1. Forum
  2. Usenet
  3. COMP.DSP

  • is there a name for setting weak amplitudes to zero?

    From Marcel Mueller@21:1/5 to All on Mon Dec 9 20:35:33 2019
    Am 07.12.19 um 00:51 schrieb pedro1492@lycos.com:
    Clipping is when you set a strong amplitude to some fixed limit.
    But what about the other end - when it is small, and those tiny
    amplitudes are replaced by zero?

    In Mathematica it is called "Chop". It is mainly used to get rid of
    round-off errors.


    Marcel

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From therationalpi@21:1/5 to All on Sun Dec 15 09:30:20 2019
    Clipping is when you set a strong amplitude to some fixed limit.
    But what about the other end - when it is small, and those tiny
    amplitudes are replaced by zero?

    "Gating" is the term I'd probably use, but I come from an audio
    background.

    ~Pi


    ---------------------------------------
    Posted through http://www.DSPRelated.com

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Steve Pope@21:1/5 to therationalpi on Sun Dec 15 20:33:50 2019
    therationalpi <140483@DSPRelated> wrote:

    Clipping is when you set a strong amplitude to some fixed limit.
    But what about the other end - when it is small, and those tiny
    amplitudes are replaced by zero?

    "Gating" is the term I'd probably use, but I come from an audio
    background.

    It can also be viewed as a special (degenerate) case of a downward expander.

    Steve

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)