A loud sound has a large amplitude, a high pitched sound has a high frequency. Musicians and scientists record and analyse sounds using wave traces. Sometimes you can see the source of the sound ...

Using high-frequency sound waves to make tunable optical filters ... the properties of an acoustic-optic grating, such as its pitch and strength, can be controlled by altering the frequency ...

When it comes to tools and techniques for creative sound design ... or try pairing pitch/frequency shifters working in ...