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    Question about Teensy 4.1+Audio Shield / I2S Overclocking and EMI

    We did clip a ferrite onto the DC adapter cable at one point and that slightly (but not significantly) dampened the frequencies... That's interesting about the battery idea. I had brought a certified power supply (Boss PSA-120) thinking they'd want to see it with a typical power supply that the...
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    Question about Teensy 4.1+Audio Shield / I2S Overclocking and EMI

    Sorry I don’t have the best picture of the DUT (I will attempt to upload shortly) but these results were from the bare device with only the 9V DC adapter and without any peripheral cables (MIDI, audio, cv, headphone) attached. Each of these user-supplied optional cables could likely vary in...
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    Question about Teensy 4.1+Audio Shield / I2S Overclocking and EMI

    Hi there! I am building a synthesizer instrument using the Teensy 4.1 and Audio Shield, connected to each other via stacking headers and socketed into a PCB containing several potentiometer and button inputs and I2C peripherals (external ADC, DAC, OLED). I recently went to get an FCC Part 15 B...
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