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Try to keep tuner at same spot when changing fft size

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This commit is contained in:
Eoin Mcloughlin
2016-12-18 14:02:29 +00:00
committed by Mike Walters
parent ba791971b9
commit fc9acfe376
1 changed files with 4 additions and 1 deletions
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5
spectrogramplot.cpp
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@@ -33,7 +33,7 @@
SpectrogramPlot::SpectrogramPlot(std::shared_ptr<SampleSource<std::complex<float>>> src) : Plot(src), inputSource(src), fftSize(512), tuner(this)
{
setFFTSize(512);
setFFTSize(fftSize);
zoomLevel = 1;
powerMax = 0.0f;
powerMin = -50.0f;
@@ -274,6 +274,7 @@ std::shared_ptr<AbstractSampleSource> SpectrogramPlot::output()
void SpectrogramPlot::setFFTSize(int size)
{
float sizeScale = float(size) / float(fftSize);
fftSize = size;
fft.reset(new FFT(fftSize));
@@ -283,6 +284,8 @@ void SpectrogramPlot::setFFTSize(int size)
}
setHeight(fftSize);
tuner.setDeviation( tuner.deviation() * sizeScale );
tuner.setCentre( tuner.centre() * sizeScale );
}
void SpectrogramPlot::setPowerMax(int power)