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Thread: Question about waveform modulated.

  1. #1

    Question about waveform modulated.

    I have noticed that waveform modulated uses exponential FM, however i am interested in achieving linear FM. Is there a way to either modify the waveform modulated object to support linear FM, or to instead process the signal before it reaches the FM input, so that even if the signal is interpreted as exponential, it produces a linear result. Linear fm is used in synths such as the yamaha dx7 as it allows for more accurate pitch tracking than exponential FM.

  2. #2
    Is phase modulation what i am looking for?

  3. #3
    Senior Member
    Join Date
    Jul 2020
    Posts
    398
    That would be a workaround, integrate the frequency to a phase shift. Using a log function on the frequency modulation should work, but is
    clunky. There's no reason that I can see that a linear FM mode couldn't be added.

  4. #4
    The code in waveform modulated is way beyond me , i will try figure out what is actually going on before trying to implement a different kind of FM. Do you know what rshift and rshift rounded are?

  5. #5
    Senior Member
    Join Date
    Jul 2020
    Posts
    398
    right shift with and without rounding to nearest. Bit operations that are fast divides by powers of two.

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