Re: [ecasound] Piping to ecasound

The data on an audio CD is organized in frames which are 1/75 sec of a
second long and there is no provision for partial frames.

One fix is to use the -pad option with cdrecord. That will add zeros
(silence) to the end of each track to make it the correct length (i.e., a
multiple of 2352 bytes = 44100/75 * 4).

Aaron Heller <heller@email-addr-hidden>
Menlo Park, CA USA

--On Thursday, March 31, 2005 12:01 -0800 Bill Moseley <moseley@email-addr-hidden>
wrote:

> This is back to removing voice from the linux audio list.
>
> I'm sorry to say I don't know much about audio. I'm trying to now
> burn the audio back to cdr and cdrecord is giving an error:
>
> cdrecord: Bad audio track size 30750092 for track 01.
> cdrecord: Audio tracks must be at least 705600 bytes and a multiple
> of 2352.
>
> I'm wondering if it has something to do with not using raw input format.
> The man pages for ecasound says when using -i stdin that the audio is
> expected to be in raw format.
>
> I'm piping flac to ecasound and was not able to use --force-raw-format
> flac option. Indeed, this plays the audio just fine.
>
> flac -dc test.flac | ecasound -i stdin -o alsa
>
> So to convert a collection of flac files I'm using this in a script:
>
> for x in "$DIR"/*.flac; do
> OUTFILE="$(basename $x .flac ).wav"
>
> echo "Generating: $OUTFILE"
>
> flac -dc "$x" | \
> ecasound \
> -q \
> -a:1,2, \
> -i stdin \
> -o "$OUTFILE" \
> -a:1 \
> -el:karaoke,-40 \
> -ea:200 \
> -a:2 \
> -efl:400
> done
>
> Here's that first track:
>
> moseley@email-addr-hidden:~/wav$ file test.wav
> test.wav: RIFF (little-endian) data, WAVE audio, Microsoft PCM, 16
> bit, stereo 44100 Hz
>
> moseley@email-addr-hidden:~/wav$ ls -l test.wav
> -rw-r--r-- 1 moseley moseley 30750136 2005-03-31 11:56 test.wav
>
> And alsaplayer plays test.wav just fine, too.
>
>
> I'm burning with
>
> cdrecord -dao *.wav
>
>
> Am I now creating the correct output wav from ecasound?
>
>
> Thanks,

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Received on Fri Apr 1 00:15:07 2005