Re: [Audacity-quality] Importing 16-bit AUP project into 3.0.0 set to 32-bit

[Peter S. <pet...@gm...>]

On Wed, Mar 31, 2021 at 11:24 PM Bill Wharrie <bi...@go...> wrote:

> I tried this on Mac 10.15.7 and Audacity 3.0.0
>
> Start 2.4.2
> Set Quality prefs to 16-bit
> Import some audio
> - note that the track is labeled as 16-bit
> Save the project
> Quit 2.4.2
> note the _data folder size
>
> Start 3.0.0
> Set Quality prefs to 32-bit float
> Import the previously saved 2.4.2 project
> - note that the track is labeled as 32-bit
> Save the project
> - note the project size - same as the 2.4.2 project but shouldn't it be
> twice as big?
> Amplify the track by 20 dB
> - since the track is 32-bit float, this should be recoverable
> Amplify the track by -20 dB
> - note that the track is not recovered - it appears that it is 16-bit even
> though labeled as 32-bit
>
> Importing 16-bit audio files into a 3.0.0 project with Quality prefs set
> to 32-bit properly converts the audio to 32-bit (I tried MP3 and AIF). So
> this appears to be an issue only when importing AUP projects.
>
> — Bill
>
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