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?
is there a name for setting weak amplitudes to zero?
Started by ●December 6, 2019
Reply by ●December 6, 20192019-12-06
<pedro1492@lycos.com> 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?In audio, that is called a noise gate. In radio receivers, that is called a squelch. Steve
Reply by ●December 6, 20192019-12-06
On Sat, 7 Dec 2019 00:11:28 +0000 (UTC), spope384@gmail.com (Steve Pope) wrote:><pedro1492@lycos.com> 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? > >In audio, that is called a noise gate. > >In radio receivers, that is called a squelch. > >Steve^^Those. Another that is sometimes used is "sensitivity threshold".
Reply by ●December 7, 20192019-12-07
On 07/12/2019 00.51, pedro1492@lycos.com 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?"Dead zone", maybe? There is something here: https://en.wikipedia.org/wiki/Deadband The question is how to come out of the "dead zone", by jumping to the correct value or ramping up to it. bye, -- piergiorgio
Reply by ●December 8, 20192019-12-08
On Friday, December 6, 2019 at 3:51:27 PM UTC-8, pedr...@lycos.com 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?In Ohio it's called "putting the kabosh" on the small numbers.
Reply by ●December 9, 20192019-12-09
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
Reply by ●December 15, 20192019-12-15
>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
Reply by ●December 15, 20192019-12-15
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