SoX sounded very promising when I read this! Unfortunately it doesn't seem to be able to read the sample meta data like loop points which is what I'm looking for since quite some time.

Any suggestions for reading loop (i. e. sample loop 1) start and end ponts?

Ingo

-----Original Message----- From: Pd-list [mailto:pd-list-bounces@lists.iem.at] On Behalf Of Peter P. Sent: Sunday, July 24, 2022 10:19 AM To: pd-list@lists.iem.at Subject: Re: [PD] wave and bwf chunk parsing and writing?

• Tom Erbe via Pd-list pd-list@lists.iem.at [2022-07-24 02:00]:

...

Is anyone aware of an external that can add self-defined metadata

?chunks? to a WAV file? What about the [command] running a SoX command?

cheersz, P

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Thanksfor the bytestruct link, IOhannes! I'll check this out.

Ingo

-----Original Message----- From: Pd-list [mailto:pd-list-bounces@lists.iem.at] On Behalf Of IOhannes m zmölnig Sent: Sunday, July 24, 2022 8:49 PM To: Pd-List Subject: Re: [PD] wave and bwf chunk parsing and writing?

Am 24. Juli 2022 01:50:53 MESZ schrieb Tom Erbe via Pd-list <pd- list@lists.iem.at>:

...

Is anyone aware of an external that can add self-defined metadata

?chunks? to a WAV file?

...

The built in [file]?

There's also a compagnion library 'bytestruct' for parsing/creating binary data, which I intended to submit to Pd-core after 'file' was accepted, but I forgot (or i did submit, but it was never accepted). In any case, the 'bytestruct' can be found at [1], and I'll probably upload it to deken if there's interest.

Now, bytestruct will *allow* you to do what you want on a patchlevel (rather than present a ready to use solution for your feature request). However, it should be pretty simple: [2] contains an example in how to read loop-points from WAVs.

mfg.sfg.jfd IOhannes

[1] https://git.iem.at/pd/bytestruct/ [2] https://github.com/pure-data/pure-data/pull/1361

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thank you, IOhannes

this is really helpful, i’ll try this out by creating a wavescan ‘clm ‘ chunk for serum

https://www.kvraudio.com/forum/viewtopic.php?t=517146 https://www.kvraudio.com/forum/viewtopic.php?t=517146

best, tom

On Jul 24, 2022, at 11:48 AM, IOhannes m zmölnig zmoelnig@iem.at wrote:

Am 24. Juli 2022 01:50:53 MESZ schrieb Tom Erbe via Pd-list pd-list@lists.iem.at:

...

Is anyone aware of an external that can add self-defined metadata “chunks” to a WAV file?

The built in [file]?

There's also a compagnion library 'bytestruct' for parsing/creating binary data, which I intended to submit to Pd-core after 'file' was accepted, but I forgot (or i did submit, but it was never accepted). In any case, the 'bytestruct' can be found at [1], and I'll probably upload it to deken if there's interest.

Now, bytestruct will *allow* you to do what you want on a patchlevel (rather than present a ready to use solution for your feature request). However, it should be pretty simple: [2] contains an example in how to read loop-points from WAVs.

mfg.sfg.jfd IOhannes

[1] https://git.iem.at/pd/bytestruct/ [2] https://github.com/pure-data/pure-data/pull/1361

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