[LAU] Mic correction with EQ

Fons Adriaensen fons at linuxaudio.org
Sat Apr 16 12:27:59 UTC 2016

On Sat, Apr 16, 2016 at 01:52:30PM +0200, Ffanci Silvain wrote:
> Hey hey everyone,
> recently I received an iphone recording of a public event. I'd like
> to prepare it for a friend, who couldn't be there. I was wondering,
> is it a good starting point to try to correct the frequency
> behaviour of that mic and if so, would anyone know a good EQ setup
> for an iphone 6 mic? I couldn't find anything online.
> Or is that mic nearly not as important as the effects of the room on
> any live recording?

In many cases the room will have more effect than the mics.
OTOH, very probably some rather invasive processing has already
been done by the iphone software.

If the recording was made using the internal mic(s) then
it will depend on the app used 

* which mic(s) were used (there are 3),
* if any of the following processing was done:
  automatic gain control, equalisation, speech enhancement,
  noise removal, dereverberation, maybe others.

All this stuff is geared at voice communication, so the
result for any other type of use could very well be quite

The only way to determine what can be done to improve the
recording is to listen... Maybe you could make a few minutes



A world of exhaustive, reliable metadata would be an utopia.
It's also a pipe-dream, founded on self-delusion, nerd hubris
and hysterically inflated market opportunities. (Cory Doctorow)

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