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24 bit Recordings ???

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24 bit Recordings ???

Postby pianoworldstage » Thu Jul 30, 2020 3:53 pm

Hi

Would a 24 bit sample recording still be recognisable after being exported to 16 bit ?

Example, if using the CFX Concert grand piano sample library which samples were recorded at 24 bit, and one was to record a solo piano project via MIDI, then export to audio at 16 bit. Would that recording still retain any high quality resolution ?

The aggregator I'll be using states they only accept 16 bit files. If recording using 24 bit samples, then exporting to 16 bit, would that qualify as a 16 bit file ?

Sorry, new to this concept.
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Re: 24 bit Recordings ???

Postby Hugh Robjohns » Thu Jul 30, 2020 4:00 pm

pianoworldstage wrote:Would a 24 bit sample recording still be recognisable after being exported to 16 bit ?

A 24 bit sample would still be recognised after exporting to 8 bits... or even 3 bits, if the word-length reduction is performed with the correct dithering process.

A 16 bit format has a higher noise floor than a 24 bit format, but if the source sample's inherent noise floor is higher than either (as is often the case) then you won't notice any difference anyway!

Example, If using the CFX Concert grand piano sample library which samples were recorded at 24 bit, and one was to record a solo piano track, via MIDI, then export to audio at 16 bit. Would that recording still retain a high quality resolution ?

Firstly, MIDI is a control format, not an audio format. You can play your virtual piano via a master keyboard manually, or you can play it via MIDI instructions... but the sound quality will be the same regardless...

However, if you record your 24 bit samples, optimise the headroom, and then export to a 16 bit format with suitable dithering, I'm quite certain it will sound absolutely fine. People have been making CDs that way for over thirty years...
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Re: 24 bit Recordings ???

Postby desmond » Thu Jul 30, 2020 4:03 pm

When you listen to a piano recording on CD, does it sound terrible to you?

That's 16 bit resolution, and when done with appropriate care and expertise, the "resolution" is plenty good enough for listening to and enjoying.

Also - it would take just a few minutes to record something, render it out at 16-bit, and listen to the results to make sure you're happy with the results.
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Re: 24 bit Recordings ???

Postby pianoworldstage » Thu Jul 30, 2020 4:41 pm

The aggregator I'll be using states they only accept 16 bit files. If recording using 24 bit samples, then exporting to 16 bit, would that qualify as a 16 bit file ?

Sorry, new to this concept.
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Re: 24 bit Recordings ???

Postby desmond » Thu Jul 30, 2020 4:46 pm

pianoworldstage wrote:The aggregator I'll be using states they only accept 16 bit files. If recording using 24 bit samples, then exporting to 16 bit, would that qualify as a 16 bit file ?

Yes. :thumbup:
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Re: 24 bit Recordings ???

Postby pianoworldstage » Thu Jul 30, 2020 5:14 pm

Thank you both for your feedback, helpful.
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Re: 24 bit Recordings ???

Postby desmond » Thu Jul 30, 2020 5:21 pm

You're welcome!
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Re: 24 bit Recordings ???

Postby Martin Walker » Sat Aug 01, 2020 1:03 am

Just make sure you add dither noise when converting between 24-bit and 16-bit formats to optimise the dynamic range.


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