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AM demod: eliminate DC from demodulated output. Set volume AGC length to 50ms

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This commit is contained in:
f4exb 2017-08-20 00:56:50 +02:00
parent 79f53275de
commit 1d32eb0217
3 changed files with 3 additions and 3 deletions
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2
plugins/channelrx/demodam/amdemod.cpp
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@ -33,7 +33,7 @@ AMDemod::AMDemod() :
m_magsqPeak(0.0f), m_magsqPeak(0.0f),
m_magsqCount(0), m_magsqCount(0),
m_movingAverage(40, 0), m_movingAverage(40, 0),
m_volumeAGC(4800, 1.0), m_volumeAGC(2400, 1.0),
m_audioFifo(4, 48000), m_audioFifo(4, 48000),
m_settingsMutex(QMutex::Recursive) m_settingsMutex(QMutex::Recursive)
{ {

2
plugins/channelrx/demodam/amdemod.h
View File

@ -188,7 +188,7 @@ private:
{ {
Real demod = sqrt(magsq); Real demod = sqrt(magsq);
m_volumeAGC.feed(demod); m_volumeAGC.feed(demod);
demod /= m_volumeAGC.getValue(); demod = (demod - m_volumeAGC.getValue()) / m_volumeAGC.getValue();
if (m_running.m_bandpassEnable) if (m_running.m_bandpassEnable)
{ {

2
plugins/channelrx/demodam/amdemodplugin.cpp
View File

@ -7,7 +7,7 @@
const PluginDescriptor AMDemodPlugin::m_pluginDescriptor = { const PluginDescriptor AMDemodPlugin::m_pluginDescriptor = {
QString("AM Demodulator"), QString("AM Demodulator"),
QString("3.5.0"), QString("3.6.0"),
QString("(c) Edouard Griffiths, F4EXB"), QString("(c) Edouard Griffiths, F4EXB"),
QString("https://github.com/f4exb/sdrangel"), QString("https://github.com/f4exb/sdrangel"),
true, true,