public interface AudioSpectrumListener
void spectrumDataUpdate(double timestamp, double duration, float magnitudes, float phases)
The notification period for updates may be set using
MediaPlayer.setAudioSpectrumInterval(double), and the number of bands and
sensitivity threshold via
MediaPlayer.setAudioSpectrumThreshold(int), respectively. The default
values of the settings are an interval of
128 bands, and sensitivity threshold
The arrays passed to the listener should be considered to be read-only as the underlying implementation may re-use them.
timestamp- timestamp of the event in seconds.
duration- duration for which the spectrum was computed in seconds.
magnitudes- array containing the non-positive spectrum magnitude in decibels (dB) for each band. The size of the array equals the number of bands and should be considered to be read-only.
phases- array containing the phase in the range [
Math.PI] for each band. The size of the array equals the number of bands and should be considered to be read-only.
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