PlayRange is an option for Play and related functions which specifies what range of sound amplitude levels should be included.
All amplitudes are scaled so that the amplitude levels to be included lie within the range that can be output.
Amplitude levels outside the range specified are clipped.
The possible settings for PlayRange are: See the Mathematica book: Section 1.9.13.
See also: SampleDepth.
This plays a steadily rising tone, scaling the amplitude levels.
Evaluate the cell to see the graphic and hear the sound.