Thanks for your reply Michael. This thread about audio output looks very interesting. I'm not trying to quit smoking at all.
Cheers, Pierre. 2012/8/29 Michael Zacherl <[email protected]> > > On 29.8.2012, at 09:15 , Pierre Massat wrote: > > > Nope, I used a randomly generated sequence of notes made with phasors, > ranging from 0 to 127 on the midi scale. > > Anyway, the quality of the analog output is not what concerns me here, > since it sounds ok with aplay. The problem is that the same type of sound > generated directly in Pd makes an awful lot of noise when i launch Pd at > start-up, though it sounds ok on the hdmi output. > > Maybe it's something about the samplerate, no idea really. > > I planned to test that thoroughly, since I also noticed some differences > in using aplay and pd. > I think I mentioned that here in a different thread. > However, I don't find the time in moment, so that'll have to wait. > But I need a proper audio dongle anyway since I need inputs - so my focus > is more to get my head around this audio stuff in Linux. > > > It's a pity that no real serious documentation exists on how the audio > works (like the fact that the analog output is switched off when the hdmi > in plugged in : is it in the hardware ? can it be configured to not work > this way ?). > > sudo amixer cset numid=3 1 should do that hdmi is a 2 instead > of the 1 . > > That's permanent, if I'm not mistaken. > From: > http://raspberrypi.stackexchange.com/questions/44/why-is-my-audio-sound-output-not-working > I had the same issue a couple of weeks ago. > > Admittedly I've virtually no experience with Linux-audio, I'm spoiled by > Macs. :-\ > So I don't know where alsa puts this information about the outputs. > > > Nicorette is a brand that sells patches to stop smoking in France. I > thought it was funny :) > > yeah, it's an old brand. Just wondered if you try to stay away from > cigarettes. ;-) > > > > 2012/8/29 Michael Zacherl <[email protected]> > > > > On 28.8.2012, at 22:53 , Pierre Massat wrote: > > > > > Hi again, > > > > > > just a quick update : I tried running aplay at start-up (the same way > I was running Pd), with the same type of audio data (a simple 44,1KHz wav > file recorded from the Pd patch i'm testing the Pi with). It sounds much > better than Pd on the analog output. > > > So it should be an issue with Pd itself. Perhaps it start to quickly. > I dont know... > > > > > > > > just a short note: did you use a sine-sweep file for your test with > aplay? Or something similar smooth and simple? > > I reckon the built-in PWM-output can handle complex sounds better than > simple ones. > > I'm having some sort of deja-vu - didn't we discuss that some weeks > ago? ;-) > > > > BTW, nicorette?? :-) > > > > > > > > Cheers, > > > > > > Pierre. > > > > > > 2012/8/28 m.e.grimm <[email protected]> > > > hey pierre, > > > > > > what r u using for line-in? i have one of these: > > > http://www.amazon.com/gp/product/B0069L9PZA/ref=oh_details_o04_s01_i01 > > > > > > but have not had the chance to try it. > > > im curious what might be the best usb in/out for cheap. > > > > > > i also got this: > > > http://www.amazon.com/gp/product/B005CLMJLU/ref=oh_details_o02_s00_i00 > > > so i can ssh in on my local network (headless). although i have not > > > tried it w/out the powered usb hub. > > > > > > just my own status update. > > > > > > m > > > > > > On Tue, Aug 28, 2012 at 3:10 PM, Pierre Massat <[email protected]> > wrote: > > > > Hi all, > > > > > > > > I succesfully ran Pd on a headless Raspberry Pi (which is no big > feat per > > > > se. I've written a tutorial here : > > > > > http://guitarextended.wordpress.com/2012/08/28/running-pd-on-a-headless-raspberry-pi/ > ), > > > > but i'm getting a really heavily distorted sound from the analog > output. > > > > No idea why... > > > > Any experience to share? > > > > > > > > Cheers, > > > > > > > > Pierre. > > > > > > -- > > feed your perception: http://blauwurf.at > > http://soundcloud.com/noiseconformist > > > > > > > > > > _______________________________________________ > > [email protected] mailing list > > UNSUBSCRIBE and account-management -> > http://lists.puredata.info/listinfo/pd-list > > > > > > -- > feed your perception: http://blauwurf.at > http://soundcloud.com/noiseconformist > > > >
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