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Author Topic: best tool to widen m10 internal mics narrow stereo files  (Read 2573 times)

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Offline Kevin T

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best tool to widen m10 internal mics narrow stereo files
« on: June 03, 2015, 10:42:59 AM »
any suggestions?

Offline Gutbucket

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Re: best tool to widen m10 internal mics narrow stereo files
« Reply #1 on: June 03, 2015, 12:26:26 PM »
A baffle between the internal omnis.  An appropriately trimmed piece of folded cardboard works well-



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Offline Ozpeter

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Re: best tool to widen m10 internal mics narrow stereo files
« Reply #2 on: June 03, 2015, 05:11:28 PM »
I suggested a VST effect a long time ago which used MS techniques but with eq, but I can't recall what it was...  maybe I'll try to think of an appropriate search string later.

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Re: best tool to widen m10 internal mics narrow stereo files
« Reply #3 on: June 03, 2015, 06:18:56 PM »
For something that has already been recorded, one could convert the Left/Right stereo to Mid/Side, and make a M/S ratio adjustment (bumping up the Side level and reducing the Mid) before converting back to L/R stereo again.  However, that's dependent on having sufficient stereo difference (Side) information available in the original file.  Many DAWs and wave editors have a "super-stereo" or "over-wide" option on the stereo panorama control. 

A more advanced variation on the above is EQing the Mid and Side components separately before converting back to L/R. That sounds like what you are suggesting, Peter.

There are stereo adjustment plugins which make use of this kind of M/S ratio adjustment and do the above conversion for you.  Likewise, many stereo EQ plugins now offer modes allowing direct adjustment of Mid and Side instead of Left and Right.  Any of those can do both tricks.  To use such an EQ mode for straight M/S ratio adjustment without any EQ change, set it to M/S mode and simply change the relative gains of each channel without specifying any EQ filtering.
musical volition > vibrations > voltages > numeric values > voltages > vibrations> virtual teleportation time-machine experience
Better recording made easy - >>Improved PAS table<< | Made excellent- >>click here to download the Oddball Microphone Technique illustrated PDF booklet<< (note: This is a 1st draft, now several years old and in need of revision!  Stay tuned)

Offline Ozpeter

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Re: best tool to widen m10 internal mics narrow stereo files
« Reply #4 on: June 05, 2015, 03:54:21 AM »
Here you go - from way back -

Quote
On the naturerecordists list I've seen a suggestion that the M10's stereo image can usefully be manipulated using separate eq of the mid and side.  For instance, reducing the level of the low frequencies in the centre of the M10 sound would also have the effect of increasing the proportion of side channel heard, thus making for a wider sound.  And at the same time one could boost the low frequencies in the side channel if the brighter sound isn't to your taste.

Here's a link to a VST plugin (free) which can be used to manipulate the eq of mid and side channels -

http://rekkerd.org/matthew-lindsay-ncl-phase-eq/

- you'd probably find that a basic MS widening VST would then not be required, but google for Voxengo MSED if you do still need a free one.

[Edit - if you don't want to read the manual for the Matthew Lindsay VST, simply select the "MS Enhancement" preset and you'll be impressed right away].

Just checked, and that VST (the Matthew Lindsay one) is still online.  The idea is that the close spacing of the M10 omnis means that low frequencies tend to clump to the centre while higher frequences are wider.  So by reducing the centre low frequencies, or boosting the side low frequencies, the skew in the stereo image can be corrected somewhat.
« Last Edit: June 05, 2015, 03:57:53 AM by Ozpeter »

 

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