2 Volume Control

The volume control block applies a gain to the input signal and also provides headroom for further audio processing. The purpose of the volume gain is to be consistently loud across all music genres and movies. When used in combination with dynamic range compressors the control makes soft music sound loud – which is especially important when playing audio in noisy environments specially in small speakers. Volume control also supports soft-stepping. A change in volume is applied using a smooth time profile to eliminate any artifacts.

Figure 2-1 Volume Soft Stepping

Figure 2-2 Volume Control