README.audio
上传用户:xiejiait
上传日期:2007-01-06
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- Why do I hear only noise from my first audio CD?
- You may have a byte swapping problem, try cdrecord -swab
- Cdrecord assumes Motorola/Network byte order (big-endian) on inpout
- regardless of the byte order of the CD-Recorder. If Cdrecord
- encounters a .vaw file, byte order is corrected to match the byte order
- of the .wav file.
- Cdrecord currently only supports Track at once. This gives 2 seconds
- pause between two audio tracks.
- The 2 seconds pause between two audio tracks is the CD ***standard***
- The standard says:
- Each track starts with 2 seconds of silence
- followed by at least 4 seconds of audio data.
- For that reason the 2 second pause is generated by the CD-R drive in
- Track at once (TAO) mode.
- CD's that have no pause bewteen two tracks are illegal (compared to RED BOOK).
- These illegal disks may be made with Disk At Once (DAO) only.
- In DAO mode the writing software needs to send the 2 seconds pause as
- binary zeroes and therefore is able to create illegal disks by
- sending audio data instead.
- This audio data (the last two seconds of a track in this case)
- however are part of the next track from viewing the TOC of the disk.
- The new SCSI-3/mmc standard conforming drives
- (such as the Yamaha CDR-400, Matsushita CW-7502 ...)
- may in future be able to change the 2 second pause even in TAO mode.
- Current firmware does not allow to do this, but I expect
- that (due to low level limitations) it will not be possible to set
- the pause to less than 5 sectors (0.066 seconds). From what I have been
- told from a firmware devlopper, it will most likely not do what
- people expect.
- You have to wait for DAO unless you own a TEAC drive that allows you
- to create a TAO disk with similar properties than a DAO disk.
- Joerg Schilling