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WarpMyMind • View topic - Microphone Breath Problems

Microphone Breath Problems

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Microphone Breath Problems

Postby whatsername100 » January 6th, 2009, 3:47 pm

I just recorded a file, but I had a problem; there were some times that I accidentally breathed into the microphone, and it was recorded as very loud, and distracting. Is there any way to fix this in the Audacity audio editor? Or some other program? I don't want to have to re-record the file.
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Postby cardigan » January 6th, 2009, 4:43 pm

Well, I don't know about Audacity in particular, but whenever I am recording a file and I make some kind of a mistake, I know it immediately after it has happened, and I stop the recording, go back one sentence or more in my script, edit out the faulty bit in the soundfile and continue the file where I left off. Can't you do that with Audacity? I can make perfect edits with Cool Edit Pro. When I'm done nobody can hear where the mistake was taken out.

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Postby whatsername100 » January 6th, 2009, 8:43 pm

Well, the problem is that I don't know where I made the breath until after I've recorded it. Isn't there some kind of noise removal function?
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Postby cardigan » January 6th, 2009, 11:00 pm

No, I don't think a noise removal would work. But if you make a note of where the unwanted noise is - at how many minutes into the file, then you should be able to open up the file, go to the spot and delete the thing - if you are not speaking at the same time. If you are speaking while making the unwanted noise, then - too bad.

(You have no idea how many times I've had to re-speak something because of things like that!). Be very careful to have your microphone in a way, so that you cannot in future blow down into it. Place it a bit further away from the mouth and beneath the mouth, so that you blow over it rather than blow into it!

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Postby whatthe75 » January 7th, 2009, 5:27 am

Or you can cheat like me and wrap a couple of sheets of tissue paper around the mic and it cuts out annoying breath sounds.
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Postby MN_FriendlyGuy » January 7th, 2009, 8:27 am

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Postby Django » January 7th, 2009, 5:17 pm

A couple of things that may help:

First, experiment with mic positioning. Try recording from further away from the mic, or at a slight angle to it. If this doesn't give you the warm speech sound you are after, try recording in a different room - they all have different acoustic properties.

Second, invest in a pop filter (or some pantyhose stretched over a coathanger if you're poor!). The pop filter should be placed roughly halfway between your mouth and the mic - this will help with plosives and sybillance.

Thirdly, if your audio software allows it, apply a gate filter to the recording - you will need to experiment to get the right level. Basically this eliminates sounds below (or above) a certain threshold, so helps with quiet background noise, as well as breath. Then you can tweak the eq and apply some gentle compression afterwards to warm the recording up a little.

As with all sound recording, don't be afraid to experiment and trust your ears - if it sounds god, it is good.

Hope that helps a bit.
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