Freesound Forums

I am increasingly being asked how I created that blimp correction/equaliser for my microphone.
If you attach a windjammer windscreen blimp or dead cat in front of the microphone, the characteristics of the sound change. It becomes duller.

If you are familiar with Audacity, for example, you can create a correction for your microphone. It is actually quite simple.

This is how I designed it:

1 Create a 2-second white noise file.

2 Play this file in front of your microphone without the blimp and record the graph, e.g. in Audacity. Use a good stereoset.

3 Play this file in front of your microphone with the blimp and record this graph as well.

Subtract the values in graphs 3 and 2 from each other for 500 Hz, 1 kHz, 2 kHz, 5 kHz, 10 kHz, 16 kHz.

Set the values in the equaliser.

And you're done.

this is how the equalizer for my microfoons look like in Audacity

https://drive.google.com/file/d/1901M737iP5R6RPI1uG21KhW1SheWLv9k/view

succes experimenting

klankbeeld wrote:
... Subtract the values in graphs 3 and 2 from each other ...

An EQ matching plugin could be used to generate the corrective EQ for the blimp,
rather than creating it manually.

So you add the same EQ Curve in post production? And is this usually the default inclusion? I think it is a worthy experiment in any case and it is surprising that the blimp eats so much.

I use this EQ setting as standard because I usually use the same microphone set.

inspire153 wrote:
So you add the same EQ Curve in post production? And is this usually the default inclusion? I think it is a worthy experiment in any case and it is surprising that the blimp eats so much.

And what company blimp do you use?

Rycote cyclone small with windjammer.
But I did the measurement with the older blimp and didn't adjust anything for the new blimp. It has simply become the 'klankbeelde' standard and I'm very happy with it.
I think this model will work fine for most people's blimps. If not, you will have to take the measurement yourself.

inspire153 wrote:
And what company blimp do you use?

Thank you. I’m using the Rycote Windshield Kit MiniCMIT and I’ve never actually measured it, but I’ll try to do a similar measurement myself.
I use it together with a Schoeps MiniCMIT GR, and so far I haven’t really applied any EQ correction in the high frequencies.

MiniCMIT + Rycote is a well-matched system where high-frequency compensation is not necessary by default, but I’ll try to measure it when I have some time.