Timer ramp-up circuit and method for a sound masking system

Details Timer ramp-up circuit and method for a sound masking system Timer ramp-up circuit and method for a sound masking system

G - Physics

10

K

G10K 11/175 (2006.01) H03G 3/00 (2006.01) H03G 7/00 (2006.01) H04R 3/02 (2006.01)

Patent

CA 2436624

A volume ramp-up circuit for a sound masking system to ramp the volume of the sound masking output from an initial setting to a final volume setting over a ramp-up period. The sound masking system generates a volume setting signal for the ramp-up circuit. The volume ramp-up circuit generates a volume setting signal for the sound masking system based on the volume setting signal and an internally generated control signal. The control signal is stored in non-volatile memory. In the event of a power loss, the setting for the control signal is retrieved from the non-volatile memory and the volume ramp-up for the sound masking system is continued.

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