Monday, June 7, 2021

The Call of the Ibis

 The call of the ibis, summed up in a single picture:





Love them or hate them, the ibis must be responsible for countless ruined recordings.

According to Wikipedia:





What they don't mention is, these note have a glissando effect and are very loud, which in
turn creates loads of harmonics and can even overload recording equipment, causing clipping.

The ibis sound is then a perfect candidate to try some DSP on.
Let's make it even more difficult by having some music too.
The music has very simple notes, which makes for a good test and simple to hear
 if we change the "sound" or timbre of the notes in any way.

The "raw" recording:


I'm pretty pleased on how it turned out.
The dreaded call of the ibis is 99% gone and the timbre is unchanged.


Add some extra ambience and they are pretty much gone.


It wasn't easy, took a bit of time but the result is worth it.
Can the call of the ibis be removed every time?
Probably not, or at least not 100%, but at least it's worth a try.
Better than scrapping the whole recording.

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