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korg_wavedrum_midification

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korg_wavedrum_midification [2014/03/26 17:24] – linked to how-to chapter midisaronkorg_wavedrum_midification [2015/02/09 17:55] (current) – [MIDIfying the Wavedrum - Software] Updated Software download midisaron
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 ====MIDIfying the Wavedrum - Software==== ====MIDIfying the Wavedrum - Software====
-{{:wavedrum_midi:wavedrummidi_1_0.zip|Download the source code here}} This does not include the FFT stuff yet. I will share it here, but I do have to tidy it up first.LOL+{{:wavedrum_midi:wavedrummidi.zip|Download the source code here}} This does include the FFT stuff. Still haven't tidied it up.m(
 ==Capturing the head's and the rim's signals== ==Capturing the head's and the rim's signals==
 The ADC takes a sample every 50 microseconds. When idle, the head piezo, the rim piezos and the force sensor are sampled in turns. When a trigger on the head or on the rim is detected, i. e. a threshold is crossed, the force sensor is temporarily not sampled until 64 samples on the triggered channel (head or rim) are recorded and the event is processed. During that time the non-triggered channel (i. e. head if rim is triggered and vice versa) can still be triggered, so "simultaneous" triggers on head and rim are possible. Because the force sensor is not sampled while the head or rim signal is recorded, the sample rate here is 10 kHz. The ADC takes a sample every 50 microseconds. When idle, the head piezo, the rim piezos and the force sensor are sampled in turns. When a trigger on the head or on the rim is detected, i. e. a threshold is crossed, the force sensor is temporarily not sampled until 64 samples on the triggered channel (head or rim) are recorded and the event is processed. During that time the non-triggered channel (i. e. head if rim is triggered and vice versa) can still be triggered, so "simultaneous" triggers on head and rim are possible. Because the force sensor is not sampled while the head or rim signal is recorded, the sample rate here is 10 kHz.
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 ===MIDI=== ===MIDI===
 This picture shows how the signals from the sensors are processed and converted to MIDI messages. At the same time this is how the SoundDiver editor window looks like: This picture shows how the signals from the sensors are processed and converted to MIDI messages. At the same time this is how the SoundDiver editor window looks like:
 +
 {{:wavedrum_midi:sd_screenshot.jpg?600|Signal flow}} {{:wavedrum_midi:sd_screenshot.jpg?600|Signal flow}}
  
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 Various user-settable parameters can be transmitted to the software via MIDI Sysex messages. The bulk dump format is as follows: Various user-settable parameters can be transmitted to the software via MIDI Sysex messages. The bulk dump format is as follows:
  
-$F0 $7D $57 $44 $4D $49 $20 $02 $00 $00 //$0h $0l....$0h $0l// $F7+$F0 $7D $57 $44 $4D $49 $20 $02 $00 $00 //$0l $0h....$0l $0h// $F7
  
-The //$0h $0l....$0h $0l// part designates a block of 512 MIDI bytes. These represent 256 parameter bytes ((as in SYSEX_FORMAT 1 in tutorial 025)) which are listed in the table below (numbered from 0 to 255). Some parameters are 16-bit, in these cases the LSByte is sent first.\\+The //$0l $0h....$0l $0h// part designates a block of 512 MIDI bytes. These represent 256 parameter bytes ((as in SYSEX_FORMAT 1 in tutorial 025)) which are listed in the table below (numbered from 0 to 255). Some parameters are 16-bit, in these cases the LSByte is sent first.\\
 When the software receives such a message, the parameters are updated. The internal settings can be requested with a dump request: When the software receives such a message, the parameters are updated. The internal settings can be requested with a dump request:
  
korg_wavedrum_midification.1395854683.txt.gz · Last modified: 2014/03/26 17:24 by midisaron