I m going to develop audio track editing app in ios.
I've created waveform of audio file already. And going to implement "copy" feature of selected waveform.
For this, I've get part data of NSData (audio file's) and draw waveform again with copied part data.
This formal way cant provide high speed to draw waveform for each actions (paste, delete).
So my questions is what is the best way to edit audio track ?
I will appreciate if anyone let me know similar open source link or blog link.
Thanks in advice