In this video I do some DSP Phase shift processing with the Teensy 4.0. Some other DSP videos I have:
STM32 DSP: [ Ссылка ]
ESP32 DSP: [ Ссылка ]

Big shout out to Charlie Morris' channel for all the inspiration. Lots of great stuff on his channel
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The Teensy and the Audio Shield
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Correction: I meant to say "I2S" not I2C

Here's the Iowa Hills software site
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I am using the Hilbert Filter from this page
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Note I missed out a critical parameter in the Hilbert filter configuration and that is you have to put in the desired phase offset in the "Phase Add" field (i.e. +45 and -45)

Here's some DSP theory pages. The convolution algorithm
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A good reference source
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Finally the code and coefficients
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