Apple Screamer Audio: looking for testers

Marco Trillo marcotrillo at gmail.com
Tue Oct 7 20:47:39 UTC 2008


Hi,

On Tue, Oct 7, 2008 at 8:50 PM, Andreas Tobler <andreast-list at fgznet.ch> wrote:
>>> Unfortunately, no. Silence. But this might be due to the fact that I do
>>> something wrong.
>>> I do not have the aifftools, so I simply tried the cdcontrol and there
>>> nothing happens, silence.
>>
>> The 'cdcontrol' utility uses the CD drive itself to play the CD, it
>> does not use the system digital audio device -- in fact it does not
>> need sound support at all.
>>
>> To use the system audio device you can use a digital player -- many
>> are available from the ports collection, for example "mpg321" for MP3
>> files. To play CDs you can rip the tracks from the CD with a tool such
>> as "cdda2wav",  "cdparanoia" or others, and then play the digital
>> files with an audio player .
>> The "aiffopen" utility is an example of such a player which reads AIFF
>> files only.
>
> Thanks for telling me. I'm not used to play with sound on my machines :)

Thank you for testing it and for your patience ...

> Ok, still building mpg321, was missing qt stuff etc.

Hmm... I find odd that mpg321 depends on qt stuff... :-(  .

> But nevertheless, I tried to play a bit around and I feel I have some basic
> issues which do not work.
> You say cdcontrol does not need sound support at all, do I expect correctly
> that I should get some sound out of my box then?

Yes, the CD analog output is connected to the sound device and can be
mixed with the normal output -- this also applies to the modem for
example. The current driver does not make this mixing configurable
yet.
However I think you get better results by playing the CD in digital
mode using the system's device. Mac OS X for example does this.

> Well, I do not get anything out of it right now. I followed the handbook's advices and
> cat'ed a file to /dev/dsp, nothing.
> Just fyi, I discovered that I have three plugs to plugin headphones, two on the front
> side and one at the right side where all other plugs are located. (enet, usb, etc.)
> As said it's an imac.
> If I plug my headphones in on the right side and cat a 'file' to /dev/dsp I get some
> noise. I do not get noise on speaker nor on the other plugs.

The port on the right side is a line-out jack for use with an amplifier.

Do you get any "Enabled outputs: ___" messages on the console when you
plug and unplug the headphones on the left and right front ports?

Thanks,
Marco.


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