[vlc-devel] karaoke filter

郭宇宏 yuhong.guo68 at gmail.com
Wed Apr 20 15:50:55 CEST 2011


Modify the patch according to all your suggests.

Thanks

2011/4/15 Juha Jeronen <juha.jeronen at jyu.fi>

> Hi,
>
> On 04/15/2011 02:25 PM, Steinar H. Gunderson wrote:
> > On Fri, Apr 15, 2011 at 07:16:04PM +0800, 郭宇宏 wrote:
> >>     for(i=0;i<len;i+=nch)
> >>     {
> >>         a[i] = (a[i] - a[i+1]) * 0.7;
> >>         a[i+1]=a[i];
> >>     }*
> > My guess is that this is really 1/sqrt(2), which makes sense from an
> energy
> > point of view (or at least would, if the channels were independent; if
> not,
> > it depends on the correlation), but can cause clipping.
>
> Ok. Thanks. It did look a lot like 1/sqrt(2) :)
>
> Maybe for float samples (if we support those), 1/sqrt(2) would make
> sense, and for integer (16-bit) samples, 0.5?
>
>  -J
>
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