Rob, Syd & others,
I no longer use Waves Q10 as I found it diabolically difficult t to
upgrade when I went from Mac OS9 to OSX. Hence I now use Wave Arts
TrackPlug 5 which was a breeze to install, compared with Q10, and
which also has brickwall filtering capacity. (Wave Arts is a
different company to Waves by the way).
Syd is still on Mac OS9 and is using Q10, and I am trying to remember
how I used to use it!
Yes indeed the Q10 telephone filter offers two 'brick wall' filters,
high pass and low pass. There are many other types of filter in the
Q10 set that can also be useful. Here I was referring only to the
telephone filter because Aussie sound guru Ed Slater had once
demonstrated its use to remove jet plane noise, and some of then
rushed out to get Q10 just for that one filter! Ed described how you
could remove the jet, then replace the low frequencies back into the
recording to make it sound natural.
Since that time, DINR and other filters have appeared, and may be
much better, but I am not experienced in using them.
Justin will have to describe what sort of natural sounds he has
recorded, and what is the strength of their signal, compared to the
jet noise.
Vicki Powys
Australia
On 11/04/2009, at 2:59 PM, Rob Danielson wrote:
> At 7:05 AM +1000 4/11/09, vickipowys wrote:
>> Syd and anyone interested,
>>
>> In Waves Q10 you would use the Telephone Filter (which is a 10 band
>> brick wall filter)
>
> I believe I'm following why the techniques you describe are working
> for you, Vicki. There could be some less apparent consistencies
> across the suggestions that have been made that are worth pointing
> out.
>
> Doesn't the telephone preset offers two "brick-wall" filters-- one
> would typically be a "high pass" filter and the other, a "low pass"
> filter as you describe? Its been a while since I've used Q10, could
> the other bands in this preset be parametric type?
>
> As I recall, Lyrebird calls are quite robust. I'm not sure what
> species Justin was recording but as the Lyrebird allows for low mic
> pre gain, the background sounds (including the jets) would be in
> lower in proportion and thus make rolling off as high as 500Hz much
> less audible. Another way of saying it is, there's not as much
> audible background ambience (at comfortable play back levels) in
> lyrebird recordings to become adversely affected by eliminating under
> 500Hz with EQ.
>
>
>> , 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!
>
> I might be wrong, but I believe Andrew is rolling off only under a
> 100-125Hz and using DINR in a manner more similar to parametric
> filtering than brick-wall filtering. Rob D.
>
>>
>> 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
>>>> <<vickipowys%40skymesh.com.au>>
>>>> Reply-To:
>>>> <naturerecordists%
>>>> 40yahoogroups.com>
>>>> Date: Fri, 10 Apr 2009 09:16:47 +1000
>>>> To:
>>>> <naturerecordists%
>>>> 40yahoogroups.com>
>>>> 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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