Re: Recording from 24-bit sources

2.0.5 is now very old. The current 2.1.2 may be obtained here:
http://www.audacityteam.org/download .

Change to Waveform(dB) by clicking in the name of the track.

To see down to -145 dB in the vertical scale, you will also have
to change the Meter dB setting in Interface Preferences.

If you are on Windows, true 24-bit recording is only possible,
even in 2.1.2, if you choose Windows WASAPI host:
http://www.audacityteam.org/about/features/ .

When 2.1.3 is released (perhaps mid-March) it should also
support true 24-bit recording with Windows DirectSound host.

24-bit recording in Audacity with MME host is not currently
possible.


Gale Andrews


On 4 March 2017 at 14:06, Johnny Rosenberg <[email protected]> wrote:
> When recording with Audacity from a 24-bit digital source (in my case with
> S/PDIF), someone said that only 16 bits are recorded, padded with 8 zeroes.
> Is this true? I'm using Audacity 2.0.5.
>
> I should be able to answer my question myself by just zooming in vertically,
> but for some reason I can't zoom in enough. After zooming a few times
> nothing more happens. The text for the vertical scale is then graded -0.045
> – 0.045 in steps of 0.005, and each mm, when a channel is stretched all over
> my screen, seems so be a little less than 0.0005, which is approximately the
> size of LSB of an 11-bit signal. For 24-bits, LSB is approximately 59.6×10⁻⁹
> (0.0000000596).
>
> Is there a newer version that allows me to zoom in vertically as much as I
> want, at least so I'm able to see if a signal comes from a 16 or 24 bit
> source?
>
> And is there a version that lets me see the vertical scale in dB (0 dB=1.0)?
> Or is it possible in 2.0.5? At least I couldn't find out how.
>
>
> Kind regards
>
> Johnny Rosenberg

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