Syd and anyone interested,
In Waves Q10 you would use the Telephone Filter (which is a 10 band
brick wall filter), then adjust its shape keeping the wall at only
one end, and sliding that end up or down to the required frequency.
Use your ears to hear what is happening. I think you shift-click to
select a group of five filters so that they are all on (and unclick
the other five to turn them off), then mouse-slide the frequency
setting to where you want it.
If you can't figure it out, send me a screen shot of the Q10 window,
and I will tell you what to do.
I found with filtering my lyrebird that mimicry e.g. of Crimson
Rosellas, can sometimes be as low as 550 kHz, and beak snaps maybe
lower. I tried filtering the calls up to 700 kHz but they sounded
too thin and I thought 500 would be a safer bet. Andrew might care
to comment on whether his DINR filtering would retain beak snaps
below 500 Hz? Certainly Andrew is an absolute master at filtering,
much better than I am!
The Grey Shrike-thrush concert sounds good, yes send it, might be
good for Audiowings.
Vicki
On 10/04/2009, at 11:06 PM, Syd Curtis wrote:
> Hi Vicki,
>
> Am I right in assuming that Waves Q10 doesn't run on your
> present
> Mac?
>
> If so, can you remember enough of Waves to advise me on how to
> brick wall
> filter out everything above 500 Hz for adding the quiet background.
>
> BTW, somewhere I think I recall Norman filtering a lyrebird
> recording to get
> rid of noise by brick-walling up to 700 Hz - which agrees nicely
> with your
> advice of lyrebirds voices being above 700 Hz.
>
> There just might be an exception with Albert's. I seem to recall
> their
> imitating beak-snapping. My 1973 Tibro exotic pine plantation
> recordings
> included a beautiful concert from a Grey Shrike-thrush. (Would you
> like it
> for A/Wings? Or just to listen to yourself?)** Spoilt in one part by
> aircraft noise. And noise from my parabola, I think. I filtered
> it to 500
> Hz, forgetting that it included beak-snapping - and that did appear
> to be
> affected by the filtering.
>
>
> Best regards
>
> Syd
>
> ** Lasts 6 minutes, but you could use as little or much of it as
> you wanted,
> if there was a bit of space to be filled on an A/W CD.
>
>> From: vickipowys <>
>> Reply-To:
>> Date: Fri, 10 Apr 2009 09:16:47 +1000
>> To:
>> Subject: [Nature Recordists] Filtering out jet planes on a Mac
>> (was flight
>> path maps)
>>
>> And thanks to Ed Slater who first suggested the
>> brick wall filter method, and to someone on this list who recommended
>> TrackPlug5 as a replacement for Waves Q10.
>
>
>
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