About ADPCM data - onitama/mucom88 GitHub Wiki

In MUCOM88 Windows, sampling data for the ADPCM sound source is managed in a file called "mucompcm.bin" by default. The "mucompcm.bin" directory contains the standard ADPCM sample.

        No. Sound
    -----------------------------------------------
	@0  kick
	@1  snare
	@2  kick+snare
	@3  crashcymbal
	@4  kick+cymbal
	@5  ac.tam
	@6  e.tam
	@7  snare2
	@8  o.hit
	@9  909kick
	@10 909snare
	@11 808openhihat
	@12 timbal
	@13 hand clap
	@14 timpani

It is possible for the user to convert their own ADPCM (sampling) data to be used as an ADPCM data file. In advance, you can save a text file that describes the file name to be put together. For example, write these three lines in the file "pcmlist.txt".

	voice1.wav
	voice2.wav
	voice3.wav

And go to the mucom88win menu (F1) and select "pcmlist.txt" from the "Specify file list" button under "Tool" -> "Create PCM data file" to automatically create the ADPCM data file. The file name is "mypcm.bin" by default, but you can change it in the dialog.

The actual ADPCM file must be stored in the same folder as the text file describing the file list. The WAV file used here must be a 16-bit mono PCM data. The sampling frequency is corrected to 16 KHz during ADPCM conversion. (If there is a file with an extension other than WAV format in the list, it will be recognized as an ADPCM binary file, so it is possible to specify an ADPCM binary file created with the PC-8801.)

It is also possible to convert and use the entire ADPCM (sampling) data that the user has been using independently in MUCOM88 (MUSIC LALF). First of all, it is necessary to bring all the files on the disk used on PC-8801 to Windows. n88 DISK BASIC format disk (D88 format) is verified by using d88edj created by Mr. AKATTA as a tool to extract files from the disk (D88 format).

The D88EDJ is distributed at the following sites

d88edj -D88 Editor for Java-
http://www.cug.net/~akatta/

MUCOM88 uses binary files called "DATA" and data files such as "VOICE._1" and "VOICE._2" as ADPCM data. Expand them all into one folder, and then click on the button under mucom88win's menu (F1) -> Tool -> "Create PCM data file" to create a PCM data file.

The PCM data file used by default can be changed from the mucom88win menu (F1) by modifying the item specified in Option -> 'Standard ADPCM file'.

You can also specify the ADPCM data file explicitly by adding a line starting with "#pcm" as a tag in the MML.

	#pcm mucompcm.bin

The example above shows that MML uses the ADPCM data file "mucompcm.bin". This will automatically load the appropriate PCM data file when you play. Also, when a binary data file (.mub) is output, ADPCM data is also included in the output.

User-created ADPCM data files should be placed in the same folder as the MML data files.