Support and General Use > Theming and Appearance Customization
ONGOING DEFAULT THEME CONTEST!!!
ZincAlloy:
We do need an indicator for this. I just made a red volume slider icon. which targets need it?
scharkalvin:
This discussion about volume level in db makes me wonder about something.
Do most DMP devices adjust volume level by scaling the numbers to the D/A converter or do they adjust the gain of an amplifier (or attenuation stage) in the analog audio stages? If the former, then yes you can cause clipping by presenting numbers greater than 2**16. If the latter, than there is NO WAY that you can cause clipping unless the output of the D/A stage overdrives the audio chain.
In the latter case though the DB level would apply to what ... the gain of the amplifier chain?
Adjusting the volume by scaling the D/A value should cause more than clipping, it should also wreak the S/N ratio? Not to mention that this also depends on how the mp3, ogg, or other codec files were built.
ZincAlloy:
I think the volume is adjusted by changing an amplifier's gain. you sure can drive an amplifier into clipping...
scharkalvin:
--- Quote ---you sure can drive an amplifier into clipping
--- End quote ---
Yes, but if the volume indicator in DB shows the gain of the audio channel clipping will only happen if the signal out of the D/A over drives the amplifier. This won't happen for all source material. Is there a standard among players as to audio channel gain and signal output from the D/A stage? Probably not. (iPods seem to have the greatest signal output, at least in driving external amplifiers and headphones).
ZincAlloy:
a volume indicator can't indicate clipping. the clipping indicator of the meter can do this, but that one's for digital level.
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