Re: arsclist Re: Thoughts...

["Steven Smolian" <smolians@xxxxxxxxx>]

I find careful use of the analog Packburn works fine on piano.

The basic difference between clicks and content is that the content includes
reverberation of the recording venue and clicks do not.  Castanets and
Miriam Makeba do not make impulse noises, at least under this definition.

Steve Smolian


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Steven Smolian    301-694-5134
Smolian Sound Studios
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Five or one or lifetime hoardings,
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----- Original Message -----
From: "Don Cox" <doncox@xxxxxxxxxxxxxx>
To: <ARSCLIST@xxxxxxxxxxxxxxxx>
Sent: Saturday, December 07, 2002 7:48 AM
Subject: Re: arsclist Re: Thoughts...


> On 07/12/02, Alyssa Ryvers wrote:
> > I am not a big fan of noise reduction either - you can't remove the
> > "noise" without changing the sound of the room it was recorded in. As
> > a recording engineer, my interest is to find the appropriate room; it
> > greatly effects the recording.
>
> > Today, when I took my "noise sample" from a recording I am mastering,
> > I am also sampling, in this "quiet spot", the room ambience. Noise and
> > room come down together, when I apply the noise reduction.
>
> Let's distnguish between random noise (hiss) and impulse noise (clicks).
> Both have an even frequency response, so frequency-based filtering (such
> as low pass filters) is no use.
>
> A 78 has a high level of hiss _and_ millions of clicks. The clicks occur
> at random times and last for a very short time (the better the pickup
> cartridge, the shorter the time).
>
> You can think of the signal as alternating between (hissy) music and
> clicks. The clicks take up less time than the music.
>
> In general, it should be possible to detect and remove the great
> majority of clicks without affecting the music or reverberation, because
> there is enough information about the music on either side of each click
> to allow restoration.
>
> Removing hiss without affecting reverberation or the dying away of a
> note on a piano is much harder. It can be done to a limited extent but
> with current technology, there are undesirable side effects. Where the
> original has only a little hiss, as with a studio quality analogue tape,
> it can be successful. Where there is a lot, as with 78s, you have a
> problem.
>
> Regards
> --
> Don Cox
> doncox@xxxxxxxxxxxxxx
>
> -
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