[MLA] Lossy encoder clipping

[Kevin Gross]

Can you clarify what you mean by "baked in"?

There are digital signals that "overload" DACs - a 0 dBFS digital square
wave, for example. DAC designers claim these are invalid signals (don't
respect Nyquist) so misbehavior on reconstruction is to be expected. They
have a point - digital clipping destroys information so the signal becomes
ambiguous. Mr. Bleidt may be looking at things from a similar angle. But we
don't need to even put a lossy coder in the mix to demonstrate that digital
clipping is bad for reproduction.

Kevin Gross - AVA Networks


On Sun, Oct 7, 2018 at 5:39 PM Ian Shepherd <ian at mastering-media.co.uk>
wrote:

>
> Hi All !
>
> My recent blog post about lossy encode clipping has had quiet a bit of
> attention:
>
> http://productionadvice.co.uk/spotify-upload-true-peak/
>
> Including an email from Robert Bleidt @ Fraunhofer. He’s asking if I have
> specific examples of encodes that have “baked in” the clipping, because his
> position is that it shouldn’t happen, these days.
>
> I’d like to give him a helpful reply and I’ve experienced problems myself
> in the past with encoding from Logic and Audacity, for example, but the
> truth is I don’t have a collection of examples on hand to offer him.
>
> Do any of you have recent examples that I can point him at, or know for
> sure of current encoders that consistently have issues with extremely loud
> content ?
>
> Thanks for any suggestions,
>
> Ian
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