ログイン
このフォーラムでは世界中の人々が交流しているため、やり取りは英語で行われています。

Loops values not what I expect from loaded sf2

  • I have a soundfont file that polyphone opens and seems to handle correctly in every way except one. The sample loop points are what I expect for the first sample, but then every sample after that doesn't have a loop point. The first sample is "flute-C1". When I look at the shdr chunk in the sf2 file, I see this...

    In [317]: print(shdr_data[0])
    {'name': 'flute-C1', 'start': 0, 'end': 141542, 'startLoop': 42514, 'endLoop': 51303, 'sampleRate': 44100, 'originalPitch': 24, 'pitchCorrection': 0, 'link': 0, 'type': 1}

    ... and in Polyphone, when I look at the sample, I see loop values that match those values. However, the second sample is this...

    {'name': 'flute-D2', 'start': 141588, 'end': 287199, 'startLoop': 43730, 'endLoop': 55446, 'sampleRate': 44100, 'originalPitch': 38, 'pitchCorrection': 0, 'link': 0, 'type': 1}

    ... yet when I look at it in Polyphone, the start and stop are both "0".

    Does Polyphone get the sample loop values from the shdr chunk, or does it get the value from somewhere else? The behavior is hard for me to understand. Thank you.
  • I guess the soundfont has bad loop points. They seem to be absolute to the wav file, and not offsets. Sorry for the trouble.
  • CS 73 0
    Loop points are primarily contained in the .wav sample files. You can see them if you view the samples in a .wav editor.

    csw900

トピックに参加するには、ログインまたは登録してください。

Polyphoneにはあなたの力が必要です!

Polyphoneは無料ですが、ウェブサイトと開発には費用がかかります。少額の寄付でも大きな助けになります。

寄付する
トップへ
戻る