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Normally, frequency means the tendency for an event to occur repeatedly.

A high-frequency event would be something like breathing.

A low-frequency event would be something like breathing. If you were dead, that is.

In physics, the meaning stays.

The frequency of a tone, or vibration, is the rate at which air pressure varies.

It's measured in oscillations per second.

Hertz.

Like:

An extremely high frequency wave Hertz your ears more than a lower one.

Haha.

That's how I remember it.

Frequency is quite important, concerning both sound, and what we would call music.

It's the main factor in pitch.

Pitch also depends on the amplitude of a sound, moreso when the frequency is low.

Try playing a bass at different volumes.

The louder you play it, the lower it gets.

Not lower in volume of course.

Er.

You know what I mean.

Pitch can be changed in a vibrating string by length, density, and tension.

String instruments are adjusted by changing tension of the string, which is why violin players are constantly fiddling with their strings.

Someone should tell them that, musically, frequency specifics don't matter as much as their relations to another.

Depending on such things as age, gender, etc, humans can generally hear from 20 Hz to 20 kHz.

Most people can't even tell frequencies absolutely, anyway, which is why most scales are relatively based.

When two frequencies have a simple fraction ratio, like 1/2, they'll sound harmonic, known as consonant.

If the ratios is close but not a simple fraction, the composite waves will result in a steady pulsing instead of a single tone.

This is known as a vowel.

Haha.

It's actually known as a dissonant.

The lower the beat frequency, the more likely the interval to be a vowel.

Er.

Dissonant.

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