Patent ID: 9059670
Filing Date: 2015-06-16
Classification: H03G

Abstract:
1. A system for controlling the level of the audio signal that is provided by an audio source to headphones that are adapted to be worn by a user, the system comprising: circuitry that is operable to increase and decrease the level of the audio signal that is provided to the headphones, wherein the circuitry comprises first and second digital switches; and a controller, responsive to the audio signal provided by the audio source and adapted to control the circuitry that is operable to increase and decrease the level of the audio signal that is provided to the headphones, the controller automatically establishing a level of the audio signal that is provided to the headphones when the audio source is available to output an audio signal to the headphones; wherein the headphones comprise user-operated volume-control devices wired in parallel with the first and second digital switches, wherein the controller is further responsive to the user-operated volume control devices, to allow the user to control the balance or the audio signal provided to the headphones via manipulation of the volume-control devices.