PocketSPC is a SNES sound chip emulator for the Nintendo DS. The SPC700 is capable of 8 channel stereo playback at 32,000Hz with ADSR envelope support per voice, and an 8 tap FIR filter. Currently all 8 channels are emulated in stereo, with full ADSR support. Changes:

Fixed some somewhat major bugs, one in particular that gets rid of a ton of sample errors. Also fixes a bug with loading some SPC’s that caused them to not work. End result is this version sounds much better than the previous version.

http://pocketspc.pocketheaven.com/