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[espeak-ng:master] New Comment on Issue #178 upgrade internal audio quality (sample-rate & bit-depth)
By cmrdt:

also if audio file same quality as device native-sampling rate, it would not have to resample again

also android resamplers use up battery and may be of low quality.. detect native sampling rate maybe by playing a sine wave chirp at various sample-rates and looking at the spectrogram

roughness … Reduces the amplitude of alternate waveform cycles in order to make the voice sound creaky. if's it's artificial & not anti-aliased , if not adequately over-sampled introduces artifacts/distortions into the audio


[espeak-ng:master] New Comment on Issue #178 upgrade internal audio quality (sample-rate & bit-depth)
By cmrdt:

also if audio file same quality as device native-sampling rate, it would not have to resample again

also android resamplers use up battery and may be of low quality.. detect native sampling rate maybe by playing a sine wave chirp at various sample-rates and looking at the spectrogram

roughness … Reduces the amplitude of alternate waveform cycles in order to make the voice sound creaky.

if's it's artificial & not anti-aliased , if not adequately over-sampled introduces artifacts/distortions into the audio

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