JT wrote: > Neither of those are accurate. The *.cda files are a virtual > filesystem Windows 9x imposes on CDs. There are no files on am > audio CD, just 44.1KHz PCM audio data. The CD burning program > converts the waves to that data when it burns the CD. This is exactly the case. There's nothing in built into Windows that takes a file and burns it to an audio CD (the inverse of the "ripping" operation, which is not built into Windows either). The CDA files are just a mechanism to make Windows Explorer start up "CD Player" when you double click on a CDA file. Windows itself cannot actually read the CDA file; "CD player" just sends the appropriate commands to the CDROM drive and the drive usually outputs analog audio directly to the mixer in the sound- card. The CPU never sees any digital audio data at all. It just sees the subcode data to update the information on the display. BTW - WAV files are a header followed by raw audio data. Among other things, header describes the sample rate (Fs) and sample type (8-bit, 16-bit, PCM, muLaw, aLaw, etc). A 44.1KHz 16-bit PCM stereo WAV file contains bit-for-bit the audio data that would go on an audio CD. An 8KHz 8-bit muLaw mono WAV file contains bit-for-bit the audio data that US phone companies use. ----------------------------------------------------------------- To stop getting this list send a message containing just the word "unsubscribe" to [EMAIL PROTECTED]
