Hi,

can you use Pd to convert audio to numeric values and store it in a text file?

I am trying out this project in order to store/play a snippet of audio from an Arduino uno/nano.

https://www.arduino.cc/reference/en/libraries/pcm/

Following this guide you can use a Processing app or script to convert the audio to numeric values.

http://highlowtech.org/?p=1963

This is not working, probably since I am on OSX Monterey. I will try to get the Processing script working but then I though that maybe there is a way to do this in Pd. I need to get the data as numbers in a text file, so not streamed real time.

?

@cfry You can write the audio to an array.... [tabwrite~] will do that for a stream, or [soundfiler] for an audio file. Then the [array can be written to a text file...... https://forum.pdpatchrepo.info/topic/2975/writing-arrays-on-a-textfile
David.

I noticed that the linked "writing arrays" thread is 13 years old.

I suppose that at that time, the following (from the array.pd help patch) didn't exist...?

If the "write" message meets the need, then it wouldn't be necessary to introduce the complications of [textfile] or [tabdump].

hjh

If you don't need PD for anything else you maybe use something lighter.
See https://stackoverflow.com/questions/28137559/can-someone-explain-wavwave-file-headers to know your file header size, replace 44 below if needed.
hexdump --skip 44 --no-squeezing --format '2/2 "%3d "' 'file.wav' show decimal signed int