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TOPIC: Switch to adapt bit depth of the audio monitoring chain [feature]

Re: Switch to adapt bit depth of the audio monitoring chain [feature] 3 weeks ago #193889

  • hugly
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  • 3 weeks ago
What is in 10 bit world 1023 +1 ? Exactly, overflow.

0dBFS in the 16-bit audio world ris epresented by hex FFFF.

What is FFFF +1 ? It is clipping.
It's better to travel well than to arrive...

Re: Switch to adapt bit depth of the audio monitoring chain [feature] 3 weeks ago #193890

hugly wrote:
David Rasberry wrote:
Wrong. 0dBfs is not a fixed reference.

In the digital signal chain, 0dBFS is fixed reference.


It is the clipping limit of the AD-DA hardware at any bit depth. It is different for 16 bit and 24 bit but the meter indication is the same for both. There is no fixed reference to analog audio levels inherent in a dBfs scale.
That is the point of dBfs (dB Full Scale): to always provide an absolute indication of maximum digital code value, not audio level. Audio levels are analog.
Any dB scale is always a measure of relative difference between an assigned reference value and the active signal value. The assigned reference value for 0dBfs is determined by your hardware setup.
For the Windows audio device that is determined by this setting:


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Last Edit: 3 weeks ago by David Rasberry.

Re: Switch to adapt bit depth of the audio monitoring chain [feature] 3 weeks ago #193902

  • hugly
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  • 3 weeks ago
In fact, it could be that all the trouble is caused by the wish of designers to create a mixer which is 'everything' without any mode switch, a PPM on a VU-meter scale, together with level meter calibration and gain adjustment on a single slider.

Unfortunately this unique concept, together with missing level meter scale, makes it quite troublesome to use them mixer. Poor documentation makes it not easier.
It's better to travel well than to arrive...
Last Edit: 3 weeks ago by hugly.
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