User calls the PCM task function periodically.
The library reads from CD, manages ring buffer, time management, supplies data to PCM buffer, and issues commands to sound driver.

ADPCM compatible

Can play while decompressing ADPCM compressed data.
ADPCM is a method defined as the data format of CD-ROM XA Audio, and can achieve excellent sound quality with a compression ratio of about 1/4.

Supports three types of file formats

1) AIFF format (PCM uncompressed)
2) CD-ROM XA Audio format (ADPCM compression)
3) Designated ADPCM format (CRC Audio Laboratory output format)

Pause function

The hardware does not have a PCM playback pause function, but you can easily pause using this library.

Multi playback

4 PCMs can be played at the same time.
∙ Plays BGM, and can be applied to three lines of speech that are layered asynchronously.
(It is not possible to include more than 2 ADPCM compressed data)