Audacity Forum

How do you know that the "difference" isn't due to Noise Reduction working better at the lower sample rate? The reason why this is probably the case, is that the frequency band of the noise profile are much narrower (more specific) at lower sample rates. And here comes my subjectivity, because on l...

32-bit float has a dynamic range of more than 1000 dB. That's around 100000000000000000000000000000000000000000000000000 times more than the RME ADI 2 Pro. I am aware of that. Still, somehow the noise floor on 64-bit WAV recording is lower for some reason and SNR is better. I'll get a few screensho...

Can you demonstrate that benefit? I don't see any improvement in noise reduction or time stretching. Try the following: Record at the highest sample rate possible Use SoX to resample the recording file with high quality settings, then do the following on two files separately Select the same region ...

64-bit would be possible, as would 128-bit, 256-bit, 512-bit, 1024-bit.... Question: At what point do you stop? Right now, at 64-bit float since I need Audacity's noise reduction and I'd prefer to have 64-bit workflow for now :D. But seriously though, in the future we might have super awesome pract...

It makes a difference when applying any sort of correction that would benefit from high sample rate (noise reduction, time stretching etc.) But once I have a clear signal, I'd downconvert to 192 kHz because accoridng to spectrum analysis, my microphone+preamp doesn't record anything past 40kHz that ...

Agree on that.

I actually tried Reaper out and when everything is set to 64 bit, the 32-bit test passes on the device, so I'll be working mostly with Reaper. Would adding 64 bit float be a massive scale re-write as well?

versusliveact wrote: ↑

Wed Nov 27, 2019 1:04 pm

I know it is not a solution but You can download and try Reaper software for free and You can test the record.

Yep. It does work and it passes 32-bit test. Thanks

It is 32-bit. They mention it in the manual and the stream on macOS is 32-bit int. They also use 32-bit int DAC chips.

For me, it's about bit-perfect recording and playback. I know that there's little point in it with the SNR, but it's basically a nice-to-have for me.

1) Have you tried recording at 768 kHz with other software? Does it work at 768 kHz in other software? 2) Does it matter? Do you really need to use higher than 96 kHz? 1) Not really, because I'd have to buy that piece of software, but I know that playback works at this SR by testing on Mac. However...

First things first, I'm very grateful that Audacity exists

However, I noticed that it lacks 32-bit integer support for recording and playback which makes bit-perfect recording and playback on my RME ADI 2 Pro FS impossible. Can this be added?