Re: multiband xover

On Sat, February 9, 2013 9:14 am, John Rigg wrote:
> On Sat, February 9, 2013 8:00 am, Steve Harris wrote:
>> The existing algorithm uses the FFT data, which makes a poor x-over - I
>> can't remember exactly why, I think there might be ringing in the freq
>> domain or something?
>
> This could explain something which I noticed some time ago. I stopped
> using Jamin's multi-band compressor because it was doing something
> strange to the sound that I couldn't quite put my finger on.
>
> I know a lot of recording and mastering engineers won't use FIR filters
> for EQing audio because they find that it sounds unnatural due to
> pre-ringing. Could that be what's happening here?
>

Have you checked since the updated window code was added?

Kaiser-Bessel windows leave almost zero artefacts in the output signal.
They are mathematically as clean as it gets.

We tested here with some very expensive hardware and found the signal
quality to have been greatly improved since the upgrade.

According to expert advice the FFT algorithms in JAMin are mathematically
robust.



--
Patrick Shirkey
Boost Hardware Ltd

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