Have a look at the BerliOS page and you'll see I haven't updated it since
2007, when i have to admit I was pretty terrible at programming. If anyone
wants to maintain phat, fill free to ask. I didn't think it was useful
without a clear use case of apps actually using it.
In other new, I've been bu
On 03/18/2013 08:58 PM, Loki Davison wrote:
Have a look at the BerliOS page and you'll see I haven't updated it
since 2007, when i have to admit I was pretty terrible at programming.
If anyone wants to maintain phat, fill free to ask. I didn't think it
was useful without a clear use case of apps
Hi again. Looking for any advice, tips, tricks, anecdotes etc.
I want to eliminate or reduce 'zipper' noise on volume changes.
So I'm looking at two techniques:
Zero-crossing / zero-value signal detection, and slew-rate limiting.
Code is almost done, almost ready to start testing each technique.
E
On Mon, Mar 18, 2013 at 5:50 PM, Tim E. Real wrote:
> Hi again. Looking for any advice, tips, tricks, anecdotes etc.
>
> I want to eliminate or reduce 'zipper' noise on volume changes.
> So I'm looking at two techniques:
> Zero-crossing / zero-value signal detection, and slew-rate limiting.
> Cod
On Mon, Mar 18, 2013 at 05:50:39PM -0400, Tim E. Real wrote:
> If I use a zero-crossing/zero-value detector and apply volume changes
> only at these safe points, that's a much more desirable 'perfect' system.
Zero crossings are not 'safe'. You avoid a discontinuity in the signal
but there will
On March 18, 2013 06:47:16 PM you wrote:
On Mon, Mar 18, 2013 at 5:50 PM, Tim E. Real wrote:
Hi again. Looking for any advice, tips, tricks, anecdotes etc.
I want to eliminate or reduce 'zipper' noise on volume changes.
So I'm looking at two techniques:
Zero-crossing / zero-value signal dete
On 18/03/13 "Tim E. Real" wrote:
>On March 18, 2013 06:47:16 PM you wrote:
>
>
>
>
>On Mon, Mar 18, 2013 at 5:50 PM, Tim E. Real
>wrote:
>
>Hi again. Looking for any advice, tips, tricks, anecdotes etc.
>
>I want to eliminate or reduce 'zipper' noise on volume changes.
>So I'm looking at two tech
On March 18, 2013 07:04:52 PM Tim E. Real wrote:
On March 18, 2013 06:47:16 PM you wrote:
On Mon, Mar 18, 2013 at 5:50 PM, Tim E. Real wrote:
Hi again. Looking for any advice, tips, tricks, anecdotes etc.
I want to eliminate or reduce 'zipper' noise on volume changes.
So I'm looking at two
On Mon, Mar 18, 2013 at 11:28:24PM +, James Morris wrote:
> I think the only time zero-crossings are any good is in hand-crafted
> cutting of (very) simple waveforms.
The only case where switching on zero-crossings makes sense is when
the gain control element can't perform a continuous chan
On Mon, Mar 18, 2013 at 07:43:32PM -0400, Tim E. Real wrote:
> Ah, I may have answered my own question when I said:
> "(One cannot simply wait for the current data value to be 'zero' because
> for example with a perfect square wave signal the 'current' value will never
> approach zero, hence t
On March 18, 2013 11:58:48 PM Fons Adriaensen wrote:
> On Mon, Mar 18, 2013 at 07:43:32PM -0400, Tim E. Real wrote:
> > Ah, I may have answered my own question when I said:
> > "(One cannot simply wait for the current data value to be 'zero' because
> >
> > for example with a perfect square wave
On Mon, Mar 18, 2013 at 11:45 PM, Fons Adriaensen wrote:
> A critically damped
> second order lowpass with a rise time of 30 ms or so will eliminate all
> audible artefacts. It's very low on CPU and you only need to run it while
> the gain is changing.
>
Although I understand the words & their me
[Harry van Haaren]
>On Mon, Mar 18, 2013 at 11:45 PM, Fons Adriaensen wrote:
>> A critically damped
>> second order lowpass with a rise time of 30 ms or so will eliminate all
>> audible artefacts. It's very low on CPU and you only need to run it while
>> the gain is changing.
>
>Although I understa
[Tim Goetze]
>[Harry van Haaren]
>>How is the "rise time" determined here?
>
>As a function of the filter's damping (zeta = 2*Q) and frequency:
>http://en.wikipedia.org/wiki/Rise_time
Sorry, zeta = 1 / (2*Q).
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On Tue, Mar 19, 2013 at 3:26 AM, Tim Goetze wrote:
> tradition (like RBJ's lovely cookbook at musicdsp) will ask for filter
> Q, which is 0.5 for critical damping.
>
Nice mention, checked out the code there, will play around with it a bit :)
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