Patents by Inventor Colin McEnroe

Colin McEnroe has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Adaptive gain control
    Patent number: 9614486
    Abstract: A gain control system is responsive to a user gain setting and to an effective signal level to calculate and adaptively vary an output gain to avoid output clipping. The effective signal level is calculated by smoothing the energy of an input audio signal in accordance with selected attenuation factors. In times during which fast transient sounds are occurring, attenuation factors corresponding to relatively low levels of attenuation are selected. In times during which fast transient sounds are not detected, attenuation factors corresponding to relatively higher levels of attenuation are selected. The effective signal level is held at a constant level during periods of silence in order to avoid increasing the output gain during these periods. The output gain is calculated based on a comparison of the effective signal level to a compression threshold.
    Type: Grant
    Filed: December 30, 2015
    Date of Patent: April 4, 2017
    Assignee: Amazon Technologies, Inc.
    Inventors: Jun Yang, Philip Ryan Hilmes, Colin McEnroe, Chad G Seguin