# Frequency - Amplitude

## Main Question or Discussion Point

Do higher frquencies have higher amplitude? Bats communicate at Ultasonic frequencies. DOes this mean the waves amplitude is very high?

## Answers and Replies

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Originally posted by anil
Do higher frquencies have higher amplitude?
Bats communicate at Ultasonic frequencies.
DOes this mean the waves amplitude is very high?
The amlitude of sound waves is independent of
their frequency. The amplitude determines
the strenght (volume) of the waves.

Live long and prosper.

For example, in an explosion, it produces a very loud bang. (ie large amplitude) The dull sound it produces indicates the sound wave has low frequency(pitch).

We can characterize a sine wave

completely with three quantities, frequency, amplitude and phase. They can be specified separately.

Originally posted by anil
Do higher frquencies have higher amplitude? Bats communicate at Ultasonic frequencies. DOes this mean the waves amplitude is very high?
frequency is 1/peroid
that mean how must the peroid in 1 second is the frequency
so the large frequency doesn't mean large amplitude