diff options
Diffstat (limited to 'examples/multimedia/spectrum')
| -rw-r--r-- | examples/multimedia/spectrum/app/spectrumanalyser.cpp | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/examples/multimedia/spectrum/app/spectrumanalyser.cpp b/examples/multimedia/spectrum/app/spectrumanalyser.cpp index e8a9f8dcb..6199221d1 100644 --- a/examples/multimedia/spectrum/app/spectrumanalyser.cpp +++ b/examples/multimedia/spectrum/app/spectrumanalyser.cpp @@ -135,8 +135,8 @@ void SpectrumAnalyserThread::calculateSpectrum(const QByteArray &buffer, if (i>0 && i<m_numSamples/2) imag = m_output[m_numSamples/2 + i]; - const qreal magnitude = sqrt(real*real + imag*imag); - qreal amplitude = SpectrumAnalyserMultiplier * log(magnitude); + const qreal magnitude = qSqrt(real*real + imag*imag); + qreal amplitude = SpectrumAnalyserMultiplier * qLn(magnitude); // Bound amplitude to [0.0, 1.0] m_spectrum[i].clipped = (amplitude > 1.0); |