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NFM demod: added adjustable squelch gate time (AGC attack) to adjust the length of transient elimination from default 50ms
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f4exb
parent
ce20f21b08
commit
68ed0013ea
@ -48,6 +48,7 @@ NFMDemod::NFMDemod() :
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m_config.m_inputFrequencyOffset = 0;
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m_config.m_rfBandwidth = 12500;
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m_config.m_afBandwidth = 3000;
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m_config.m_squelchGate = 5; // 10s of ms at 48000 Hz sample rate. Corresponds to 2400 for AGC attack
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m_config.m_squelch = -30.0;
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m_config.m_volume = 1.0;
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m_config.m_ctcssOn = false;
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@ -78,6 +79,7 @@ void NFMDemod::configure(MessageQueue* messageQueue,
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Real rfBandwidth,
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Real afBandwidth,
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Real volume,
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int squelchGate,
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Real squelch,
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bool ctcssOn,
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bool audioMute)
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@ -85,6 +87,7 @@ void NFMDemod::configure(MessageQueue* messageQueue,
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Message* cmd = MsgConfigureNFMDemod::create(rfBandwidth,
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afBandwidth,
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volume,
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squelchGate,
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squelch,
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ctcssOn,
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audioMute);
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@ -295,6 +298,7 @@ bool NFMDemod::handleMessage(const Message& cmd)
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m_config.m_rfBandwidth = cfg.getRFBandwidth();
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m_config.m_afBandwidth = cfg.getAFBandwidth();
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m_config.m_volume = cfg.getVolume();
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m_config.m_squelchGate = cfg.getSquelchGate();
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m_config.m_squelch = cfg.getSquelch();
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m_config.m_ctcssOn = cfg.getCtcssOn();
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m_config.m_audioMute = cfg.getAudioMute();
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@ -304,6 +308,7 @@ bool NFMDemod::handleMessage(const Message& cmd)
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qDebug() << "NFMDemod::handleMessage: MsgConfigureNFMDemod: m_rfBandwidth: " << m_config.m_rfBandwidth
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<< " m_afBandwidth: " << m_config.m_afBandwidth
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<< " m_volume: " << m_config.m_volume
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<< " m_squelchGate" << m_config.m_squelchGate
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<< " m_squelch: " << m_config.m_squelch
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<< " m_ctcssOn: " << m_config.m_ctcssOn
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<< " m_audioMute: " << m_config.m_audioMute;
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@ -345,6 +350,12 @@ void NFMDemod::apply()
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m_settingsMutex.unlock();
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}
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if (m_config.m_squelchGate != m_running.m_squelchGate)
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{
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m_agcAttack = 480 * m_config.m_squelchGate; // gate is given in 10s of ms at 48000 Hz audio sample rate
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m_AGC.resize(m_agcAttack, m_agcLevel);
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}
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if (m_config.m_squelch != m_running.m_squelch)
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{
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// input is a value in tenths of dB
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@ -357,6 +368,7 @@ void NFMDemod::apply()
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m_running.m_inputFrequencyOffset = m_config.m_inputFrequencyOffset;
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m_running.m_rfBandwidth = m_config.m_rfBandwidth;
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m_running.m_afBandwidth = m_config.m_afBandwidth;
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m_running.m_squelchGate = m_config.m_squelchGate;
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m_running.m_squelch = m_config.m_squelch;
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m_running.m_volume = m_config.m_volume;
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m_running.m_audioSampleRate = m_config.m_audioSampleRate;
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@ -44,6 +44,7 @@ public:
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Real rfBandwidth,
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Real afBandwidth,
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Real volume,
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int squelchGate,
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Real squelch,
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bool ctcssOn,
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bool audioMute);
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@ -76,7 +77,8 @@ private:
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public:
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Real getRFBandwidth() const { return m_rfBandwidth; }
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Real getAFBandwidth() const { return m_afBandwidth; }
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Real getVolume() const { return m_volume; }
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Real getVolume() const { return m_volume; }\
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int getSquelchGate() const { return m_squelchGate; }
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Real getSquelch() const { return m_squelch; }
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bool getCtcssOn() const { return m_ctcssOn; }
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bool getAudioMute() const { return m_audioMute; }
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@ -84,17 +86,19 @@ private:
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static MsgConfigureNFMDemod* create(Real rfBandwidth,
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Real afBandwidth,
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Real volume,
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int squelchGate,
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Real squelch,
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bool ctcssOn,
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bool audioMute)
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{
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return new MsgConfigureNFMDemod(rfBandwidth, afBandwidth, volume, squelch, ctcssOn, audioMute);
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return new MsgConfigureNFMDemod(rfBandwidth, afBandwidth, volume, squelchGate, squelch, ctcssOn, audioMute);
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}
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private:
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Real m_rfBandwidth;
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Real m_afBandwidth;
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Real m_volume;
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int m_squelchGate;
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Real m_squelch;
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bool m_ctcssOn;
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bool m_audioMute;
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@ -102,6 +106,7 @@ private:
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MsgConfigureNFMDemod(Real rfBandwidth,
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Real afBandwidth,
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Real volume,
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int squelchGate,
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Real squelch,
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bool ctcssOn,
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bool audioMute) :
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@ -109,6 +114,7 @@ private:
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m_rfBandwidth(rfBandwidth),
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m_afBandwidth(afBandwidth),
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m_volume(volume),
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m_squelchGate(squelchGate),
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m_squelch(squelch),
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m_ctcssOn(ctcssOn),
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m_audioMute(audioMute)
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@ -131,6 +137,7 @@ private:
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qint64 m_inputFrequencyOffset;
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Real m_rfBandwidth;
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Real m_afBandwidth;
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int m_squelchGate;
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Real m_squelch;
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Real m_volume;
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bool m_ctcssOn;
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@ -143,6 +150,7 @@ private:
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m_inputFrequencyOffset(0),
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m_rfBandwidth(-1),
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m_afBandwidth(-1),
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m_squelchGate(50),
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m_squelch(0),
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m_volume(0),
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m_ctcssOn(false),
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@ -57,6 +57,7 @@ void NFMDemodGUI::resetToDefaults()
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ui->rfBW->setValue(4);
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ui->afBW->setValue(3);
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ui->volume->setValue(20);
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ui->squelchGate->setValue(5);
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ui->squelch->setValue(-40);
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ui->deltaFrequency->setValue(0);
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ui->ctcssOn->setChecked(false);
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@ -78,6 +79,7 @@ QByteArray NFMDemodGUI::serialize() const
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s.writeS32(8, ui->ctcss->currentIndex());
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s.writeBool(9, ui->ctcssOn->isChecked());
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s.writeBool(10, ui->audioMute->isChecked());
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s.writeS32(11, ui->squelchGate->value());
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return s.final();
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}
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@ -123,6 +125,8 @@ bool NFMDemodGUI::deserialize(const QByteArray& data)
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ui->ctcssOn->setChecked(boolTmp);
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d.readBool(10, &boolTmp, false);
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ui->audioMute->setChecked(boolTmp);
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d.readS32(11, &tmp, 5);
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ui->squelchGate->setValue(tmp);
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blockApplySettings(false);
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m_channelMarker.blockSignals(false);
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@ -189,6 +193,12 @@ void NFMDemodGUI::on_volume_valueChanged(int value)
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applySettings();
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}
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void NFMDemodGUI::on_squelchGate_valueChanged(int value)
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{
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ui->squelchGateText->setText(QString("%1").arg(value * 10.0, 0, 'f', 0));
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applySettings();
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}
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void NFMDemodGUI::on_squelch_valueChanged(int value)
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{
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ui->squelchText->setText(QString("%1").arg(value / 10.0, 0, 'f', 1));
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@ -312,6 +322,7 @@ void NFMDemodGUI::applySettings()
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m_rfBW[ui->rfBW->value()],
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ui->afBW->value() * 1000.0,
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ui->volume->value() / 10.0,
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ui->squelchGate->value(), // in 10ths of ms
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ui->squelch->value(),
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ui->ctcssOn->isChecked(),
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ui->audioMute->isChecked());
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@ -43,6 +43,7 @@ private slots:
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void on_rfBW_valueChanged(int value);
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void on_afBW_valueChanged(int value);
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void on_volume_valueChanged(int value);
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void on_squelchGate_valueChanged(int value);
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void on_squelch_valueChanged(int value);
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void on_ctcss_currentIndexChanged(int index);
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void on_ctcssOn_toggled(bool checked);
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@ -6,8 +6,8 @@
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<rect>
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<x>0</x>
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<y>0</y>
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<width>281</width>
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<height>162</height>
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<width>279</width>
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<height>172</height>
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</rect>
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</property>
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<property name="font">
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@ -25,7 +25,7 @@
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<x>0</x>
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<y>0</y>
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<width>271</width>
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<height>131</height>
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<height>161</height>
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</rect>
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</property>
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<property name="windowTitle">
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@ -243,7 +243,7 @@
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<item>
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<widget class="QLabel" name="volumeLabel">
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<property name="text">
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<string>Volume</string>
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<string>Vol</string>
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</property>
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</widget>
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</item>
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@ -289,14 +289,14 @@
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<item>
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<widget class="QLabel" name="squelchLabel">
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<property name="text">
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<string>Squelch</string>
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<string>Sq</string>
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</property>
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</widget>
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</item>
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<item>
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<widget class="QSlider" name="squelch">
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<property name="toolTip">
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<string>Squelch</string>
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<string>Squelch threshold (dB)</string>
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</property>
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<property name="minimum">
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<number>-1000</number>
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@ -323,6 +323,9 @@
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<height>0</height>
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</size>
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</property>
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<property name="toolTip">
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<string>Squelch threshold (dB)</string>
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</property>
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<property name="text">
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<string>-15.0</string>
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</property>
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@ -331,6 +334,53 @@
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</property>
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</widget>
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</item>
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<item>
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<widget class="QDial" name="squelchGate">
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<property name="maximumSize">
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<size>
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<width>24</width>
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<height>24</height>
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</size>
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</property>
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<property name="toolTip">
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<string>Squelch gate (ms)</string>
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</property>
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<property name="minimum">
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<number>1</number>
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</property>
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<property name="maximum">
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<number>50</number>
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</property>
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<property name="pageStep">
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<number>1</number>
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</property>
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<property name="value">
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<number>5</number>
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</property>
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<property name="sliderPosition">
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<number>5</number>
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</property>
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</widget>
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</item>
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<item>
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<widget class="QLabel" name="squelchGateText">
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<property name="minimumSize">
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<size>
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<width>25</width>
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<height>0</height>
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</size>
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</property>
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<property name="toolTip">
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<string>Squelch gate (ms)</string>
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</property>
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<property name="text">
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<string>000</string>
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</property>
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<property name="alignment">
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<set>Qt::AlignRight|Qt::AlignTrailing|Qt::AlignVCenter</set>
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</property>
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</widget>
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</item>
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</layout>
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</item>
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<item>
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@ -84,7 +84,7 @@
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<item>
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<widget class="QLabel" name="label_2">
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<property name="text">
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<string><html><head/><body><p>Version 1.1.5 - Copyright (C) 2015-2016 Edouard Griffiths, F4EXB. </p><p>Code at <a href="https://github.com/f4exb/sdrangel"><span style=" text-decoration: underline; color:#0000ff;">https://github.com/f4exb/sdrangel</span></a> This is a complete redesign from RTL-SDRangelove at <a href="https://github.com/hexameron/rtl-sdrangelove"><span style=" text-decoration: underline; color:#0000ff;">https://github.com/hexameron/rtl-sdrangelove</span></a></p><p>Many thanks to the original developers:</p><p>The osmocom developer team - especially horizon, Hoernchen &amp; tnt.</p><p>Christian Daniel from maintech GmbH.</p><p>John Greb (hexameron) for the contributions in RTL-SDRangelove</p><p>The following rules apply to the SDRangel main application and libsdrbase:<br/>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 the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. You should have received a copy of the GNU General Public License along with this program. If not, see <a href="http://www.gnu.org/licenses/"><span style=" text-decoration: underline; color:#0000ff;">http://www.gnu.org/licenses/</span></a>.</p><p>For the license of installed plugins, look into the plugin list.</p></body></html></string>
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<string><html><head/><body><p>Version 1.1.6 - Copyright (C) 2015-2016 Edouard Griffiths, F4EXB. </p><p>Code at <a href="https://github.com/f4exb/sdrangel"><span style=" text-decoration: underline; color:#0000ff;">https://github.com/f4exb/sdrangel</span></a> This is a complete redesign from RTL-SDRangelove at <a href="https://github.com/hexameron/rtl-sdrangelove"><span style=" text-decoration: underline; color:#0000ff;">https://github.com/hexameron/rtl-sdrangelove</span></a></p><p>Many thanks to the original developers:</p><p>The osmocom developer team - especially horizon, Hoernchen &amp; tnt.</p><p>Christian Daniel from maintech GmbH.</p><p>John Greb (hexameron) for the contributions in RTL-SDRangelove</p><p>The following rules apply to the SDRangel main application and libsdrbase:<br/>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 the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. You should have received a copy of the GNU General Public License along with this program. If not, see <a href="http://www.gnu.org/licenses/"><span style=" text-decoration: underline; color:#0000ff;">http://www.gnu.org/licenses/</span></a>.</p><p>For the license of installed plugins, look into the plugin list.</p></body></html></string>
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</property>
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<property name="wordWrap">
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<bool>true</bool>
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