Motorboating

[zxcvbob]

No, not that kind of motorboating, but the audio distortion type.

(Now that I got your attention with the accurate but misleading title)  After being out of town for a week and a half, I'm catching up on editing the sermon MP3 files from my church and getting them posted to a public google-docs folder.  The one from last week has a low-pitched "chirp chirp chirp" with a fast rise time and slower decay that occurs a couple of times.  No idea what it's from, but it's in both stereo channels.  (I wonder if it picked up something from the ceiling fan)  I'm trying to figure out how to filter it out using Audacity.  If I could just clip it to the level of the speech that would help quite a bit, but I don't see any way to do that.  Also didn't see anything useful in the noise filtering options. 

Any suggestions?  BTW, the file has a bit rate of 128kbps and a sample rate of 44 khz, I haven't downsampled it yet -- not sure if that matters.

[freakazoid]

I feel deceived. 

[charby]

I feel deceived. 

Here you go.. Make sure you listen to the whole thing.

http://www.youtube.com/watch?v=V0O0nzkESTI

[Boomhauer]

I feel deceived. 

Just go get you a big ol' gal and go to town then...

[Boomhauer]

Here you go.. Make sure you listen to the whole thing.

http://www.youtube.com/watch?v=V0O0nzkESTI

*expletive deleted* LITTLE BIG TOWN. *expletive deleted* *expletive deleted* *expletive deleted*


THANK GOD they stopped playing that song on the radio every other *expletive deleted* SONG. It only took them a year to finally drop it to "played a couple times a day" status.

[zxcvbob]

I found an Audacity filter that didn't totally get rid of the noise but got rid of most of it; under the "Effect" menu, it's called "Hard Limiter".  I played with different clipping levels, and setting the dB limit to -20.0 cleaned it up pretty good without overly affecting the speech.

[Doggy Daddy]

Just delete the audio in those parts.  As long as you don't go over about 18.5 minutes you'll likely get away with it.

[lupinus]

*expletive deleted* LITTLE BIG TOWN. *expletive deleted* *expletive deleted* *expletive deleted*


THANK GOD they stopped playing that song on the radio every other *expletive deleted* SONG. It only took them a year to finally drop it to "played a couple times a day" status.

I know your pain. Everytime it came on the radio it took every ounce of self restraint I had to not shoot the radio.

[Regolith]

I know your pain. Everytime it came on the radio it took every ounce of self restraint I had to not shoot the radio.

I feel the same way about John Mellencamp's Small Town. That *expletive deleted*it is country posing as rock and it should get the *expletive deleted*ck off my rock station.

[Boomhauer]

I feel the same way about John Mellencamp's Small Town. That *expletive deleted* is country posing as rock and it should get the *expletive deleted* off my rock station.

I *expletive deleted*ing hate that song too so it needs to die and never be played again. Ever.

[Harold Tuttle]

cell phone ringers can induce audio distortions upon mic cabler

[230RN]

^ Good point.  My first cell phone's periodic "handshaking" with the nearest cellphone tower would come through my radio.  Maybe you could ask people to shut off their phones before coming in.

[charby]

I *expletive deleted* hate that song too so it needs to die and never be played again. Ever.

As I tell me wife when she hates the music I listen too. "That artist/band/whatever made more money during their time of popularity then either of use will make in several lifetimes."