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Roland CP-40

 

 

 

Roland CP-40

info Country: Japan
Weight: 1 Kg
Dimensions: 284 x239 x50 mm
audio demo trend price : 70€
manual demo video comments

Roland CP-40 (1990)
Pitch to Midi Converter

 

This unit converts any monophonic signal like voice or guitar to Midi notes.

The CP-40 was part of the old Atari ST TENTRAX system along with the MC-500 II sequencer.

tech
tech

info CONVERTER main panel features a 7-segments display, a gain peak-meter, 2 sliders and 4 membrane buttons. The CP-40 originally came with a cheap dynamic microphone but you can use any others.
Front panel terminal connectors:
- audio signal input (impedance line / Mic) .

Back panel terminal connectors:
- Midi input and output
- impedance switch set
- Midi merge switch set (incoming Midi data are merged to out).

ac Power supply is a 9V external PSU -)+ any general AC/DC PSU can work (100mA are enough)


 

edit VOICE the CP-40 converts monophonic audio signals from microphone or line-level input sources to Midi signal in (quite) real-time.
The interface is really easy, just plug the instrument into the AUDIO input, then automatically the CP converts to Midi data to a module (or synth) - the unit shows the tracked note on the display.

 

diagram



editMIDI
the tracking system outputs the following message:
- pitch note
- pitchbender value
- Control Change 11 (expression).
Control change #11 is the dynamic / amplitude of the signal.


pitch



edit
EDIT the edit mode features 6 special functions:
- gain: sets the incoming signal level
- Midi channel: sets the Midi ouput channel (1-16)
- octave shift: amount by which transmitted notes message will be transposed (range +/-2 octaves)
- velocity expression: 5 modes to translate incoming amplitude to Midi velocity
- bend mode: how the CP translates the signal pitch fluctuation and how it will be transmitted to the pitch bend Midi signal
- threshold: determine the level in which the Midi note message will be generated (3 preset levels).

midi





edit LATENCY
the tracking time IS actually pretty slow.
According to different tests I made, there is about 10 ms of latency beween signal (using short attack and low threshold) and generated Midi datas.


latency test

 

edit RELATED FAMILY:

minisynthesizer 2

Fairlight voice tracker (1985) one of the first voice to Midi translator

Breakaway Vocalizer

Breakaway Vocalizer another harware converter

moon modular 522

Moon Modular 552 modular version

EMS pitch to voltage EMS pitch to voltage the ancestor :) converts signal to CV tension

 

 

effet VST PLUGIN / SAMPLED VERSION there is no official CP40 plugin VST version, however some similar commercial and free programs:

  name price demo
MIDImorphosis

-WIDI Audio To MIDI VST
-MIDImorphosis

-Melodyne
celemony

Commercial WIDI Audio To MIDI VST
WAVEMID -WAVEMID
-Synodeia 2

FREE VST

WAVEMID

 

 

demo AUDIO DEMO

demo demo1: pitch to midi, organ (right channel) is the audio input, Midi is on the right one.
demo femal voice tracking with pitch bender option
demo another femal voice tracking

 

audio demo



video VIDEO CLIP SELECTION

clip1 demo2  
pitch sax demo as modulation source  

minisynthesizer 2

 

 

manual
MANUAL

 

manual
-SERVICE MANUAL
-OS EPROM DUMP

 

cp40

 

Roland CP-40 FOR SALE:

moon modular 522

CHECK OUT EBAY OFFERS


 

cp40

 

 

cp40

cp40 logo cp40 serial analog board


manual

-quite rare
-usually cheap


manual

-latency
-no xlr
-display
-limited tracking
-obsolete

comment

REVIEW "Funny machine for basic experimentation. As tracker it is slow and most of the time not so precise."

 

 

COMMENTS

 

 

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Roland Cp40 1.5 out of 5 based on 12 ratings. price €50