Rob,
Good idea.
Jomar, would the following work?:
******
"The |anim:audio-level| attribute specifies the volume level during
playback. Its value is a number in the range 0 (muted) to 1 (maximum)."
Note: The actual volume level experienced by a user is application,
operating system and hardware dependent.
******
Hope you are looking forward to a great weekend!
Patrick
wrote:
> Patrick Durusau <> wrote on 03/13/2009 08:29:16 AM:
>
>
>
>> Yes, but your suggestion of "the range 0 (inaudible) to 1 (the current
>> system volume)." would mean that if I already have my "system" volume
>> set to 0 that there would be no sound at all, ever.
>>
>
> That is accurate.
>
> I think what is missing is that there are at least two components to the
> volume that an user actually hears. There is the volume as set by
> software (0-100%) and the volume set in the hardware, which also varies
> from 0-100% (except for very special systems which go up to 110%). And
> there is often an intermediate level, in the operating system, that can
> also vary the volume from 0-100%.
>
> The actual output volume is the product of all of these settings. So in
> fact if you muted the sound at the OS level or the hardware level, then
> you will hear no sound, even if the volume is set to 1 in the software.
>
> None of this is absolute measures, no dB's or anything like that. It is
> all relative.
>
> I'd just say the volume set by the software ranges from 0 (muted) to 1
> (maximum), knowing that "maximum" is a system-dependent volume. We can't
> make assurances greater than that since audio systems vary. We're not
> writing software for a THX certified playback device.
>
> Similarly, when we say an RGB value is (255,0,0) we cannot claim that the
> user will actually see pure red, since their monitor may not be calibrated
> correctly, they may be viewing with tinted artificial lighting, they may
> be color blind, etc. All we can state is the intent expressed by the
> output setting. With things like sounds and colors we cannot make claims
> on system capabilities or human perceptions.
>
> -Rob
>
>
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>
--
Patrick Durusau
Chair, V1 - US TAG to JTC 1/SC 34
Convener, JTC 1/SC 34/WG 3 (Topic Maps)
Editor, OpenDocument Format TC (OASIS), Project Editor ISO/IEC 26300
Co-Editor, ISO/IEC 13250-1, 13250-5 (Topic Maps)
