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Re: Stereo Microphone Placement

From Anton Shepelev <anton.txt@gmail.com>
Newsgroups sci.physics.acoustics
Subject Re: Stereo Microphone Placement
Date 2017-01-13 16:52 +0300
Organization A noiseless patient Spider
Message-ID <20170113165222.2196f7ac5fc507a9ebf4a419@gmail.com> (permalink)
References (2 earlier) <fmmck-86038D.01120720082014@5ad64b5e.bb.sky.com> <lti7pd$o28$1@panix2.panix.com> <fmmck-939303.20023529082014@5ad64b5e.bb.sky.com> <20170113001914.2e0a121e4611d25bc2d5762a@gmail.com> <fmmck-6998E7.22191912012017@46.sub-75-242-165.myvzw.com>

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Fred McKenzie:

> Needless to say, I am not a pro!

Neither am I.

> My  recordings are intended to be used by the Con-
> ductor and a few key Musicians to analyze the per-
> formance.

I  should  say that the conductor and performers are
more critical audience than the layman listener  and
usually have a more wholesome taste and criterii.

If  they  are  satisfied  with  your work it must be
good.

> The H4N recorder is  configured  to  automatically
> set the recording level.  As the concert progress-
> es, the level gradually gets lower.  I use "Audac-
> ity"  to  separate  each piece, and then use it to
> amplify each  to  approximately  the  same  level,
> sometimes more than 10 DB.

So  the  level is set automatically at the beginning
only?  I simply ask the musician to play the loudest
part  and adjust my controls for that.  Does the H4N
use analog or digital attenuation?  The latter is  a
bad idea.

I too have used Audacity for simple editing.  If you
have to amplify by 10 db then you  are  using  about
30% of the recorder's dynamic range, but if the con-
cert is one indivisible programme it is  all  right.
Otherwise, I should adjust the levels for every com-
position.

> Before separating pieces, the .WAV recordings  run
> about  2 GB per hour.  So unprocessed and/or loss-
> less fragments would be too big for my limited in-
> ternet access!

That  must  be a high-definition format.  Three min-
utes of CD audio take about 30 Mb in WAV  and  about
half that space in the lossless format FLAC.

Here's  a  recording  that  made using the A-B tech-
nique:

   https://soundcloud.com/anton-shepelev/honey-dont-cover

It lasts 2:14 and weights only 12 Mb in FLAC.

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Thread

Re: Stereo Microphone Placement Anton Shepelev <anton.txt@gmail.com> - 2017-01-13 00:19 +0300
  Re: Stereo Microphone Placement Fred McKenzie <fmmck@aol.com> - 2017-01-12 22:19 -0500
    Re: Stereo Microphone Placement Anton Shepelev <anton.txt@gmail.com> - 2017-01-13 16:52 +0300
      Re: Stereo Microphone Placement Anton Shepelev <anton.txt@gmail.com> - 2017-01-13 18:10 +0300
      Re: Stereo Microphone Placement Fred McKenzie <fmmck@aol.com> - 2017-01-13 11:44 -0500
        Re: Stereo Microphone Placement Anton Shepelev <anton.txt@gmail.com> - 2017-01-14 01:30 +0300

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