Can someone send me example files with encoding loop positions? I started with demo soundfile meta data reading/writing but now I need some sample files to work with. I saved a couple via Logic Pro X but the region info is saved as simple markers, not using instrument or sampler chunks.
On Feb 12, 2020, at 3:48 PM, Ingo ingo@miamiwave.com wrote:
How would loopautitioneer automatically reed the loop points from within Pd and transfer them? I can reed the loop points externally with no problem. My problem is to set the loop points automatically from within Pd.
Ingo
From: José de Abreu [mailto:abreubacelar@gmail.com] Sent: Wednesday, February 12, 2020 3:08 PM To: Giulio Moro Cc: k.s.matheussen@notam02.no; Ingo; Dan Wilcox; Pd-List Subject: Re: [PD] Sample loop - start and end point (WAV files)
hello all, i don't know if it is relevant, but my simple google search returned this software too:
http://loopauditioneer.sourceforge.net/ http://loopauditioneer.sourceforge.net/
LoopAuditioneer is a software for evaluating, creating and manipulating loops and cues existing in wav file metadata. It's envisionaged to be useful for sample production for virtual pipe organs, like for instance GrandOrgue http://sourceforge.net/projects/ourorgan/ software.
SOURCE CODE:
Is available on http://sourceforge.net/projects/loopauditioneer/ http://sourceforge.net/projects/loopauditioneer/ by SVN.
Em qua., 12 de fev. de 2020 às 08:15, Giulio Moro via Pd-list <pd-list@lists.iem.at mailto:pd-list@lists.iem.at> escreveu:
libsndfile also can extract loop points from a variety of formats. The relevant code for wav is here https://github.com/erikd/libsndfile/blob/master/src/wav.c#L1140-L1163 https://github.com/erikd/libsndfile/blob/master/src/wav.c#L1140-L1163
Kjetil Matheussen wrote:
On Wed, Feb 12, 2020 at 10:56 AM Kjetil Matheussen <k.s.matheussen@gmail.com mailto:k.s.matheussen@gmail.com> wrote:
On Wed, Feb 12, 2020 at 10:14 AM Ingo <ingo@miamiwave.com mailto:ingo@miamiwave.com> wrote:
Thanks, Dan!
They must be embedded in the "Marker Chunk" in AIFF and in the "Cue Point Chunk" in the WAV format.
This gives me a further idea for searching on.
Yes, loops are usually defined as "Loop Start" and "Loop End" cues,
Hmm, or maybe they are usually defined in the "smpl" chunk, I don't remember...
But here's the code to get loop data from a wav file in radium: https://github.com/kmatheussen/radium/blob/master/audio/Sampler_plugin_wav_p... https://github.com/kmatheussen/radium/blob/master/audio/Sampler_plugin_wav_parse.c#L253
First it checks if there is a loop in the "smpl" chunk. If there isn't loop data there, it checks for "Loop Start" and "Loop End" cues.
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