Audio modulators: reduce audio input file buffer to 0.1s

debian/changelog

@@ -1,6 +1,7 @@
 sdrangel (3.5.5-1) unstable; urgency=medium
 
-  * Output plugins: use fixed time length for sample FIFO
+  * Output plugins: use fixed time length for sample FIFO of ~0.25s
+  * Audio modulators: reduce audio input file buffer to 0.1s
 
  -- Edouard Griffiths, F4EXB <f4exb06@gmail.com>  Sun, 13 Aug 2017 23:14:18 +0200
 

plugins/channeltx/modam/ammod.cpp

@@ -38,7 +38,7 @@ const int AMMod::m_levelNbSamples = 480; // every 10ms
 AMMod::AMMod() :
     m_movingAverage(40, 0),
     m_volumeAGC(40, 0),
-    m_audioFifo(4, 48000),
+    m_audioFifo(4, 4800),
 	m_settingsMutex(QMutex::Recursive),
 	m_fileSize(0),
 	m_recordLength(0),

plugins/channeltx/modnfm/nfmmod.cpp

@@ -39,7 +39,7 @@ NFMMod::NFMMod() :
 	m_modPhasor(0.0f),
     m_movingAverage(40, 0),
     m_volumeAGC(40, 0),
-    m_audioFifo(4, 48000),
+    m_audioFifo(4, 4800),
 	m_settingsMutex(QMutex::Recursive),
 	m_fileSize(0),
 	m_recordLength(0),

plugins/channeltx/modssb/ssbmod.cpp

@@ -46,7 +46,7 @@ SSBMod::SSBMod(BasebandSampleSink* sampleSink) :
 	m_DSBFilterBufferIndex(0),
     m_sampleSink(sampleSink),
     m_movingAverage(40, 0),
-    m_audioFifo(4, 48000),
+    m_audioFifo(4, 4800),
 	m_settingsMutex(QMutex::Recursive),
 	m_fileSize(0),
 	m_recordLength(0),

plugins/channeltx/modwfm/wfmmod.cpp

@@ -40,7 +40,7 @@ WFMMod::WFMMod() :
 	m_modPhasor(0.0f),
     m_movingAverage(40, 0),
     m_volumeAGC(40, 0),
-    m_audioFifo(4, 48000),
+    m_audioFifo(4, 4800),
 	m_settingsMutex(QMutex::Recursive),
     m_fileSize(0),
 	m_recordLength(0),