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Archived Sound Library for Processing
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No support for Sound library on ARM devices (Raspberry Pi) #86

Closed walkerdanny closed 7 years ago

walkerdanny commented 8 years ago

Hi,

I'm trying to implement an FFT analysis using the Sound library on a Raspberry Pi and it seems that support for ARM devices has not been added yet.

Has anyone ever compiled this for ARM?

Thanks.

gohai commented 7 years ago

This is about to get addressed with #103

posivibez commented 7 years ago

Sorry was this resolved?

I am still encountering error message that sound library is only available on 64-bit versions of processing when trying to run it on a rasberry pi 3.

I have tried using all versions of processing for linux available here: https://processing.org/download/

Thanks.

gohai commented 7 years ago

@posivibez Support for ARM machines has been added to the source tree, but it has yet to be included in a proper release (the most recent one is from April 2016).

There is an experimental build you can download here.

posivibez commented 7 years ago

@gohai thank you so much for the help

it is working when i test it. I am getting the below error, do you by any chance what may be causing this?

RtApiAlsa::getDeviceInfo: snd_pcm_open error for device (default), No such file or directory.

gohai commented 7 years ago

If it is working regardless this can be safely ignored for now.

On May 16, 2017 01:46, "Tyler" notifications@github.com wrote:

@gohai https://github.com/gohai thank you so much for the help

it is working when i test it. I am getting the below error, do you by any chance what may be causing this?

RtApiAlsa::getDeviceInfo: snd_pcm_open error for device (default), No such file or directory.

— You are receiving this because you were mentioned. Reply to this email directly, view it on GitHub https://github.com/processing/processing-sound/issues/86#issuecomment-301635500, or mute the thread https://github.com/notifications/unsubscribe-auth/AEt2KwTp8XjhnrhT_XX8I6Zi624QhHwdks5r6OPagaJpZM4JTrNp .

posivibez commented 7 years ago

cool thanks! @gohai

posivibez commented 7 years ago

I'm trying to set this project up with an rasberry pi (so it can be self contained) we were previously using a laptop: https://vimeo.com/191306219

There are five audio tracks running simultaneously and the sand on the acrylic is triggering light sensors which change the playback rate of the tracks. On the laptop as you can hear in the video the audio plays back smooth. When I am testing it now on the pi with the same code it will cause cracks and some distortion in the sound, especially when changing the rate of 2 or more tracks simultaneously.

Do you by any chance know if this may be due to the sound library support of ARM being incomplete at the moment, or could it be a hardware issue that the sound hardware on the rasberry pi 3 is not capable of that number of simultaneous tracks being played back and the rate change and that's causing the distortion?

Any thoughts would be super appreciated.

Thanks so much for all the help.

gohai commented 7 years ago

@posivibez Sorry, this is really not the place for individual tech support...

FYI: The Pi doesn't even have a proper sound card, but uses a PWM channel from the main SOC to synthesize wave forms. I can't say what the limitations are on this one, but I wouldn't be surprised it performs worse than a laptop costing upwards of 10x as much.