[LAD] Re: Update of zita-at1

Robin Gareus <[email protected]>
Newsgroups gmane.linux.audio.devel
Message-ID <[email protected]>
On 2024-04-24 21:39, Fons Adriaensen wrote:
> On Tue, Apr 23, 2024 at 09:24:20PM +0200, Robin Gareus wrote:
>> On 2024-04-20 16:41, Fons Adriaensen wrote:
>>
>>> With the new logic deciding on forward / backward jumps, the
>>> low latency mode just came for free
>>
>> Except the latency in zita-at1 0.8.1 is still around ~20ms,
> 
> It will be 10 ms when selecting low latency mode.

At 48kHz sample-rate, Retuner::set_lowlat(true) sets Retuner::_latency 
to 1024.

>> compared 2ms when using the current plugin's "fast mode".
> 
> That must be BS. A typical male voice frequency is 125 Hz,
> 8 ms. So when the algorithm has to skip a cycle, will the
> latency change to -6 ms ??
> 
> Did anyone ever verify this ? I did a few minutes ago, by
> observing in and out on a scope.

Yes, and the documentation and tool-tip of the "fast" control reads
"Reduces latency by allowing initially uncorrected signal."

Probably not what you expect, but it is a nice hack that works well in 
real world live situations.

--
robin

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