Controller scratch: fast oszilating speed, bad sound at rate = 1

[mixxxbot]

Reported by: daschuer
Date: 2013-03-20T07:04:06Z
Status: New
Importance: High
Launchpad Issue: lp1157570

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This seems to be similar to Bug #⁠1117806, but due to the complete different signal way it may depends on other issues.

[mixxxbot]

Commented by: Pegasus-RPG
Date: 2013-03-20T07:18:31Z

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This is why I'm in favor of having all scratch input data sources use one common processor instead of having three separate ones: https://blueprints.launchpad.net/mixxx/+spec/manipulation-consolidation

[mixxxbot]

Commented by: rryan
Date: 2015-12-31T16:17:23Z

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Is this still a problem? Could you provide a list of repro instructions?

[mixxxbot]

Commented by: daschuer
Date: 2016-01-02T22:26:40Z

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It still happens.

• Load a sine wave to a Deck
• Try to use the controller jog-wheel to transport the track with rate 1
• I hear a wobbling sound instead of a pitch matching the jog speed.

I assume this is due to the CPU load depending midi processing.
A solution might be filter that takes the midi timestamps into account.
A similar thing we did when dejerking the waveforms.