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Happy Holidays everyone!

cstanton

We're taking a break for the holidays at the element14 Community, and we hope everyone gets the opportunity to chill out and spend time how they feel comfortable doing so, whether that's business as usual for you, spending time with close ones and family or even, nothing at all!

We'll return in the new year with more activities, until then be sure to join in with Hey it's the Holidays! and post your projects Slight smile

Thanks for being here and being a part of the Community!

P.S. Here's a little reward if you happen to log in at Christmas.

It's beginning to feel a lot like Community

It's beginning to feel a lot like Community

Logged into the element14 Community at Christmas Time.

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  • Tinkering with some audio DSP on my Pico2.

    Frequency shifting was one of the first methods to help suppress/reduce oscillation/howling in PA systems.

    Rod Elliott has few detailed blogs on the subject:

    https://sound-au.com/articles/acoustic-feedback.htm 

    https://sound-au.com/project204.htm 

    I am using a Hilbert transform in the digital domain to achieve the same result

    image

    https://www.comm.utoronto.ca/~frank/notes/hilbert.pdf 

    image image

    A quick sample, I am twiddling the frequency shift between 0 Hz and 500 Hz

Reply

  • Tinkering with some audio DSP on my Pico2.

    Frequency shifting was one of the first methods to help suppress/reduce oscillation/howling in PA systems.

    Rod Elliott has few detailed blogs on the subject:

    https://sound-au.com/articles/acoustic-feedback.htm 

    https://sound-au.com/project204.htm 

    I am using a Hilbert transform in the digital domain to achieve the same result

    image

    https://www.comm.utoronto.ca/~frank/notes/hilbert.pdf 

    image image

    A quick sample, I am twiddling the frequency shift between 0 Hz and 500 Hz

Children
  • in reply to scottiebabe
    scottiebabe said:
    Frequency shifting was one of the first methods to help suppress/reduce oscillation/howling in PA systems.

    and still in use today  

    What is the Frequency Shifter?
    https://newsroom.sennheiser.com/what-is-the-frequency-shifter-54np89

  • in reply to scottiebabe
    scottiebabe said:
    Drop by the Dorchester with your own little widget

    I might need some more gold leaf to help make the little widget blend in...

  • in reply to scottiebabe

    A 200 Hz sine wave goes in a variable frequency sine wave comes out in real time.