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Author Topic: Zoom F6 (32-bit float equipped)  (Read 140148 times)

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Offline jerryfreak

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Re: Zoom F6 (32-bit float equipped)
« Reply #360 on: September 14, 2020, 04:36:40 PM »
got a response from my zoom support guy, had some notes on USB mode only being 16-bit integer, and also said

Quote from: zoomtech
Overall, the engineers thought the findings were inconsistent, meaning it seemed like there were some additional variables in the testing conditions.

We would suggest for future tests that you use a recorded file or analog audio output with consistent sound to ensure the best results.

Do you have any additional information on the testing conditions, or any specific questions about your findings?

so i sent him all the test results above, including copying the THD plat from the review in the german magazine

we'll see what they come back with
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Offline Organfreak

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Re: Zoom F6 (32-bit float equipped)
« Reply #361 on: September 15, 2020, 04:04:26 AM »
@ Voltronic: I have listened to your recordings done with the line audio CM3. Did you also record these using the Zoom F6? It sounded really nice, what struck me most was the good stereo picture of the Concert Band recordings. I made a few recordings of our local Fanfare with omni mics hanging from the truss (~40 cm apart) but the stereo picture was not as good. Also your organ recording was OK, I did not miss the low end.
Line audio mics are surprisingly cheap. There is also an Omni mic from Line audio (the OM1). Can this mic be compared with the DPA 4090?

@ Jerryfreak: Attached are page 2, 3 and 4 of the German magazine test. First page was too large, but is just a picture of the device with conclusion. On page 4 it is confirmed that the F6 cannot handle +24 dBu.

Question: How to quote a section of a previous post in a reply post?.
Mics: Rode NT55, DPA 4090, Neumann KM143
Recorder: Zoom F6

Offline jerryfreak

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Re: Zoom F6 (32-bit float equipped)
« Reply #362 on: September 15, 2020, 04:38:52 AM »
click ‘quote’ in the upper right of the post you wish to quote, then trim out anything you don’t want
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Offline voltronic

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Re: Zoom F6 (32-bit float equipped)
« Reply #363 on: September 15, 2020, 06:28:20 AM »
@ Voltronic: I have listened to your recordings done with the line audio CM3. Did you also record these using the Zoom F6? It sounded really nice, what struck me most was the good stereo picture of the Concert Band recordings. I made a few recordings of our local Fanfare with omni mics hanging from the truss (~40 cm apart) but the stereo picture was not as good. Also your organ recording was OK, I did not miss the low end.
Line audio mics are surprisingly cheap. There is also an Omni mic from Line audio (the OM1). Can this mic be compared with the DPA 4090?

The organ recording used the F6.  The Concert Band tracks are older and used a Tascam DR-70D. 

If you are interested in the Line Audio mics, click the Team Line Audio link in my signature for a thread on them.  Yes, they are very inexpensive and punch far above their price point.
I am hitting my head against the walls, but the walls are giving way.
- Gustav Mahler

Acoustic Recording Techniques
Team Classical
Team Line Audio
Team DPA

Offline fotoralf.be

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Re: Zoom F6 (32-bit float equipped)
« Reply #364 on: September 16, 2020, 07:56:44 AM »
I'm trying to find out if TwistedWave can handle the 32 bit files from the F6. Could someone kindly send me a short 32 bit audio file, please?

Thanks in advance.

Ralf
Photography and industrial audioscapes from Western Europe. - Sound examples: http://aporee.org/maps/projects/fotoralf - Blog (German): http://the-real-fotoralf.blogspot.com

Offline voltronic

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Re: Zoom F6 (32-bit float equipped)
« Reply #365 on: September 16, 2020, 12:29:26 PM »
I'm trying to find out if TwistedWave can handle the 32 bit files from the F6. Could someone kindly send me a short 32 bit audio file, please?

Thanks in advance.

Ralf

Sound Devices has some sample files here:
https://www.sounddevices.com/sample-32-bit-float-and-24-bit-fixed-wav-files/
I am hitting my head against the walls, but the walls are giving way.
- Gustav Mahler

Acoustic Recording Techniques
Team Classical
Team Line Audio
Team DPA

Offline fotoralf.be

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Re: Zoom F6 (32-bit float equipped)
« Reply #366 on: September 16, 2020, 02:02:18 PM »
Quite amazing, thanks. And yes, TwistedWave works fine with the 32 bit data.

Ralf
Photography and industrial audioscapes from Western Europe. - Sound examples: http://aporee.org/maps/projects/fotoralf - Blog (German): http://the-real-fotoralf.blogspot.com

Offline justink

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Re: Zoom F6 (32-bit float equipped)
« Reply #367 on: September 21, 2020, 12:27:23 PM »
Okay, any audacity users in here?

How are you exporting 32 bit recorded files to 24bit in Audacity?  i need to figure out this new workflow...

my files i exported are still 32bit/48.
Mics:
DPA 4023 (Cardioid)
DPA 4028 (Subcardioid)
DPA 4018V (Supercardioid)
Earthworks TC25 (Omni) 

Pres and A/D's:
Grace Design Lunatec V3 (Oade ACM)
Edirol UA-5 (bm2p+ Mod)

Recorders:
Sound Devices MixPre10 II
Edirol R-44 (Oade CM)
Sony PCM‑M10

Offline darby

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Re: Zoom F6 (32-bit float equipped)
« Reply #368 on: September 21, 2020, 02:19:54 PM »
Okay, any audacity users in here?

How are you exporting 32 bit recorded files to 24bit in Audacity?  i need to figure out this new workflow...

my files i exported are still 32bit/48.

export as WAV
when you select WAV, there is a drop down that asks how you want your file type
mines defaults to 16-bit signed PCM, but 24-bit and 32-bit are also available 

Offline justink

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Re: Zoom F6 (32-bit float equipped)
« Reply #369 on: September 21, 2020, 03:00:36 PM »
Okay, any audacity users in here?

How are you exporting 32 bit recorded files to 24bit in Audacity?  i need to figure out this new workflow...

my files i exported are still 32bit/48.

export as WAV
when you select WAV, there is a drop down that asks how you want your file type
mines defaults to 16-bit signed PCM, but 24-bit and 32-bit are also available

Okay.  So "export as WAV".  Then "signed 24 bit" is what i need? 

is there no special dither or anything you need to apply?
Mics:
DPA 4023 (Cardioid)
DPA 4028 (Subcardioid)
DPA 4018V (Supercardioid)
Earthworks TC25 (Omni) 

Pres and A/D's:
Grace Design Lunatec V3 (Oade ACM)
Edirol UA-5 (bm2p+ Mod)

Recorders:
Sound Devices MixPre10 II
Edirol R-44 (Oade CM)
Sony PCM‑M10

Offline Organfreak

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Re: Zoom F6 (32-bit float equipped)
« Reply #370 on: September 24, 2020, 04:57:55 AM »
got a response from my zoom support guy, had some notes on USB mode only being 16-bit integer, and also said

Quote from: zoomtech
Overall, the engineers thought the findings were inconsistent, meaning it seemed like there were some additional variables in the testing conditions.

We would suggest for future tests that you use a recorded file or analog audio output with consistent sound to ensure the best results.

Do you have any additional information on the testing conditions, or any specific questions about your findings?

so i sent him all the test results above, including copying the THD plat from the review in the german magazine

we'll see what they come back with

No reply from Zoom received yet Jerryfreak?
Mics: Rode NT55, DPA 4090, Neumann KM143
Recorder: Zoom F6

Offline jerryfreak

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Re: Zoom F6 (32-bit float equipped)
« Reply #371 on: September 24, 2020, 06:04:36 AM »
correct

update: as of 9/25 they suspect my unit is defective and are are sending me a replacement. i will do another set of tests on this one, as well as the new one, perhaps side-by-side
« Last Edit: September 25, 2020, 03:52:32 PM by jerryfreak »
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Offline fotoralf.be

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Re: Zoom F6 (32-bit float equipped)
« Reply #372 on: September 24, 2020, 09:34:09 AM »
I wouldn't hold my breath.

Ralf
Photography and industrial audioscapes from Western Europe. - Sound examples: http://aporee.org/maps/projects/fotoralf - Blog (German): http://the-real-fotoralf.blogspot.com

Offline jerryfreak

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Re: Zoom F6 (32-bit float equipped)
« Reply #373 on: October 02, 2020, 08:01:52 PM »
im at work and just did a quick test with my DAC1, but the same low-frequency distortion is there with the replacement unit
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Offline Organfreak

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Re: Zoom F6 (32-bit float equipped)
« Reply #374 on: October 03, 2020, 11:28:53 AM »
got a response from my zoom support guy, had some notes on USB mode only being 16-bit integer, and also said

Quote from: zoomtech
Overall, the engineers thought the findings were inconsistent, meaning it seemed like there were some additional variables in the testing conditions.

We would suggest for future tests that you use a recorded file or analog audio output with consistent sound to ensure the best results.

Do you have any additional information on the testing conditions, or any specific questions about your findings?

so i sent him all the test results above, including copying the THD plat from the review in the german magazine

we'll see what they come back with

Would it be possible to record a test tone on an SD card and verify the amount of low frequency distortion via play-back (as suggested by Zoom above if I understand correctly)?
Mics: Rode NT55, DPA 4090, Neumann KM143
Recorder: Zoom F6

 

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