Am Mittwoch, den 27.07.2011, 11:58 +0000 schrieb Fons Adriaensen:
> On Wed, Jul 27, 2011 at 01:19:07PM +0200, hermann wrote:
>
> > well, zita-at1 is a nice app, but as a simple tuner it's a bit overhead.
>
> Beh, 60k for the binary ?
>
> > Not at least, thanks to your famous library zita-resampler, gxtuner
> > needs ~1% CPU to indicate the tune and freq.
>
> How are you using it ? The last time I looked there was thig
> giant FFT used to interpolate the peak - *that* can certainly
> be done much more efficiently using resampling. And even that
> would be overkill - fitting a curve to the peak would do the
> trick as well (and is what zita-at1 does).
>
May you would like to review the source again, I'm still learning and be
far from perfect, and usually I'm open for suggestions and hints how to
improve what I try to do.
I break the tuner out for a user request, for nothing more.
And, well we use a downsample rate of 16
const int DOWNSAMPLE = 16;
m_sampleRate = sampleRate / DOWNSAMPLE;
resamp.setup(sampleRate, m_sampleRate, 1, 16);
for the overhead I didn't mean the mem usage or download size, like I
said, gxtuner use ~1% CPU witch isn't as bad I mean, zita-at1 needs the
double amount here.
kind regards
hermann
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