1.7 KiB
1.7 KiB
Ensoniq ES5506 (OTTO)
Sample-based synthesis chip used in a bunch of Taito arcade machines and PC sound cards like Soundscape Elite. A variant of it was the heart of the well-known Gravis Ultrasound.
it supports a whooping 32 channels of 16-bit PCM and:
- Real time digital filters
- Frequency interpolation
- Loop start and stop positions for each voice (bidirectional and reverse looping)
- Internal volume multiplication and stereo panning
- Hardware support for envelopes
effects
10xx: set waveform.11xx: set filter mode (0-3)120x: set pause (bit 0). Pauses the sample until the bit is unset, where it will then resume where it left off.14xx: set filter coefficient K1 low byte.15xx: set filter coefficient K1 high byte.16xx: set filter coefficient K2 low byte.17xx: set filter coefficient K2 high byte.18xx: set filter coefficient K1 slide up.19xx: set filter coefficient K1 slide down.1Axx: set filter coefficient K2 slide up.1Bxx: set filter coefficient K2 slide down.20xx: set envelope count.22xx: set envelope left volume ramp.23xx: set envelope right volume ramp.24xx: set envelope filter coefficient K1 ramp.25xx: set envelope filter coefficient K1 ramp (slower).26xx: set envelope filter coefficient K2 ramp.27xx: set envelope filter coefficient K2 ramp (slower).3xxx: set coarse filter coefficient K1.4xxx: set coarse filter coefficient K2.81xx: set panning (left channel).82xx: set panning (right channel).88xx: set panning (rear channels).89xx: set panning (rear left channel).8Axx: set panning (rear right channel).9xxx: set sample offset (x256).DFxx: set sample playback direction.