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Playback Mode Summary

The deMIDulator has three playback modes:  

Polyphonic

Sustain

 and 

Monophonic

.

Aside from controlling playback behavior, this setting will also affect how the currently active 
waveform(Sine, Square or Sample) LED behaves.  The diagrams in section “Waveform Mode 
Summary” illustrate that in normal playback mode, only one LED is illuminated at any time to indicate 
the current waveform mode.  To indicate which Playback Mode is active, the currently illuminated 
waveform LED will either 

Glow Steadily

Blink Slowly

 or 

Blink Quickly.  

These behaviors are 

assigned as stated below.

[

Polyphonic

]

When in this mode:

The currently active waveform LED will 

Glow Steadily

Up to 4 MIDI notes may be played simultaneously

Modulation & Pitch values may be changed

Amplitude Attack / Release time envelopes are enabled

[

Sustain

]

When in this mode:

The currently active waveform LED will 

Blink Slowly

Up to 4 MIDI notes may be played simultaneously

Modulation & Pitch values 

are ignored

Amplitude Attack / Release time envelopes are enabled

Sustain mode is unique from the others in that certain characteristics become frozen when you 
enter this mode.  These characteristics are: 

active MIDI notes

MIDI

 

Pitch Wheel 

value and 

MIDI Modulation

 value.

This means that you can, for example:

1. Enter Polyphonic mode

2. Play a three-note chord on a MIDI keyboard

3. Optionally modify Pitch Wheel and/or Modulation values

4. Enter Sustain mode

5. Lift your fingers off of the keys

6. The notes will continue to play and be modified by whatever Pitch and 

Modulation values were active when Sustain Mode was entered

Note that Sustain mode is a polyphonic mode which means that 4 oscillators are available to 
play with.  If you were holding <4 notes when entering Sustain mode then you will have (4 - 
numberOfNotesYouWereHolding) oscillators to play with while the frozen notes continue to 
play.

deMIDulator v1.10 User Guide – document version 1.00

Page 7/17

Bad Handshake Electronics 2011

Summary of Contents for deMIDulator v1.10

Page 1: ...deMIDulator v1 10 User Guide 3K wordCount Version revision 1 00 deMIDulator v1 10 User Guide document version 1 00 Page 1 17 Bad Handshake Electronics 2011...

Page 2: ...mmary 5 Waveform Mode Selection 6 Playback Mode Summary 7 Playback Mode Selection 8 Recording a Sample Audio Loop Through Mode 9 Sample Mode Playback Triggering 10 Audio Input Sources 11 Other MIDI Im...

Page 3: ...specified by the author or licensor but not in any way that suggests that they endorse you or your use of the work Noncommercial You may not use this work for commercial purposes Share Alike If you a...

Page 4: ...sound generating arsenal This document will provide the information you need to successfully operate your v1 10 deMIDulator Overview of PCB Controls top view deMIDulator v1 10 User Guide document ver...

Page 5: ...volume can get very loud so make sure that the volume control is set to a low setting before turning the deMIDulator on Waveform Mode Summary The deMIDulator has three waveform output modes Sine wave...

Page 6: ...aveform Select button can only cycle the waveform mode in the direction of Sine Square Sample Sine MIDI Program Change can be used to cycle in either direction When a MIDI Program Change message is re...

Page 7: ...Blink Slowly Up to 4 MIDI notes may be played simultaneously Modulation Pitch values are ignored Amplitude Attack Release time envelopes are enabled Sustain mode is unique from the others in that cer...

Page 8: ...n mode Monophonic When in this mode The currently active waveform LED will Blink Quickly Only 1 MIDI note may be played at a time Modulation Pitch values may be changed Amplitude Attack Release time e...

Page 9: ...t Note that MIDI input is still processed while audio loop through is active After releasing this button in Sine and Square modes previous LED function will resume audio loop through will stop normal...

Page 10: ...hrase would then sound like I m just here I m just here I m just here I m just here I m just here I m just here I m just here You get it Sample re triggering is only active in Polyphonic mode When in...

Page 11: ...ols Aside from accepting a standard 3 conductor stereo headphone plug for audio output the headset jack also accepts a 4 conductor headset stereo audio microphone plug with the following pinout Pin Nu...

Page 12: ...sing the Modulation value introduces a proportional amount of distortion which is the result of simple hardware trickery Sometimes abandoning science yields pleasing results In Sample mode the modulat...

Page 13: ...messages will immediately begin transmitting via the MIDI output port See document mootLoaderTransmitterSpecification_v1_10 for more details Writing the firmware Writing your deMIDulator s firmware r...

Page 14: ...MIDI Implementation Chart deMIDulator v1 10 User Guide document version 1 00 Page 14 17 Bad Handshake Electronics 2011...

Page 15: ...m Off Yes No no DLS 1 Yes No no File Reference Yes No no Controller Destination Yes No no Key based Instrument Ctrl Yes No no Master Fine Coarse Tune Yes No no Other Universal System Exclusive no Manu...

Page 16: ...General Purpose Controller 3 MSB no 19 General Purpose Controller 4 MSB no 20 no 21 no 22 no 23 no 24 no 25 no 26 no 27 no 28 no 29 no 30 no 31 no 32 Bank Select LSB no 33 Modulation Wheel LSB no 34 B...

Page 17: ...ose Controller 5 no 81 General Purpose Controller 6 no 82 General Purpose Controller 7 no 83 General Purpose Controller 8 no 84 Portamento Control no 85 no 86 no 87 no 88 no 89 no 90 no 91 Effects 1 D...

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