DSP Emulator v0.11b2 WIP (2011/04/17) is released. DSP Emulator is a new version of the ZX SPECTRUM +3, ZX Spectrum 128, ZX Spectrum 48, Arcade, Amstrad CPC 464, NES and Game Boy emulator.

DSP Emulator v0.11b2 WIP Changelog:

18/04 - DSP Emulator 0.11b2 WIP 17/04 Long time since last WIP! Now released DSP 0.11b2 WIP 17/04, binary and source. Big changes on timer engine, cpu engine (added states for the interrupts of all CPUs) and new sound engine (more speed for all drivers), fixed main window resize mess. New ADPCM chip 'UPD7759', fixed OKI6295 sound quality. Fixed 'Prehistoric Isle in 1930' driver and now works fine with sound, added ADPCM to 'Combat School', fixed M68705 in 'Xain'd Sleena', fixed sound in '1942' and NMK16 driver ('Saboten Bombers' and 'Bombjack Twin') and small fixes here and there in all drivers...

Download: DSP Emulator v0.11b2 WIP (2011/04/17)
Source: Here