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On Mon, Jul 25, 2011 at 12:03 PM, Fons Adriaensen wrote:
> On Mon, Jul 25, 2011 at 11:43:14AM -0400, David Robillard wrote:
I'm interested in what you're saying about RMS metering. Could you give me
specifics or point me to a reference? I can't find anything by googling.
What sort of low pass filter is used for audio metering, for example?
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On Mon, Jul 25, 2011 at 12:03 PM, Fons Adriaense=
On Mon, Jul 25, 2011 at 11:43:14AM -0400,=
David Robillard wrote:
In all cases I know of the RMS value required for metering, dyn=
processing, etc. is *not* the average over a period, nor over any other
rectangular window. It is the result of applying a specific lowpass
filter on the squared samples, which one depends on the application.
This means that:
* period_start: can be useful.
* period_size: should be defined as the number of samples processed
=A0since the last event.
* The definition of RMS as you provide it should be dropped.
Linux-audio-dev mailing list
I'm interested in what you're saying about RMS metering.=A0 Could y=
me specifics or point me to a reference?=A0 I can't find anything by=
googling.=A0 What sort of low pass filter is used for audio metering, for e=