Re: [Ipodlinux-devel] audio recording

[Mathieu <zi...@xw...>]

I tested your work ! It is a very good work ! Good job !
I tested with a 3.5 mm jack microphone in the connector for the headphone..
but when we play the sound there is some noise in the backround.. I don't
know if it is my microphone or your program...
I have a question: is it possible to record in stereo mode with the headset
connector or it is only available on the line out.. (I think about hardware
capabilities).. ?

I have no Ipod microphone to test that but I think that it wouldn't function
because there is a microphone AND a speaker in the device, so i think that
the ipod send a command by the serial port of the remote controle to the
microphone to switch "in microphone mode"... It's just supposition :) !

cheers,
Mathieu
----- Original Message -----
From: "Bernard Leach" <le...@bo...>
To: <ipo...@li...>
Sent: Monday, May 24, 2004 12:41 AM
Subject: Re: [Ipodlinux-devel] audio recording


>
> Sorry I should have mentioned, the recording is for 3rd generation iPods
> only.  First and 2nd generation iPods have a different audio chip which
> lacks the necessary ADC hardware.
>
> You can record by using the headphone jack (or I would assume a standard
> 3.5mm microphone) and the left channel.
>
> The line-in mentioned below is possible by plugging a stereo source into
> your line out plug on the dock...
>
> cheers,
> bern.
>
> On Sun, 2004-05-23 at 20:12, Bernard Leach wrote:
> > Hi all,
> >
> > I have just uploaded a beta release which adds initial support for audio
> > recording. Currently since there is still no mixer support its hardcoded
> > to use the headphone microphone port however recompiling allows line-in
> > recording.
> >
> > http://ipodlinux.sf.net/download/beta/uclinux-2.4.24-ipod1.tar.gz
> >
> > I have also uploaded a modifed version of podzilla that has a simple
> > record/playback function built in. The recorded audio is 44.1kHz (mono)
> > and saved to the file 'test.raw' in the current directory. Its pretty
> > scratchy at the moment but that should be fixable. I'd be especially
> > interested to anyone with a iPod microphone to see how it works.
> >
> > http://ipodlinux.sf.net/download/beta/podzilla
> >
> > The updated version of the audio driver exposed a problem in the mp3
> > playback program. A fixed version is also available.
> >
> > http://ipodlinux.sf.net/download/beta/mp3example
> >
> > To install the updated podzilla and mp3example simply copy them onto
> > your iPod's root partition into the sbin directory.
> >
> > Please note, these links will disappear when a final release is added to
> > the sourceforge download page:
> >
> > http://sourceforge.net/project/showfiles.php?group_id=73079
> >
> > cheers,
> > bern.
> >
> >
> >
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