linuxaudio.org

On 08/02/2012 10:56 PM, Harry van Haaren wrote:

quoted text
> Thanks all for the replies, I've certainly learnt a lot.

>

> On Thu, Aug 2, 2012 at 9:11 PM, Tim Goetze  wrote:

>>

>> I think it's almost always a better idea to add an inaudible DC offset

>> or a square wave at the block interval or at Nyquist

>

>

> How small is inaudible? Or better yet, how small is way beyond inaudible,

> but enough to eliminate any denormals?

1e-20 ( ~= signal at -400db ) should be inaudible enough.
Denormals start < 1e-31 (~ -620db).
> The other problem is locating exactly where the problem exists: I'm using

quoted text
> Faust  to generate the reverb DSP code, so

> injecting DC offset would involve me tinkering with the reverb algorithm.

> I'd prefer leave it alone, but the outputs of the reverb can be DC-offseted

> easily. I don't think that would be enough... since the denormals could /

> would also exist internally in the reverb algo?

You should to add it to each sample on the input, before the signal

enters the effect.
ciao,

robin

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