What Bit, and many of his era (sorry Bit) don't understand is, you're trying to keep the audio at the highest quality throughout the process. And in this day and era, there is no reason not to switch the 64bitfp on and leave it. And furthermore, there isn't any reason not to bounce out a 64bitfp master file that can be used to create 24bit masters - I wouldn't use 16 bit and don't - to create Mp3s that could be considered hi resolution because no dither and because the 64bitfp file hasn't gone through one reduction before being reduced again via Mp3. And Soundcloud accepts 64bit96k files. Mp3 has no bit depth limit. Yes we all listen with 16 but converters, most these days would listen with 24 bit because most new phones have 24bit, but it's all about resolution and not losing resolution. I think what happens is, if again you process audio files heavily or rely on the analogue emulation aesthetic - if say you bounced down to a 16 bit master file and then created an Mp3 or uploaded to SoundCloud - rather than hear the subtle nuances of emulated 2nd and 3rd harmonic distortion...it just becomes distortion. And it's the same at 24bit and whilst not as bad at 32 bit...you still hear distortion. All I can describe it as is, if you listen very carefully and headphones is there's a grainy mid frequency sound that you can't get rid of.
Look. The oldies around this forum, and I'm sorry Bit because I know you're a good guy who had helped many on this forum since I've been around on this forum, but the oldies are living in the past and worse holding western art music back. There is no need for a studio, a band or 1000s of dollars of equipment. And here is where the proof is, in regards to 64 bit fp...everything. I use Notion 6, which is a score editor and orchestral instrument. I used to stick with Bit's rules...or if you like the general rules of 24bit audio. I would bounce out the files as 24bit and then a few years ago 32 bit. I would then sit and add console emulation and some tape sat as well. It's one of the steps you take to make a wooden robotic sampled violin and smooth it over to add back some realism. The issue was, for the life of me I couldn't understand where the mid range tinny distortion was coming from. It ruined my mixed. Last year, and I can't remember why...I started recording those same Notion instruments into Sonar as 64bitfp via rewire. Gone was the distortion. Enough said.
Now yep, we're talking about master files, but think about it? All your processing is done at either 32bitfp or 64bitfp, depending on what switch you've pressed. What happens to all that processing at 64bitfp, when you bounce down to 24bit or 16bit...it gets squashed into the noise floor and dither is added. Now granted, 24 bit wave files should be the defacto format today, but if you're only using this file as your listening master file...then it will be fine. You lose some very subtle nuances of the 64bit file, but until fp DA converters come on line...its the best we can do. Now the problem is, and I said it above, but the problem is if you what to turn that 24bit file into an MP3 or a Soundcloud or indeed the master is going to be used in an MP4 for YouFool. Because you're squashing a file that has already been squashed. I can't remember if it's on Soundclouds do's and don'ts list but I read and only again recently - its recomend when you create a file for Soundcloud that's it's not heavily processed. Why? Because all the verbs, delays and emulation effects sound distorted. I always wondered why my mixes sounded so horrible after I uploaded to Soundcloud. Yes, in the past I might have been a crap mixer, not anymore...but it's because we're only just starting to work out the digital medium and format, and a lot of the ideas Bit and others on this forum are from the bad old days of digital. Where Bit was 100 percent on the money.
For proof, my website is 1331.space. I'm about to put my last AV sonata I completed last week up.
Ben