On Thu, 14 Aug 2003 07:54:23 -0500
Dave Phillips <[EMAIL PROTECTED]> wrote:
> Greetings:
>
> I'm testing the Core Sound PDAudioCF card on a laptop, an Omnibook
> 4150, using a CF-to-PCMCIA adapter. The card appears to initialize
> correctly, and 'cat /proc/asound/cards' tells me this:
>
> 0 [PDAudioCF ]: PDAudio-CF - Core Sound PDAudio-CF
> Core Sound PDAudio-CF at 0x100, irq 11
>
> 'ls /proc/asound/card0' yields this information:
>
> [EMAIL PROTECTED]:~$ ls /proc/asound/card0/
> id oss_mixer pcm0c
>
> where 'pcm0c' is a subdirectory and oss_mixer simply lists mixer
> elements. However, I've been unable to invoke a mixer for the card. That
> might be why I receive the following error trying to use arecord:
>
> [EMAIL PROTECTED]:~$ arecord -Dhw:PDAudioCF -f cd
> RIFF$˙˙WAVEfmt o`aD¬o±acodata˙˙Recording WAVE 'stdout' : Signed 16 bit
> Little Endian, Rate 44100 Hz, Stereo
> arecord: pcm_read:1110: read error: Input/output error
Hi Dave,
Do you have a digital input connected? The thing that makes digital inputs
different from analogue ones is that they need to synch to the serial input
stream. For the PDAudioCF, this means that you need to tell it the input
sample rate. You can find this out by doing:
amixer -c PDAudioCF cget iface=PCM,name='IEC958 External Rate'
which will give you the sample rate if you have an input connected or 0
if no input is connected.
Once you know the input sample rate you should do one of these:
arecord -Dhw:PDAudioCF -r <rate> -f cd file.wav
arecord -Dhw:PDAudioCF -r <rate> -f cd >/dev/null
Erik
--
+-----------------------------------------------------------+
Erik de Castro Lopo [EMAIL PROTECTED] (Yes it's valid)
+-----------------------------------------------------------+
Everything that I've learned about computers I have boiled
down into three principles:
PC/Windows: You think it won't work, and it won't.
Macintosh: You think it will work, but it won't.
Unix: You think it won't work, but if you find the right
guru, you can make it work.
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