CW-7502 -> cdda2wav -> zeroes

I am trying to use Cdda2wav version 0.8 to read audio tracks from a Panasonic CW-7502 (which is widely reported to have good CDDA reading capability). The program can read and display the TOC correctly and it writes the correct number of bytes into the output file, but all of the audio samples are zero (total silence).

Why don't I get the actual audio data?

Thanks in advance for any help or advice,

					-=] Mike [=-

Linux 2.0.33 on x86
SCSI Adapter: Adaptec AHA-294X Ultra SCSI host adapter
Host: scsi0 Channel: 00 Id: 06 Lun: 00
Vendor: MATSHITA Model: CD-R CW-7502 Rev: 4.10
Type: CD-ROM ANSI SCSI revision: 02

Here is a sample run with output to my "hist" program which prints out the number of bytes with each byte value. cdda2wav in raw mode outputs nothing but zero bytes for me.

cdda2wav -O raw - | hist
Cdda2wav version 0.8
track pre-emphasis copy-permitted tracktype channels sub-Q-channel
1-18 no no audio 2 position
Table of Contents: total tracks:18, (total time 52:37.97)

  1.( 2:47.16),  2.( 3:13.27),  3.( 2:32.80),  4.( 2:47.71),  5.( 2:49.20)
  6.( 2:08.36),  7.( 3:59.33),  8.( 2:05.37),  9.( 3:22.23), 10.( 2:39.64)

11.( 3:20.93), 12.( 3:17.33), 13.( 3:16.29), 14.( 3:28.91), 15.( 2:35.53) 16.( 2:11.27), 17.( 3:00.33), 18.( 2:59.87)

Table of Contents: starting sectors

  1.(      33),  2.(   12570),  3.(   27065),  4.(   38525),  5.(   51103)
  6.(   63793),  7.(   73420),  8.(   91370),  9.(  100773), 10.(  115940)
 11.(  127913), 12.(  142983), 13.(  157783), 14.(  172505), 15.(  188173)
 16.(  199838), 17.(  209683), 18.(  223208), lead-out(  236698)

recording 167.16000 seconds stereo with 16 bits @ 44100 Hz ->'standard output'... samplefile size will be 29487024 bytes.
0x00 29487024

That happens here too; I was trying to do it earlier with xcdroast. First it told me it couldn't tell the drive type; then I picked SCSI-3/mmc and got huge sound files containing null data, which isn't surprising since it didn't actually use the drive to do the extraction.

I don't know what the fix is. I extracted the stuff on my CR-585 reader instead. For some reason xcdroast thinks it can't extract audio from IDE, even though cdda2wav can do it just fine.

Hamish

Hamish Moffatt, StudIEAust              [email protected], [email protected]
Student, computer science & computer systems engineering.    4th year, RMIT.
http://hamish.home.ml.org/ (PGP key here)             CPOM: [*******   ] 73%
Nondeterminism means never having to say you are wrong.

[ ... ]

A few other people reported that they had the same difficulty.

For the record: An email from cdda2wav author Heiko Eissfeldt <[email protected]> indicated that a newer version of cdda2wav exists which works with the CW-7502:

    ftp://ftp.gwdg.de/pub/linux/misc/cdda2wav/cdda2wav-0.95beta07.tar.gz

I tried it and it worked perfectly!

					-=] Mike [=-