A floating-point number from 0.0 to 1.0 returning the rate of the volume. 1.0 represents the most important value, that is, the Device or the AudioSession is at 100% volume. 0.0 means that the volume captures or renders no sound at all.
0.0
1.0
100%
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A floating-point number from
0.0to1.0returning the rate of the volume.1.0represents the most important value, that is, the Device or the AudioSession is at100%volume.0.0means that the volume captures or renders no sound at all.