Subject:Does anyone ever answer these @#$%^&Messages!!!!!!!!!!!!!!!!!!!!!!!!!!!

Posted by: Trumpet

Date:9/5/1999 8:05:00 AM

As I have stated in two earlier messages, I am new to
SF4.5c and am trying to filter out wind noise from outside
recordings. What is the best path to take. I am at your
mercy. Anyone that can help me will be a friend for life!

Subject:...to filter out wind noise from outside recordings.

Reply by: RickZ

Date:9/7/1999 7:23:00 AM

Douglas V. Sink wrote:
>>As I have stated in two earlier messages, I am new to
>>SF4.5c and am trying to filter out wind noise from outside
>>recordings. What is the best path to take. I am at your
>>mercy. Anyone that can help me will be a friend for life!

Hi Douglas,

I think you may be asking for the impossible. Unless a background
noise is very consistent, it's hard to imagine how to cancel it. If
it's in a frequency range out of the range of the target of your
recording, you may be able to apply EQ ? Personally, I've not had
very good luck trying to remove room noise, from A/C's etc, by using
EQ's. The side effects on the sound I've recorded are often more
annoying that the rumble I'm trying to get rid of.

I would think that outdoor wind noise would be quite sporadic, and
extremely difficult to cancel. May be better to try mic attachments
or something to prevent the wind noise from getting into your
recording in the first place ?

Regards,
Rick Z

Subject:Re: Does anyone ever answer these @#$%^&Messages!!!!!!!!!!!!!!!!!!!!!!!!!!!

Reply by: NotWithStupid

Date:9/7/1999 9:02:00 AM

The best solution is to have monitored the recording in the first
place and put a wind screen on the mic or reposition it.

Removing wind noise after the fact is extremely difficult since the
noise is not a constant tone that can be eq'd out. It depends a lot
on the character of the noise. You may be able to use an expander to
increase the difference between the quietest portions of the
recording (when only wind noise is present) and the loudest (when
program material overcomes the wind noise threshold) and then use a
noise gate to at least attenuate the quiet parts.

If the wind noise is loud and constant, then you may be able to do
some things with eq, but probably not a whole lot.

Good luck.

ps - Silence on the list is sometimes indicative of no one having a
good answer to your question!

Douglas V. Sink wrote:
>>As I have stated in two earlier messages, I am new to
>>SF4.5c and am trying to filter out wind noise from outside
>>recordings. What is the best path to take. I am at your
>>mercy. Anyone that can help me will be a friend for life!

Subject:Re: Does anyone ever answer these @#$%^&Messages!!!!!!!!!!!!!!!!!!!!!!!!!!!

Reply by: wundercodger

Date:9/13/1999 12:43:00 PM

Have you tried Sonic Foundry's "Noise Reduction" package? (No, I
don't work for SF, nor have any financial stake in the company...)

Over the weekend I used the plug-in (from within Sound Forge) to
remove ambient noise from a spoken-voice recording. The recording was
done on a "boom-box"-style cassette recorder, and the speaker was
about two feet away from the mic. Lots of ambient room noise. With
the Noise Reduction plug-in, I took a sample of the room noise, then
had the software remove that noise from the entire recording. Worked
beautifully, with almost negligible impact on the "real" signal (the
spoken voice).
This file is never going to sound ultra-hi-fi, given the conditions
of its origin, but I have managed to improve the sound quality
several hundred percent.
To try it with your "wind" noise, you need to have at least a couple
of seconds in your recording during which ONLY the wind-noise is
present, so that you can sample it for removal.
This may or may not work for you... wind-noise is likely to be a lot
less "regular" than the room noise I edited out of my file. But it
should be worth a try. EQ is definitely not the way to go, for
trying to get rid of wind.
Good luck!
--Ernie

Douglas V. Sink wrote:
>>As I have stated in two earlier messages, I am new to
>>SF4.5c and am trying to filter out wind noise from outside
>>recordings. What is the best path to take. I am at your
>>mercy. Anyone that can help me will be a friend for life!

Subject:Re: ...to filter out wind noise from outside recordings.

Reply by: Earle

Date:9/18/1999 8:33:00 PM

Doug,

If this is a hypothetical question (for a future recording), use a
thick pop filter on your mic. If the damage has been done, see if
you can find the frequency range of the wind noise (it's probably all
over the scale, though) and write it down. Use spectrum analysis.
Before you do anything to the recording, find a section that
contains only wind noise and get a noise print from the noise
reduction window. Do one pass at -10Db, get another print, and do a
second pass at -15Db. Keep the high pass filter @ 7000Hz and the
overlap @ 75%. Any more that that and you'll get that white noise
jingling in the background. Next go to the paragraphic EQ and use
the "Fletcher-Munson Curve" preset. Move the high pass down do 4db,
and the low pass down to 5db. If you actually had a spike in your
frequency range when you checked the spectrum analysis earlier
(probably won't) this is when you take it out. Adjust the octave
range according to the width of the spike.
That will get you about as far as you can go without damaging the
recording to much. It will still be there, but not as prominant.
Wind is evil, and it will usually curse the recording from start to
the fateful end. Good luck!

Jeff
Hideaway Audio



Rick Zentmeyer wrote:
>>Douglas V. Sink wrote:
>>>>As I have stated in two earlier messages, I am new to
>>>>SF4.5c and am trying to filter out wind noise from outside
>>>>recordings. What is the best path to take. I am at your
>>>>mercy. Anyone that can help me will be a friend for life!
>>
>>Hi Douglas,
>>
>>I think you may be asking for the impossible. Unless a background
>>noise is very consistent, it's hard to imagine how to cancel it.
If
>>it's in a frequency range out of the range of the target of your
>>recording, you may be able to apply EQ ? Personally, I've not had
>>very good luck trying to remove room noise, from A/C's etc, by
using
>>EQ's. The side effects on the sound I've recorded are often more
>>annoying that the rumble I'm trying to get rid of.
>>
>>I would think that outdoor wind noise would be quite sporadic, and
>>extremely difficult to cancel. May be better to try mic
attachments
>>or something to prevent the wind noise from getting into your
>>recording in the first place ?
>>
>>Regards,
>>Rick Z