/ssbdemod.cpp
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@ -387,11 +387,30 @@ void SSBDemod::applyAudioSampleRate(int sampleRate)
m_inputMessageQueue.push(channelConfigMsg);
m_settingsMutex.lock();
m_interpolator.create(16, m_inputSampleRate, m_Bandwidth * 1.5f, 2.0f);
m_interpolatorDistanceRemain = 0;
m_interpolatorDistance = (Real) m_inputSampleRate / (Real) sampleRate;
SSBFilter->create_filter(m_LowCutoff / (float) sampleRate, m_Bandwidth / (float) sampleRate);
DSBFilter->create_dsb_filter((2.0f * m_Bandwidth) / (float) sampleRate);
int agcNbSamples = (sampleRate / 1000) * (1<<m_settings.m_agcTimeLog2);
int agcThresholdGate = (sampleRate / 1000) * m_settings.m_agcThresholdGate; // ms
if (m_agcNbSamples != agcNbSamples)
{
m_agc.resize(agcNbSamples, agcTarget);
m_agc.setStepDownDelay(agcNbSamples);
m_agcNbSamples = agcNbSamples;
}
if (m_agcThresholdGate != agcThresholdGate)
{
m_agc.setGate(agcThresholdGate);
m_agcThresholdGate = agcThresholdGate;
}
m_settingsMutex.unlock();
m_audioSampleRate = sampleRate;
@ -468,10 +487,10 @@ void SSBDemod::applySettings(const SSBDemodSettings& settings, bool force)
(m_settings.m_agcThresholdGate != settings.m_agcThresholdGate) ||
(m_settings.m_agcClamping != settings.m_agcClamping) || force)
{
int agcNbSamples = 48 * (1<<settings.m_agcTimeLog2);
int agcNbSamples = (m_audioSampleRate / 1000) * (1<<settings.m_agcTimeLog2);
m_agc.setThresholdEnable(settings.m_agcPowerThreshold != -SSBDemodSettings::m_minPowerThresholdDB);
double agcPowerThreshold = CalcDb::powerFromdB(settings.m_agcPowerThreshold) * (SDR_RX_SCALED*SDR_RX_SCALED);
int agcThresholdGate = 48 * settings.m_agcThresholdGate; // ms
int agcThresholdGate = (m_audioSampleRate / 1000) * settings.m_agcThresholdGate; // ms
bool agcClamping = settings.m_agcClamping;
if (m_agcNbSamples != agcNbSamples)