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2004-08-25, 01:14
> -----Original Message-----
> From: developers-bounces (AT) lists (DOT) slimdevices.com
> [mailto:developers-bounces (AT) lists (DOT) slimdevices.com] On Behalf
> Of Sean Adams
> Sent: 25 August 2004 07:10
> To: Slim Devices Developers
> Subject: Re: [Developers] Volume control range
>
>
> Good question actually. I can't remember for sure OTOH - it's
> been a while since I worked on this - but I think at max
> volume, the output should be identical in either mode.
> Certainly there will be no digital adjustment in either case.
>

Sean,

I find that the maximum output level when the digital output is fixed is
much lower than the output when it isn't. It certainly isn't identical.

R.
--
http://robinbowes.com

ron thigpen
2004-08-25, 09:17
robin-lists (AT) robinbowes (DOT) com wrote:

> I find that the maximum output level when the digital output is fixed is
> much lower than the output when it isn't. It certainly isn't identical.

Is there a reference standard voltage for Line Outs?

In other words: when playing a reference signal recorded at max gain,
and with the volume attenuator of the playback device set to -0.0dB,
what is the VAC that should be delivered to the output jacks?

I'd expect that there was some variation in what is actually delivered
in consumer devices, but I'd also expect that there was some accepted
nominal value. We should try to find what this is (or should be) and
work to get the SB analog outs to conform in both modes.

This would have the benefit of not only being consistent between SB
analog modes, but also between SB and other devices connected to an amp.
It's nice not to be able to maintain volume levels without having to
fiddle with the master volume too much when switching from source to
source.

I'm assuming there are also some consensus values for other points on
the attenuation curve that could serve as a rough guide for the other
levels.

--rt