Audio editing is the modification of already documented audio and recording would be the capturing process of audio usually through digital or analog mechanisms.

Geologic Timescale

The term audio frequency is a frequency of sound that a person can hear. It is the part of sound that controls pitch. The pitch of sound is measured by hertz.

You can transpose it. Not sure, but there may be devices that can do this.

You can change the pitch by using audacity.

selecting the audio and then "change pitch."

It is important to complete projects within an agreed timescale because it guarantees that the project will get done on time. Having a timescale to complete a project also allows workers to plan how they will accomplish the goal.