Re: [FFADO-devel] ffadomixer scroll pane

[Jonathan W. <jw...@ph...>]

Hi Patrick

> > Further to this, the 2.0 branch from svn rev 1315 now has a first cut at
> > controls for these meters.  I can't test this myself since I don't have an
> > 896HD, so if you could put these through their paces and let me know what
> > works and what doesn't I would very much appreciate it.
> 
> I've finally gotten around to testing this.  I really like the new layout.

Thanks!

> Here's what I've noticed so far:
> 
> The Peakhold time doesn't work.  When I change it to any setting, I get this
> error on the console that I ran ffadomixer from:
> 
> setting /Mixer/Control/Meter_peakhold_time mix destination to 1
> Failed to set Discrete
> /org/ffado/Control/DeviceManager/0001f2000001e5d0/Mixer/Control/Meter_peakhold_time
> on server org.ffado.Control

Thanks for reporting.  Could you please try svn rev 1359?

> The Cliphold time, Meter source, and AES/EBU meter selections all work.

Excellent.

> The Phones assign works, but the Phones selection under the Mix output
> should technically only be available if Phones is selected in the Phones
> selection drop-down.  According to the manual, when you choose Phones for
> the Phones setting, this setting makes the headphone jack serve as its own
> independent output pair (except when running at 176.4 or 192 kHz).  As it is
> currently, if you select Phones under the Mix output, the Phones assign
> setting has no effect.  This is a minor issue and may be kludgy to make 100%
> correct, so I'm happy to live with it as is.

I'll look into this - it's actually a point of difference with other MOTUs.
On the Traveler the contents of the "phones" stream from the PC is always
delivered to the phones.  If you have other mixes assigned to phones as well
then they are mixed.

So let me get this straight.  On the 896HD, if any of the mix buses are
assigned to "phones" then the "phones assign" control is ignored.

> The Mix output selection works for all outputs.  I don't have ADAT, but when
> I enable ADAT and set the meter source to ADAT out, I can see the signal
> registering on the meters.  Same for AES/EBU.

Good.

> The Analog input settings group box should be disabled or gone for the MOTU
> 896HD.  These are controlled by a physical switch on the back of the unit.

Ok, I was wondering about that.  Leave it with me.

> > Amongst the captures you sent me was also mention of the sample rate
> > converter controls, which I will also add soon.  Could you clarify what the
> > settings of this actually refer to?  Is it allowing you to control the
> > sample rate converter's master clock, or something else, and what is the
> > sample rate converter connected to?  As far as I can tell there are 4
> > settings for this: "None", "AES/EBU in", "AES/EBU out slave to AES/EBU in"
> > and "AES/EBU out 2x".  What precisely do each of these do?  The third one
> > presumedly slaves the AES/EBU out to the AES/EBU in clock, but I'm not
> > certain what the "AES/EBU in" and "AES/EBU out 2x" are referring to.
> 
> Here is how I understand it:
> :
> I'm guessing the Rate Convert LEDs on the front panel of the device will
> indicate what clock rate is detected/generated when using Sample Rate
> Conversion.
> 
> Hope this helps.

It does - thanks for the explanations.

Regards
  jonathan