Hey Pd list-

I'm having a bit of trouble debugging whether or not I can use Pd to get audio in on the Raspberry Pi. I'm using this USB audio dongle:

http://www.amazon.com/gp/product/B000N35A0Y/?ref=oh_details_o03_s01_i01&...

Following t3db0t's instructions, I am able to get audio out from Pd. Further research got me to edit my /boot/cmdline.txt file to add "dwc_otg.speed=1" at the end:

dwc_otg.lpm_enable=0 console=ttyAMA0,115200 kgdboc=ttyAMA0,115200 console=tty1 root=/dev/mmcblk0p2 rootfstype=ext4 elevator=deadline rootwait dwc_otg.speed=1

I also went ahead and removed pulse audio. I ran it twice just to be sure:

ohann@raspberrypi ~/pd $ sudo apt-get remove pulseaudio Reading package lists... Done Building dependency tree Reading state information... Done Package 'pulseaudio' is not installed, so not removed 0 upgraded, 0 newly installed, 0 to remove and 7 not upgraded.

Running alsamixer, it looks like my speaker and mic are on and armed, and my capture tab is on with the levels up.

Rebooting for good measure, I am still able to get t3db0t's testPatch.pd to work. I'm running this command with these flags:

pd -nogui -sounddev 1 testPatch.pd

I made a simple mic test on my mac to try testing the microphone in Pd on my Rasberry Pi. My very simple mic test can be found here:

http://heavenoutside.net/pd/mictest.pd

if you'd like to wget it. It is simply taking adc and sending it to dac.

When trying my mictest.pd patch, I hear a low constant tone that seems to be affected if I wiggle my mic input around. If I unplug my mic it becomes unbearably loud, then gets quiet again, making me think the input is kind of sort of working, but not really...

I'm not sure what other info might be helpful, but here is my asound.conf file:

pcm.!default { type hw card 0 device 0 }

And here are my devices listed with pd -nogui -listdev:

johann@raspberrypi ~/pd $ pd -nogui -listdev audio input devices:

1. Generic USB Audio Device (hardware)
2. Generic USB Audio Device (plug-in)

audio output devices:

1. Generic USB Audio Device (hardware)
2. Generic USB Audio Device (plug-in)

API number 1

no midi input devices found no midi output devices found snd_pcm_hw_params_set_channels (input): Invalid argument

Please let me know if you need anymore information from me. I could do some screen grabs from alsamixer if that would be helpful.

Thanks for any help in advance!

All the best, Johann