Re: What is line level audio?

Eeyore wrote:
What do you mean by an average anyway ? The dynamics of different styles of
music push the level allo ver the place from one moment to the next. The
concept of average isn't teriibly helpful. You need to avoid distorting the
loud passages.
=======================================================
I was interested in using the rms to model as the dc heating in the
voice coil as a speaker protector... I wrote some programs that graphed
a music wave, its avg, and its rms, and was surprised to see the rms
riding about 3dB above the avg. I expected the 'crest factor' to be
more variable with wave shape. The conclusion was: use a long time
constant avg (seconds), set the threshold 3dB below the power handling
capability of the speakers, dont let the clipping indicators stay on
too much.

.

Relevant Pages

  • Re: What is line level audio?
    ... I was interested in using the rms to model as the dc heating in the ... a music wave, its avg, and its rms, and was surprised to see the rms ... riding about 3dB above the avg. ... 3dB doesn't surprise me for modern music at all. ...
    (sci.electronics.basics)
  • Re: Estimating Speaker Power Rating
    ... I've written a couple programs that graph rms and avg of music, ... voltage is 3dB hotter than what you are measuring with the avgerager. ...
    (sci.electronics.basics)
  • Re: How does an RMS detector work?
    ... The RMS volts is the same as the DC volts that gives the same watts. ... for most of the music I've run thru my rms and avg calculator program, ...
    (sci.electronics.basics)
  • Re: sum-of-magnitudes estimate
    ... even RMS;-) sense? ... This is personal observation. ... its easier to calc the avg and add 2dB! ...
    (comp.dsp)