ECE4450 L26: Sallen-Key Filters & the Korg MS-20 VCF (Analog Circuits for Music Synthesis)
Автор: Lantertronics
Загружено: 2021-04-26
Просмотров: 10621
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MAJOR CORRECTIONS: 1) In the schematic shown at 13:45 and again at 28:37, the inputs of the first OTA need to be switched. The positive input should be grounded and the other connections should be going to the negative input. 2) Around the 12:15 mark, I switch feedback paths so that they're taken from the output of the buffers instead of the input. This only works for the SECOND OTA output, since the current from the OTA is going through Cg. I should have left the FIRST OTA alone, since the current from the OTA needs to go through Cf. The error persists through the 14:35 mark, and appears again at 28:37.
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I recorded this during the Spring 2021 offering of ECE4450: Analog Circuits for Music Synthesis, but this material will likely be appropriate for future offerings as well.
Be sure to check out Alex Ball's amazing Daft Punk synth tutorial, featuring the Korg MS-20: • Daft Punk Synth Tutorial
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