[sdiy] sound - physics and physiology

[brian]

malleus, incus, stapes!!!!!

I just listen to the music

Brian

-----Original Message-----
From: synth-diy-bounces at dropmix.xs4all.nl
[mailto:synth-diy-bounces at dropmix.xs4all.nl]On Behalf Of JH.
Sent: 22 August 2007 20:09
To: Scott; synth-diy at dropmix.xs4all.nl
Subject: Re: [sdiy] sound - physics and physiology


The middle ear has a built-in compressor (malleus, incus, stapes providing 
variable gain), and the inner ear and brain have additional functions to 
control the perception of sound level, frequency-dependent even.
Generally the dynamic range of the hearing is so large that you don't have 
much alternative to describing it with logarithmic scales.

Also, the decay of mechanical vibrations often goes with exponential law 
(damped oscillator: stored mechanical energy being transformed to heat via 
friction is proportional to amplitude, resulting in exponential decay).

JH.

----- Original Message ----- 
From: "Scott" <Scott at scottwick.com>
To: <synth-diy at dropmix.xs4all.nl>
Sent: Wednesday, August 22, 2007 8:20 PM
Subject: [sdiy] sound - physics and physiology


Does anyone care to get into the maybe deep subject about log vs linear
in audio?  Why do we use audio taper pots for audio.  Does it have to do
w/ the physics of the sound, or our perception of the sound?  If it has
to do w/ our perception of the sound, why do we perceive things
logarithmically (or is it exponentially?)

Let me know if anyone wants to tackle this discussion.. (Ive obviously
got too much time to sit and think today)



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