Hi Bill,
The concern I have is if the control of the OS fader would be OS agnostic.
Also, some multi input/output soundcards have a collection of controls --
some independent some not. Also, some soundcards have no hardware fader
control (the best ones).
The way WXJT-X works today seems quite adequate. It empowers the user to
have full control on the sound levels. The way the signal level meter works
is also very good as it measures the signal at the wxjt-x input in relation
to the ADC floor. This, in my view, is the best indicator to correctly set
the audio levels (at ~ 30 dB).
73, Edson PY2SDR
On Fri, Mar 3, 2017 at 2:49 PM, Bill Somerville <g4...@classdesign.com>
wrote:
> On 03/03/2017 15:38, Joe Taylor wrote:
> > 2. The slider should not affect the meter reading.
> >
> HI Joe & all,
>
> we have another enhancement possibility available to us. WSJT-X could
> set the operating system/driver fader to 0 dB as well. This may cause
> some consternation amongst users who have tweaked the levels because we
> have said the best place for the WSJT-X slider is in the middle. Those
> who have done this are probably doing more harm than if they had tweaked
> the WSJT-X slider to get to 30 dB on background noise.
>
> Another option is that we could also switch the WSJT-X level control to
> actually change the o/s / driver fader but note the value is in the
> range 0.0 to 1.0 and I assume that 1.0 is 0 dB FS so maybe only
> attenuation is available.
>
> Related to this, I have never been sure if the operating system level is
> more than just digital manipulation of the 16-bit PCM stream. For
> example it could have access to a 24-bit sample stream at a high sample
> rate on the input side (for example my laptop is capable of 192 kHz
> 24-bit audio input) and therefore has more resolution available than a
> gain control on a 16-bit sample stream would have.
>
> 73
> Bill
> G4WJS.
>
>
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