<html>
<head>
<meta content="text/html; charset=ISO-8859-1"
http-equiv="Content-Type">
</head>
<body bgcolor="#FFFFFF" text="#000000">
<div class="moz-cite-prefix">I've had issues with the audio out as
well as USB audio but changing the sample rate to 48000 for the
USB audio interface works great. I haven't tried it with pd yet as
it was for a different project using Darkice to broadcast the
sound of a cafe from 6am until 12pm GMT (<a class="moz-txt-link-freetext" href="http://radeq.vacau.com">http://radeq.vacau.com</a>),
but as soon as I get the pi back I'll be looking into pd again...<br>
<br>
James<br>
<br>
Quoth Pierre Massat, on 29/08/2012 20:53:<br>
</div>
<blockquote
cite="mid:CAAGOWhbXsZnCOY7vQyT-aFs+N0x7q+7GJvjsgudJD1x-451VZw@mail.gmail.com"
type="cite">This is all very interesting!<br>
<br>
To get back to my initial problem, i managed to solve it by
launching Pd with a longer audio buffer (-audiobuf 100). For some
reason Pd came with a default buffer of 25ms.<br>
<br>
Now, I can't tell you whether it sounds as "good" or worse than
the same audio data played in aplay. I'll need to test this
further.<br>
<br>
Cheers,<br>
<br>
Pierre.<br>
<br>
<div class="gmail_quote">2012/8/29 Tedb0t <span dir="ltr"><<a
moz-do-not-send="true" href="mailto:lists@liminastudio.com"
target="_blank">lists@liminastudio.com</a>></span><br>
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex">
Ah, wow, that's crazy. Has anyone yet tried out any USB audio
interfaces on the RPi yet? I have one handy that I can try
but not until I get these client projects out of the way ;)<br>
<br>
I'm extremely curious if using a supported external audio
interface solves all the sound problems or if there are also
still alsa issues. I'm also now wondering who will be the
first to come out with an RPi audio "shield" ;)<br>
<br>
This renews my interest in modifying the RPi design to make a
Pd-friendly board that's intended to be headless with a
built-in quality DAC. But without RPi's supply chain hookups,
it'd be quite hard to keep the price down to the RPi's level!<br>
<br>
—t3db0t<br>
<div class="HOEnZb">
<div class="h5"><br>
On Aug 29, 2012, at 1:08 PM, Andy Farnell wrote:<br>
<br>
><br>
><br>
> Yes I heard that too. It's single bit PWM modulated
output.<br>
> Basically there's no DAC, so audio output is a fun
hack,<br>
> and likely as good as it's worth trying to make it
for<br>
> simple applications.<br>
><br>
> If you want good quality audio I/O there are things
like<br>
> Turtle Beach Amigo for about 15 quid<br>
> <a moz-do-not-send="true"
href="http://www.turtlebeach.com/products/sound-cards/audio-advantage-amigo-ii.aspx"
target="_blank">http://www.turtlebeach.com/products/sound-cards/audio-advantage-amigo-ii.aspx</a><br>
><br>
> You can take it out the board from its plastic
housing. Its about<br>
> as small as an SD card.<br>
><br>
> a.<br>
><br>
> On Wed, Aug 29, 2012 at 04:40:44PM +0200, Pierre
Massat wrote:<br>
>> There's a guy called "dom" on the RPi forum who
seems to be involved in<br>
>> audio development. I've seen his interventions in
a couple of audio related<br>
>> threads, and i got the information about the
analog output being simple<br>
>> filtered PWM off one of his posts.<br>
>> Might be interesting to get in touch with him.<br>
>><br>
>> Pierre.<br>
>><br>
>> 2012/8/29 Tedb0t <<a moz-do-not-send="true"
href="mailto:lists@liminastudio.com">lists@liminastudio.com</a>><br>
>><br>
>>> This is what I'm curious about; who is doing
this alsa development, where,<br>
>>> and can we pitch in? We are all interested
in getting the sound working<br>
>>> better on the Pi...<br>
>>><br>
>>> That said, it seems like the jury is out on
if it's an alsa problem or a<br>
>>> Pd problem. I seem to have experienced both.<br>
>>><br>
>>> —Tedb0t<br>
>>><br>
>>> On Aug 29, 2012, at 6:46 AM, geoffroy wrote:<br>
>>><br>
>>> With the PI the alsa is in alpha development
on the arm platform and<br>
>>> therefor won't be at it's best for a little
while. The floating point<br>
>>> integration in the latest system made the
audio a lot better, as on the<br>
>>> first gen OS of the PI the audio was just
impossible.<br>
>>><br>
>>><br>
>>><br>
>>>
_______________________________________________<br>
>>> <a moz-do-not-send="true"
href="mailto:Pd-list@iem.at">Pd-list@iem.at</a> mailing
list<br>
>>> UNSUBSCRIBE and account-management -><br>
>>> <a moz-do-not-send="true"
href="http://lists.puredata.info/listinfo/pd-list"
target="_blank">http://lists.puredata.info/listinfo/pd-list</a><br>
>>><br>
>>><br>
><br>
>> _______________________________________________<br>
>> <a moz-do-not-send="true"
href="mailto:Pd-list@iem.at">Pd-list@iem.at</a> mailing
list<br>
>> UNSUBSCRIBE and account-management -> <a
moz-do-not-send="true"
href="http://lists.puredata.info/listinfo/pd-list"
target="_blank">http://lists.puredata.info/listinfo/pd-list</a><br>
><br>
<br>
<br>
_______________________________________________<br>
<a moz-do-not-send="true" href="mailto:Pd-list@iem.at">Pd-list@iem.at</a>
mailing list<br>
UNSUBSCRIBE and account-management -> <a
moz-do-not-send="true"
href="http://lists.puredata.info/listinfo/pd-list"
target="_blank">http://lists.puredata.info/listinfo/pd-list</a><br>
</div>
</div>
</blockquote>
</div>
<br>
<br>
<fieldset class="mimeAttachmentHeader"></fieldset>
<br>
<pre wrap="">_______________________________________________
<a class="moz-txt-link-abbreviated" href="mailto:Pd-list@iem.at">Pd-list@iem.at</a> mailing list
UNSUBSCRIBE and account-management -> <a class="moz-txt-link-freetext" href="http://lists.puredata.info/listinfo/pd-list">http://lists.puredata.info/listinfo/pd-list</a>
</pre>
</blockquote>
<br>
</body>
</html>