CDDA

How do you create CDDA data?

Q)

After converting the data into data that can actually be handled by a computer, how do you convert it into a format that can be embedded in CD-DA?

A)

Assuming a Macintosh, generally,

• Use Digidesign's Sound Designer II (SD II) to record in HD or convert existing AIFF files to SD II format.

• Transfer SD II files to DOS or Unix.

• You can use it with VCD etc. by converting the endian using SWAP.EXE etc. that comes with VCD.

The CD-DA data to be passed to the VCD etc. should be of any type as long as the 44.1KHz 16bit Stereo PCM data is arranged as shown below.

• One frame consists of two words. Word is 16bit, little endian.

• The first word is the left channel, the next word is the right channel.

+0       +1       +2       +3       +4       +5       +6       +7 byte
 -------- -------- -------- -------- -------- -------- -------- --------
|<---------- frame 0 -------------->|<---------- frame 1 ---------------
|<------left----->|<----right------>|<------left----->|<----right-------
|<-low-->|<-high->|<-low-->|<-high->|<-low-->|<-high->|<-low-->|<-high--

Then add each to each CD-DA file in the script to build the CD.

 Track           CDDA
    Pause             150
    FileSource        \sample.da
    EndFileSource
 EndTrack 

I will write something like this.
Never change the "Pause 150" part in the above description.
One is required for each CD-DA data.
Also, be sure to set the PostGap of the track immediately before the CD-DA track to 150.