[gst-devel] gst-bad equalizer element

Christophe Dehais christophe.dehais at gmail.com
Mon Feb 12 00:38:04 CET 2007

well my apologies.
Forget the question about the partition of the spectrum. MIN_FREQ and
MAX_FREQ are documented in the .h and I figured out the division
scheme in the source. It seems the "freqs" field would even give the
array of actual frequencies, but it's not exported as a property (even
If documented as such).

The question about gains in dB remains


On 2/12/07, Christophe Dehais <christophe.dehais at gmail.com> wrote:
> Hi !
> The equalizer element has been ported to 0.10 and is currently in gst-bad CVS
> I'm making a plugin for rhythmbox that uses this element, however I
> don't understand precisely what the properties mean:
> - num-bands seems to specify the partition of the spectrum but what is
> the min and max frequency ? And I guess that it's not regularly
> divided, so what  scheme is used ?
> - band-values holds values in [-1.0; 1.0]. Is this mappable to
> something in decibels ?
> I browsed rapidly through the code, and I thought I was not good
> enough in signal theory to answer this whithout further research, so I
> would appreciate any help from someone who knows (maybe the author of
> the element ?)
> thanks,
> Christophe

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