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Comments
Looks nice. If I wasn't settled on the need for multiple device connectivity offered by the iConnectivity Audio 4c, I think this would be on my Birthday list.
I noticed in the fine-print that it's 24bit when used with iOS.
What’s the MSRP?
"Manufacturer's Suggested Retail Price" - a price you should NOT have to exceed but caveat emptor.
I saw it was around 250 British pounds
$199.99 with free shipping direct from Zoom here in the US.
pretty amazing, can't wait for this to trickle down into all new audio devices.
What 'DAWs' on iOS/iPadOS support recording 32-bit floats and allow +/- clip-gain for non-destructive normalize?
This Zoom device to me is equally interesting as the new Røde NT1 5th Gen with its built-in XLR & USB-C port with 32-bit float capability.
AUM is 32bit float recording but not a DAW
£215.01 on Amazon UK.
The iConnectivity Audio 4c remains top of my audio interface wishlist.
this forum is pretty knowledgeable but for the few people who wanna know a bit (no pun intended) more about 32bit float -
Why 32-bit Float is So Good
32-bit float recordings seem magical because clipped recordings over 0 dBFS can be fully recovered with zero distortion. See the below GIF for a demonstration of this “magic.”
Clipped 24-bit vs. 32-bit float recordings after lowering gain in post. Notice how the 24-bit file remains clipped but the 32-bit float file perfectly recovers the data above 0 dBFS.
Clipped 24-bit vs. 32-bit float recordings after lowering gain in post. Notice how the 24-bit file remains clipped but the 32-bit float file perfectly recovers the data above 0 dBFS.
Before with 16 and 24-bit audio, this was not possible. If your audio peaked above 0 dBFS, the captured audio was permanently distorted because these formats lack the ability to record any data over this threshold.
32-bit float can record audio data +770 dB above 0 dBFS and -758 dB below. This gives 32-bit float recordings an incomprehensible dynamic range of 1528 dB. This figure is hard to fully grasp because dynamic range between the quietest sound on Earth (an anechoic chamber) and the loudest sound possible (194 dB) is only 185 dB.
With over 1000 dB of headroom above the quietest and loudest sounds on Earth, clipping is impossible. Distorted audio above 0 dBFS can easily be recovered in post by attenuating the signal.
Here’s a great article from Sound Devices explaining this in greater detail: https://www.sounddevices.com/32-bit-float-files-explained/
PRO:
1528 dB of dynamic range
clipped audio can be recovered in post
can spend more time being creative and less time worrying about levels
CON:
takes up more storage space
not all DAWs can read it (yet)
Here's a video from Røde on 32-bit with recording with the NT1 5th Gen.
There's also one sample-file provided to play around with...
https://edge.rode.com/zip/page/2125/modules/7661/32-bit-float-example.zip
A very knowledgeable and interesting post, thank you for this, had no idea it was possible to salvage clipped audio, that's pretty amazing
yep, its really like magic to me.
small cavet....I believe the daw has to support 32 bit float on top of 32bit. in nuendo and cubase youll see options for both. I doubt any ipad app currently supports float... But i could be wrong
Cheers
This is very intriguing. No gain control on the box. It switches between two A-to-D converters depending on the level of the input signal. Note that not all apps have been verified to work with the Zoom technology. Worth reading if you’re interested:
Operation Manual
Confirmed Applications
AUM supports 32 bit float recording also
Nanostudio2 supports 32bit floating point sampling / playback / rendering too
Super interesting points points everyone. Thanks I learned a lot!
But note that this interface is only 24bit when used with iOS.
yeah a bit confusing as the manual states the audio device is compatible with some ios apps at 32 bit float.
apparently cubasis 3 works on ios 16.2...
if that is the case i don't see any reason why AUM wouldn't work either.
The OP-1 Field also does this. It uses 32-bit float for internal stuff, I believe, and I was surprised once when I reduced the gain of a clipped sample and it recovered just like in the animation here.
I’d be way more interested in it if it had 3 or 4 usb ports at the back for controllers. The whole 32bit float seems interesting but quite complicated in practice.
I could see this being more useful when recording multiple mic sources in a bigger studio where there’s more chance of one of the sources clipping and needing to retake the whole thing.
There‘s practically no chance of clipping a 24bit mic recording in a „bigger studio“.
Gain staging is among the most basic parts of the recording 101.
Imho it‘s just marketing (to have a supposedly „innovative“ feature).
Doesn‘t tell anything about sound.
Agreed, I was just trying to find usefulness for it in some scenario. Digital has a lot of tricks up it’s sleeve.
There’s no reason for recording so close to clipping anyway unless there’s a really extreme dynamic span in the source levels.
I’ve had a dig to try to work out what needs to occur for iOS to support 32bit float audio, so starting at the lowest level…
The USB Audio Class spec appears to define 32bit float audio, this would likely be the slowest thing to change so a great start!
Next the iOS class compliant audio driver, which apparently doesn’t float audio, likely because no hardware using the existed until recently. Apple have I believe been prompt to support class compliant audio so maybe they’ll add support?
Applications will need an update if they don’t currently write audio to storage as float. This should be close to trivial but will push data transfer 33% harder - I’d be very surprised to find any app not using float internally for DSP. (FWIW I was probably the last integer holdout in the VST plug-in world and my VAZ apps were discontinued many years ago now).
Agreed, though I do see value for recording in unpredictable circumstances I.e. field recording - having this in Zoom H-series recorders seems like a great idea! And of course it’s idiot-proofing.
d.> @MadGav said:
according to zoom manual cubasis 3 is already compatible at 32bit float with the audio device if you are running ios 16.2
anything that is idiot proof get my money! hihi and i was also thinking it's great for field recordings.
Nice!
Confirming that Cubasis on iOS actually supports 32 bit float. I use my Zoom F3 to record my classes at 32 bit float and then use Cubasis on iPad to normalise. The clipped portion of the audio is easily recovered and then use Hokusai to edit the audio after normalising it.