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NFM Modulator: Cleanup level meter code. Use experimental max value for modulation swing calculation

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This commit is contained in:
f4exb 2016-12-02 03:00:41 +01:00
parent 7a07b56b01
commit ea53e63556
4 changed files with 24 additions and 32 deletions
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3
plugins/channeltx/modnfm/nfmmod.cpp
View File

@ -134,7 +134,8 @@ void NFMMod::modulateSample()
pullAF(t);
calculateLevel(t);
m_modPhasor += (m_running.m_fmDeviation / (float) m_running.m_audioSampleRate) * m_bandpass.filter(t) * (M_PI / 1208.0f);
// 378 = 302 * 1.25; 302 = number of filter taps (established experimentally)
m_modPhasor += (m_running.m_fmDeviation / (float) m_running.m_audioSampleRate) * m_bandpass.filter(t) * (M_PI / 378.0f);
m_modSample.real(cos(m_modPhasor) * 32678.0f);
m_modSample.imag(sin(m_modPhasor) * 32678.0f);
}

7
plugins/channeltx/modnfm/nfmmodgui.ui
View File

@ -345,7 +345,7 @@
</size>
</property>
<property name="toolTip">
<string>Audio input volume</string>
<string>Audio input gain</string>
</property>
<property name="maximum">
<number>100</number>
@ -367,7 +367,7 @@
</size>
</property>
<property name="toolTip">
<string>Audio input volume level</string>
<string>Audio input gain value</string>
</property>
<property name="statusTip">
<string/>
@ -388,6 +388,9 @@
<verstretch>0</verstretch>
</sizepolicy>
</property>
<property name="toolTip">
<string>Volume meter. White line is 100% and shoul not be exceeded (red zone)</string>
</property>
</widget>
</item>
</layout>

45
sdrbase/gui/levelmeter.cpp
View File

@ -3,6 +3,7 @@
* Modifications made to:
* - use the widget horizontally
* - differentiate each area with a different color
* - allow overload by 25% with indication of 100% threshold and overload
**
** Copyright (C) 2015 The Qt Company Ltd.
** Contact: http://www.qt.io/licensing/
@ -130,45 +131,31 @@ void LevelMeter::paintEvent(QPaintEvent *event)
QPainter painter(this);
painter.fillRect(rect(), Qt::black);
// red zone on top half
QRect barTop = rect();
barTop.setBottom(0.5 * rect().height());
barTop.setLeft(0.75* rect().width());
painter.fillRect(barTop, Qt::red);
QRect bar = rect();
// old
// 100% full height white line
bar.setLeft(0.75* rect().width() - 2);
bar.setRight(0.75* rect().width());
painter.fillRect(bar, Qt::white);
// bar.setTop(rect().top() + (1.0 - m_peakHoldLevel) * rect().height());
// bar.setBottom(bar.top() + 5);
// painter.fillRect(bar, m_rmsColor);
// bar.setBottom(rect().bottom());
//
// bar.setTop(rect().top() + (1.0 - m_decayedPeakLevel) * rect().height());
// painter.fillRect(bar, m_peakColor);
//
// bar.setTop(rect().top() + (1.0 - m_rmsLevel) * rect().height());
// painter.fillRect(bar, m_rmsColor);
// Bottom moving gauge
// old v.2
bar.setTop(0.5 * rect().height());
// bar.setTop(rect().top() + (1.0 - m_peakHoldLevel) * rect().height());
// bar.setBottom(bar.top() + 5);
// painter.fillRect(bar, m_peakColor);
// bar.setBottom(rect().bottom());
//
// bar.setTop(rect().top() + (1.0 - m_decayedPeakLevel) * rect().height());
// painter.fillRect(bar, m_decayedPeakColor);
//
// bar.setTop(rect().top() + (1.0 - m_rmsLevel) * rect().height());
// painter.fillRect(bar, m_rmsColor);
// new
bar.setRight(rect().right() - (1.0 - m_peakHoldLevel) * rect().width());
bar.setRight(rect().right() - (1.0 - 0.75*m_peakHoldLevel) * rect().width());
bar.setLeft(bar.right() - 5);
painter.fillRect(bar, m_peakColor);
bar.setLeft(rect().left());
bar.setRight(rect().right() - (1.0 - m_decayedPeakLevel) * rect().width());
bar.setRight(rect().right() - (1.0 - 0.75*m_decayedPeakLevel) * rect().width());
painter.fillRect(bar, m_decayedPeakColor);
bar.setRight(rect().right() - (1.0 - m_rmsLevel) * rect().width());
bar.setRight(rect().right() - (1.0 - 0.75*m_rmsLevel) * rect().width());
painter.fillRect(bar, m_rmsColor);
}

1
sdrbase/gui/levelmeter.h
View File

@ -3,6 +3,7 @@
* Modifications made to:
* - use the widget horizontally
* - differentiate each area with a different color
* - allow overload by 25% with indication of 100% threshold and overload
**
** Copyright (C) 2015 The Qt Company Ltd.
** Contact: http://www.qt.io/licensing/