System and method of reducing power consumption for audio playback

  • US 9,425,747 B2
  • Filed: 03/03/2008
  • Issued: 08/23/2016
  • Est. Priority Date: 03/03/2008
  • Status: Active Grant
First Claim
Patent Images

1. An audio system, comprising:

  • an audio amplifier adapted to amplify a first analog audio signal to generate a second analog audio signal;

    a power supply adapted to supply power to the audio amplifier;

    an adjustable volume control module adapted to generate a volume level signal indicating a volume level for the second analog audio signal; and

    a control module adapted to control an amount of power delivered by the power supply to the audio amplifier, wherein the power to the audio amplifier being differently modulated depending on whether the volume level signal is above or below a predetermined threshold.

View all claims

    Thank you for your feedback