Frequency-Dependence / Frequency-Independence

Some of sound’s effects upon the human are frequency-dependent.

For example, your own cranial cavity has some strong acoustical resonance modes (resonance frequencies)… which are dependent upon the size and shape of your skull… and upon the speed of sound within its contents (brain, brain fluid, etc). Creating strong acoustical resonance in your cranial cavity is very much frequency-dependent… as such resonance will only occur at your unique cranium’s resonance frequencies.

On the other hand, some of sound’s effects upon the human are frequency-independent.

For example, if someone claps loudly and unexpectedly… the sound catches your attention abruptly and draws it in a particular direction… toward the clapping hands. This effect is generally frequency-independent. A deep clap or high clap… either will catch your attention and draw it in that direction.

Thus… as some of sound’s effects are frequency-dependent… and some are frequency-independent… we are led to ask…

Within my Sound Work…

Which effects are frequency-dependent, and…

Which effects are frequency-independent?

Here’s a real-world kind of way to ask the question:

Suppose you were provided with a set of high quality tuning forks, bowls, or gongs… and these are of some random tuning that you do not know and are not allowed to test.

What therapeutic sound practices and results could be achieved with this randomly tuned set?

Which practices and results could not be achieved without knowledge of the tuning?

You, Dear Friends, are the Researchers you’ve been waiting for.
Your Sound Work is the Sound Laboratory.
Together, we can learn a great deal.

©2019 THOMAS ORR ANDERSON. ALL RIGHTS RESERVED