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Author Topic: Zoom’s 32-bit float m/s - Instamic Pro Plus C  (Read 176665 times)

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Offline chewed

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Re: Zoom’s 32-bit float m/s - Instamic Pro Plus C
« Reply #120 on: March 23, 2026, 06:10:11 AM »
Today I discovered the main disadvantage of such a small recording unit like the Instamic. After a day of recording on a train, in the station, by the river, in the city centre, I’ve just returned home looking forward to listening to the results only to find that the Instamic is no longer with me, it is lost  :(

That is unfortunate. Can we convince the people at Zoom/Instamic to make some sort of clip mount?

Offline meltycrayon

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Re: Zoom’s 32-bit float m/s - Instamic Pro Plus C
« Reply #121 on: March 23, 2026, 01:11:09 PM »
Today I discovered the main disadvantage of such a small recording unit like the Instamic. After a day of recording on a train, in the station, by the river, in the city centre, I’ve just returned home looking forward to listening to the results only to find that the Instamic is no longer with me, it is lost  :(

That is unfortunate. Can we convince the people at Zoom/Instamic to make some sort of clip mount?
Or findable via the app, like an Apple AirTag?

Offline Gutbucket

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Re: Zoom’s 32-bit float m/s - Instamic Pro Plus C
« Reply #122 on: March 24, 2026, 10:13:51 AM »
Any tips for the M/S mode, decoding with MSED how exactly works? Do I need to pan ever time?

MSED is a simple but multifunctional plugin that does more than just decode a Mid/Side signal to Left/Right. 

But using it for straight decoding to L/R is straight forward, just make sure the Mode button is set to "Decode", and input Mid to ch1 and Side to ch2.  You needn't use the panning controls or any others.  Adjust stereo width using the "Side" gain control.  Zero Side channel gain = mono.  Using more Side channel gain increases the stereo output width.

The panning controls are useful for recordings that need stereo balance correction. You can tweak placement of the mono center image using the Mid pan knob, and the left/right balance of the stereoized Side content using the Side pan knob.  And you can swap Left and Right channel outputs using the "S180" button, which inverts the polarity of the Side channel.

Those are pretty much the only controls you'll need to use regularly.
« Last Edit: March 24, 2026, 05:28:25 PM by Gutbucket »
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Offline lpmaskman

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Re: Zoom’s 32-bit float m/s - Instamic Pro Plus C
« Reply #123 on: March 24, 2026, 03:22:18 PM »
Any tips for the M/S mode, decoding with MSED how exactly works? Do I need to pan ever time?

MSED is a simple but multifunctional plugin that does more than just decode a Mid/Side signal to Left/Right. 

But using it for straight decoding to L/R is straight forward, just make sure the Mode button is set to "Decode", and input Mid to ch1 and Side to ch2.  You needn't use with the panning controls or any others.  Adjust stereo width using the "Side" gain control.  Zero Side channel gain = mono.  Using more Side channel gain increases the stereo output width.

The panning controls are useful for recordings that need stereo balance correction. You can tweak placement of the mono center image using the Mid pan knob, and the left/right balance of the stereoized Side content using the Side pan knob.  And you can swap Left and Right channel outputs using the "S180" button, which inverts the polarity of the Side channel.

Those are pretty much the only controls you'll need to use regularly.

I tried but even I set to decode, the left channel is still louder by default, this is why I panned the mid and side, also tried the volume levels but it was still strong on the left. I'm using Reaper DAW. Reaper's built in M/S decorder given me the same result, this is why I tried the Voxgeno VST.
Mics: AT853, ATM35, RODE Videomic Go, MIC-109, Panasonic WM-61A
Mic power: CA-9100, 3-wire battery box (homemade)
Recorders: Deity PR-2, Olympus LS-12, Zoom H2 (4 channel line input mod), Instamic Pro Plus C Stereo
Video/photo: Panasonic HC-V770, Panasonic HC-VX1, Sony RX10mkII, Sony RX100mkIV, Sony FDR-AX53, GoPro Hero4 Silver

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Offline Gutbucket

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Re: Zoom’s 32-bit float m/s - Instamic Pro Plus C
« Reply #124 on: March 24, 2026, 05:43:48 PM »
In that case the imbalance was already present in the Mid/Side recording, and the pan controls of MSED may be of some help in correcting it.  After the decode did it sound like L/R stereo, even though being overly biased toward the left side?

The Mid pan shifts/places the central mono content stuff, while the Side pan shifts the L/R stereo content.  You may need to play around with both to push the balance around to something closer to what you want.  Were you able get the result you wanted by using the pan controls?

For a correct, appropriately balanced Mid/Side recording you should only need to select decode mode and then adjust Side gain to taste.
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 for the Oddball Microphone Technique illustrated PDF booklet<< (note: Version 4 provided in individual sections rather than a single booklet)

Offline Ozpeter

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Re: Zoom’s 32-bit float m/s - Instamic Pro Plus C
« Reply #125 on: March 25, 2026, 10:51:18 PM »
The stereo image from mid side recording can be very sensitive to exactly where the mic was placed relative to the source and how accurately the mic was directed. Maybe the imbalance you are hearing is due to that. To check the device itself, you could for instance set it up carefully in front of your hifi, correctly centred and aligned, then record a mono playback, centred first, then slowly panned across with the hifi balance control. Check the replay on headphones.

It's worth mentioning in passing that MSED can also be used at one pass to convert any signal from L/R to M/S and back, manipulating width and balance as required. I guess the key difference between real M/S and M/S created from L/R is the polar patterns of the mics, when the centre of the mid mic would capture a fully on-mic sound from the centre of the soundfield.  A crossed pair captures the centre of the soundfield slightly off mic of course.

Offline lpmaskman

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Re: Zoom’s 32-bit float m/s - Instamic Pro Plus C
« Reply #126 on: March 26, 2026, 11:46:19 AM »
I placed it on the middle of my desk, about same lenght from both speakers and the stereo recording was nearly balanced, no noticable panning, but the M/S came out so weird on the left.
Mics: AT853, ATM35, RODE Videomic Go, MIC-109, Panasonic WM-61A
Mic power: CA-9100, 3-wire battery box (homemade)
Recorders: Deity PR-2, Olympus LS-12, Zoom H2 (4 channel line input mod), Instamic Pro Plus C Stereo
Video/photo: Panasonic HC-V770, Panasonic HC-VX1, Sony RX10mkII, Sony RX100mkIV, Sony FDR-AX53, GoPro Hero4 Silver

https://www.facebook.com/lawrencelivevids - Concert videography and photography
http://xdespisedkidx.bplaced.net/ - trade site

Offline Ozpeter

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Re: Zoom’s 32-bit float m/s - Instamic Pro Plus C
« Reply #127 on: March 27, 2026, 11:47:04 PM »
As memory serves me, M/S not correctly converted to L/R does sound left handed.  And that may happen if you actually record in A/B then feed it through MSED thinking you are converting M/S.  Are you using MSED and is it set to decode?  Unfortunately I'm not at home so can't be more specific as my system is far away and my memory is going downhill!

Offline mepaca

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Re: Zoom’s 32-bit float m/s - Instamic Pro Plus C
« Reply #128 on: March 28, 2026, 10:41:41 AM »
I placed it on the middle of my desk, about same lenght from both speakers and the stereo recording was nearly balanced, no noticable panning, but the M/S came out so weird on the left.

sounds like un decoded m/s to me

Offline Gutbucket

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Re: Zoom’s 32-bit float m/s - Instamic Pro Plus C
« Reply #129 on: March 30, 2026, 11:23:49 AM »
Standard L/R stereo playback of correctly recorded but undecoded M/S will reproduce the Mid channel content from the Left speaker / ear phone, and Side channel content from the Right.  For most recordings that will translate as sounding louder and more focused on the Left.
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 for the Oddball Microphone Technique illustrated PDF booklet<< (note: Version 4 provided in individual sections rather than a single booklet)

 

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