×

Variable sound system for audio devices

  • US 10,195,452 B2
  • Filed: 06/08/2017
  • Issued: 02/05/2019
  • Est. Priority Date: 10/29/2013
  • Status: Active Grant
First Claim
Patent Images

1. An audio device, comprising:

  • a microphone configured to capture ambient noise from an ambient sound environment;

    a sound library including a plurality of sets of sound files, each set of sound files having a plurality of spectrally different sound files;

    an amplifier coupled to a speaker, the amplifier having a selectable gain and being configured to output each of the plurality of spectrally different sound files over the speaker; and

    a processor configured with executable instructions which, when executed, cause the audio device to;

    detect sound level information of the ambient noise received via the microphone;

    perform sound spectrum analysis of the ambient noise;

    receive stored information containing spectral characteristics for a plurality of ambient sound environments from a sound level spectrum knowledge base;

    select a sound file from the sound library in response to at least one of the detected sound level information, sound spectrum analysis, and the spectral characteristics for one of the plurality of ambient sound environments;

    determine audio frequencies of the ambient noise within a critical bandwidth of the selected sound file based on psycho-acoustic principles of a human auditory system;

    alter the critical bandwidth of the selected sound file in response to the sound spectrum analysis of the ambient noise; and

    estimate an amount of gain to apply to the altered sound file in response to the sound level information of the ambient noise.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×