One way to check this, is to compile the different sound drivers into the kernel and check whether they are detected or not.
As a last resort you may look on to the inscription of the soundchip itself.
The Advanced Linux Sound Architecture aims to: be a fully-modularized sound driver which supports kerneld/kmod, ensure compatibility with most binary OSS/Lite applications, create an ALSA Library (C,C++) which covers the ALSA Kernel API for applications, and create ALSA Manager, an interactive configuration program for the driver.
Oki is the first semiconductor company in Japan to develop a sound generator IC specifically for the Chinese market with a commitment to develop "e-sound" (excellent sound quality) that suits the Chinese market.
The two chips are ready to be used by the Chinese mobile phone manufacturers and also those in Europe, North America, Korea, Japan, Taiwan, etc., who are focusing in the Chinese market.
Sound data sampled from real sound is stored as a ROM file, and replayed by digital/analog conversion.