On Nov 19, 8:29*am, (Scott Dorsey) wrote:
In article , Randy Yates wrote:
One other question: is there a specification on the absolute maximum
signal voltage magnitude for a line level output?
No, and that's the problem. *The standards are average and not peak standards,
and so the amount of headroom required over average is not defined. *
For me, I'd like to see 20 dB over average level before clipping, maybe more.
Unfortunately a lot of "pro audio" gear does not do this.
I believe your questions are answered by IEC 60027-3, and by AES standard
AES-R2-1998. *Peak-reading standards are in AES-R7-2006.
--scott
The nice thing about standards is that there are so many of them.
I have posted a JPEG scan of a level scales card I picked up some time
ago a convention. It shows the relationship of 0.775Vrms to most
known standard scales.
See:
http://www.klay.com/klay/world_audio_levels.jpg
Text "Klay" to 50500 for contact info
-.- .-.. .- -.-- / .- - / -.- .-.. .- -.-- / -.. --- - / -.-. --- --
Yours truly,
Mr. Klay Anderson, D.A.,Q.B.E.