DSP-G1 MIDI Synthesizer Chip

Make your own mini MIDI synth with DSP-G1 Voice Chip analog modeling synthesizer chip. It’s a tiny LPC810 chip programmed to read in MIDI streams and make music!

$14.95

In stock

SKU: dsp-G1 Category:

Description

The DSP-G1 synthesizer is a chip that contains a full analog modelling MIDI synthesizer in an 8-pin DIP package.

The chip can be used as a voice chip for an analog synthesizer, either as standalone receiving MIDI from a keyboard or other MIDI source, or connected to another MCU used for programming and patch storage.

The synth is five voice para-phonic with three  digitally controlled oscillators (DCO’s) per voice for a total of 15 oscillators, a +24dB resonant lowpass filter, two ADSR envelope generators and a LFO with sine and sample & hold waveform.

The DCO’s are TRI / PULSE / SAW morphing oscillators with range, detune and wrap parameters. The wrapping is a form of pulse width adjustment that works on any waveform.

The digitally controlled filter (DCF) is a digital model of a +24dB 4-pole filter and has a resonance setting that can be driven to near self oscillation. It has routing for ENV and LFO modulation.

Two envelope generators (ENV’s) are standard ADSR type and modulate the DCF and the digitally controlled amplifier (DCA).

One LFO is provided for DCF modulation and has TRI or S/H waveforms.

The output is 44.1KHz Sigma-Delta DAC and the synth parameters are controlled through 19 MIDI-CC parameters.

Specifications

Feature Summary 

15 DCO, 24db DCF, 2 ENV, 1 LFO
5 voice para-phonic voice structure
TTL MIDI Input
44.1KHz Delta-Sigma DAC
19 parameters controlled through MIDI-CC
3.3v power, 5v tolerant inputs

Technical Specifications 

DSP platform: NXP 60 DMIPS
Supply power: 2.7 – 3.6 volt
Supply current: ~3.2mA
MIDI input: 31250bps, 8 databits, 1 stopbit TTL 0 – 5volt level
Audio output: 44.1KHz Sigma-Delta DAC, 1 channel mono audio
Synthesis method: Virtual Analog Modeling synthesis using DSP technology
Polyphony: 5 voice para-phonic
DCOs: 3 oscillators per voice, morphable triangle/pulse/saw with wrap
DCF: +24db 4-pole lowpass filter with resonance
ENV: 2 ADSR envelope generators
LFO: Low frequency oscillator with triangle and sample & hold wave
MIDI support: Note on/off, supports running status, 19 MIDI-CC parameters
MIDI channels; Fixed receive on MIDI-CH 1

MIDI Implementation 

CUTOFF: CC#74
RESONANCE: CC#71
FILTER A: CC#82
FILTER D: CC#83
FILTER S: CC#28
FILTER R: CC#29
FILTER ENV M: CC#81
FILTER LFO M: CC#01
WAVEFORM: CC#76
WRAP: CC#04
RANGE: CC#21
DETUNE: CC#93
OSCENV A: CC#73
OSCENV D: CC#75
OSCENV S: CC#31
OSCENV R: CC#72
MASTERVOL: CC#07
LFORATE: CC#16
LFOWAVE: CC#20

 

(Due to continual product improvements, specifications are subject to change without notice.)

Product Documentation

Product Manual

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