[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: Headphone sound pressure level?
At 04:18 +0100 14/7/11, Dr JI Alcantara wrote:
As far as the maximum output is concerned, this is a movable feast,
depending on whether you want to know when the transducers are
likely to burn out, or - more likely - when they start to produce
appreciable amounts of distortion so that they become unusable for
psychoacoustic tasks. The only way to be sure of the maximum usable
output level is to measure their output at a variety of sinusoidal
input frequencies of interest to you, and measure the total harmonic
You might want to measure the level of intermodulation distortion
between a pair of tones (at e.g. f2-f1, 2f1-f2, etc).
This is an important potential artifact in psychoacoustics, and you
can't really predict it from harmonic distortion.