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These four audio channels feed into three intermediate mixers. Two of these intermediate mixers are used for effects and aux.
These four audio channels feed into three intermediate mixers. Two of these intermediate mixers are used for effects and aux.
== Channel Config ==
== Frame Count ==
== Input Config ==
A 192 byte long structure. There are 24 of them.
A 192 byte long structure. There are 24 of them.
| 180
| 180
| u16
| u16
| bits[0:1]: 1 = mono, 2 = stereo; bits[2:3]: buffer format
| bits[0:1]: 1 = mono, 2 = stereo; bits[2:3]: buffer format, bits[5]: fade in
|-
|-
| 182
| 182
| u16
| u16
| ADPCM predictor
| ADPCM predictor/scale
|-
|-
| 184
| 184
| s16
| s16
| ADPCM yn1
| ADPCM y[n-1]
|-
|-
| 186
| 186
| s16
| s16
| ADPCM yn2
| ADPCM y[n-2]
|-
|-
| 188
| 188
| u16
| u16
| bit[0]: Has ADPCM data?; bit[1]: Is looping?
| bit[0]: ADPCM updated?; bit[1]: Is looping?
|-
|-
| 190
| 190
| 8
| 8
| u16
| u16
| ADPCM P/S
| 4 bits: ADPCM Predictor, 4 bits: ADPCM Scale
|-
|-
| 10
| 10
| s16[2]
| s16
| ADPCM yn[1,2]
| ADPCM y[n-1]
|-
| 11
| s16
| ADPCM y[n-2]
|-
|-
| 14
| 14
| u8
| u8
| Has ADPCM?
| ADPCM dirty?
|-
|-
| 15
| 15
|}
|}
=== Simple Filter Configuration ===
=== Simple Filter ===
This is a standard single-pole filter. The fall-off is 6dB per octave as you would expect.
This is a standard single-pole filter. The fall-off is 6dB per octave as you would expect.
| a1
| a1
|}
|}
== Input status ==
Read only.
== Input ADPCM coefficients ==
== DSP configuration ==
=== Delay Effect ===
Delay with feedback.
Length of delay is a multiple of audio frames. There are 160 samples per audioframe.
Feedback arm only has a gain on it. Under the feedback arm is a single-pole filter with the delay.
=== Reverb Effect ===
== DSP status ==
Read only.
== Output samples ==
Read only.
PCM16.
== Intermediate mix samples ==
Read/Write.
PCM32. Also serves an aux function, allowing the ARM11 to apply custom effects to audio.
== Compressor table ==
A precomputed response curve lookup table for the compressor.