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Sound Processing Unit of the PlayStation.
Sound Processing Unit of the PlayStation.


* Supports [[Adaptive differential pulse-code modulation|ADPCM]] sources with up to 24 channels
* Supports ADPCM sources with up to 24 channels
* [[Sampling rate]] of up to 44.1 [[Kilohertz|kHz]]
* Sampling rate of up to 44.1 kHz
* 512 [[Kibibytes|KB]] RAM
* 512 KB RAM
* PCM audio source
* PCM audio source
* Supports MIDI sequencing
* Supports MIDI sequencing
* Digital effects include:
* Digital effects include:
** [[Pitch bend|Pitch modulation]]
** Pitch modulation
** [[Attack-decay-sustain-release envelope|Envelope]]
** ADSR-Envelope
** [[Loop (music)|Loop]]ing
** Looping
** [[Reverberation|Digital reverb]]
** Digital reverb


All versions except CXD2941R require 4 MBits / 512 KBytes of external DRAM. CXD2941R has this RAM internally.
All versions except CXD2941R require 4 MBits / 512 KBytes of external DRAM. CXD2941R has this RAM internally.

Revision as of 11:47, 19 October 2021

Overview

Sound Processing Unit of the PlayStation.

  • Supports ADPCM sources with up to 24 channels
  • Sampling rate of up to 44.1 kHz
  • 512 KB RAM
  • PCM audio source
  • Supports MIDI sequencing
  • Digital effects include:
    • Pitch modulation
    • ADSR-Envelope
    • Looping
    • Digital reverb

All versions except CXD2941R require 4 MBits / 512 KBytes of external DRAM. CXD2941R has this RAM internally.

Revisions

Dedicated SPU

  • CXD2922Q (PU-7, PU-8 (only the first revision of PU-8, PU8-11)
  • CXD2925Q (PU-8 from -21 and up, PU-16, PU-18, PU-20)

DSP + CD-controller + CD-controller's RAM + SPU + audio-DAC

  • CXD2938Q (PU-22, PU-23, PM-41 up to PM-41-61)

DSP + CD-controller + CD-controller's RAM + SPU + SPU's RAM + audio-DAC

  • CXD2941R (PM-41-71, PM-41-82)