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Add FM network audio gain and optional pre- and de-emphasis.

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This commit is contained in:
Jonathan Naylor
2021-03-14 14:59:34 +00:00
parent fb0d1ef5e2
commit 75e8e95aad
8 changed files with 147 additions and 74 deletions
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12
FMControl.h
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@@ -1,5 +1,5 @@
/*
* Copyright (C) 2020 by Jonathan Naylor G4KLX
* Copyright (C) 2020,2021 by Jonathan Naylor G4KLX
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
@@ -30,7 +30,7 @@
class CFMControl {
public:
CFMControl(CFMNetwork* network);
CFMControl(CFMNetwork* network, float txAudioGain, float rxAudioGain, bool preEmphasisOn, bool deEmphasisOn);
~CFMControl();
bool writeModem(const unsigned char* data, unsigned int length);
@@ -43,10 +43,14 @@ public:
private:
CFMNetwork* m_network;
float m_txAudioGain;
float m_rxAudioGain;
bool m_preEmphasisOn;
bool m_deEmphasisOn;
bool m_enabled;
CRingBuffer<unsigned char> m_incomingRFAudio;
CIIRDirectForm1Filter* m_preemphasis;
CIIRDirectForm1Filter* m_deemphasis;
CIIRDirectForm1Filter* m_preEmphasis;
CIIRDirectForm1Filter* m_deEmphasis;
CIIRDirectForm1Filter* m_filterStage1;
CIIRDirectForm1Filter* m_filterStage2;
CIIRDirectForm1Filter* m_filterStage3;