Patents by Inventor Udo Zölzer

Udo Zölzer 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).

  • Patent number: 10805725
    Abstract: An active noise cancellation system for reducing unwanted noise in a target area by attenuating a disturbance noise signal (d(n)), which is the remaining noise in the target area originated from an ambient noise signal (x(n)) present in the vicinity of the target area that is transferred to the target area via a main path described by a transfer function P(z)), the active noise cancellation system including a processing unit that implements an ANC-controller which is configured to provide a control signal (y?(n)) for controlling a speaker in the target area in order to generate an acoustic signal (y(n)) that destructively overlaps with the disturbance noise signal (d(n)) and thereby attenuates the same.
    Type: Grant
    Filed: June 25, 2019
    Date of Patent: October 13, 2020
    Assignee: Helmut-Schmidt-Universitaet Universitaet der Bundeswehr Hamburg
    Inventors: Piero Rivera Benois, Udo Zoelzer
  • Publication number: 20200007984
    Abstract: An active noise cancellation system for reducing unwanted noise in a target area by attenuating a disturbance noise signal (d(n)), which is the remaining noise in the target area originated from an ambient noise signal (x(n)) present in the vicinity of the target area that is transferred to the target area via a main path described by a transfer function P(z)), the active noise cancellation system including a processing unit that implements an ANC-controller which is configured to provide a control signal (y?(n)) for controlling a speaker in the target area in order to generate an acoustic signal (y(n)) that destructively overlaps with the disturbance noise signal (d(n)) and thereby attenuates the same.
    Type: Application
    Filed: June 25, 2019
    Publication date: January 2, 2020
    Inventors: Piero Rivera Benois, Udo Zoelzer
  • Patent number: 9820072
    Abstract: The invention relates to a method for generating a multichannel audio signal (600, 700) from a stereo audio signal (100, 200), having the following steps: ascertaining a first panning coefficient (310) and a second panning coefficient (320) of the stereo audio signal; ascertaining a direct signal (515) as well as a first surroundings signal (510) and a second surroundings signal (520) from the first audio signal and the second audio signal and from the first panning coefficient and the second panning coefficient; ascertaining a plurality of repanning coefficients (410, 415, 420) from the panning coefficients, each repanning coefficient of the plurality of repanning coefficients being assigned to an audio channel (580, 585, 590) of a plurality of audio channels of the multichannel audio signal; calculating each direct signal using each of the repanning coefficients of the plurality of repanning coefficients; and converting each audio channel into a playback signal (600, 700) of the multichannel audio signal, e
    Type: Grant
    Filed: August 29, 2013
    Date of Patent: November 14, 2017
    Assignees: HELMUT-SCHMIDT-UNIVERSITÄT UNIVERSITÄT DER BUNDESWEHR HAMBURG, HAMBURG INNOVATION GMBH
    Inventors: Martin Mieth, Udo Zölzer
  • Publication number: 20150334500
    Abstract: The invention relates to a method for generating a multichannel audio signal (600, 700) from a stereo audio signal (100, 200), having the following steps: ascertaining a first panning coefficient (310) and a second panning coefficient (320) of the stereo audio signal; ascertaining a direct signal (515) as well as a first surroundings signal (510) and a second surroundings signal (520) from the first audio signal and the second audio signal and from the first panning coefficient and the second panning coefficient; ascertaining a plurality of repanning coefficients (410, 415, 420) from the panning coefficients, each repanning coefficient of the plurality of repanning coefficients being assigned to an audio channel (580, 585, 590) of a plurality of audio channels of the multichannel audio signal; calculating each direct signal using each of the repanning coefficients of the plurality of repanning coefficients; and converting each audio channel into a playback signal (600, 700) of the multichannel audio signal, e
    Type: Application
    Filed: August 29, 2013
    Publication date: November 19, 2015
    Applicants: Helmut Schmidt Universität, Universität der Bundeswehr Hamburg, Hamburg Innovation GmbH
    Inventors: Martin Mieth, Udo Zölzer
  • Patent number: 8190427
    Abstract: A compressor device for a compander system has a level detecting/control device and a pre-emphasis device for carrying out an adaptive pre-emphasis filtering. The invention is also directed to an expander device for a compander system with a level detecting/control device and a de-emphasis device for carrying out an adaptive de-emphasis filtering.
    Type: Grant
    Filed: April 5, 2006
    Date of Patent: May 29, 2012
    Assignee: Sennheiser electronic GmbH & Co. KG
    Inventors: Jürgen Peissig, Udo Zoelzer, Florian Keiler, Martin Holters
  • Publication number: 20100204995
    Abstract: A compressor device for a compander system has a level detecting/control device and a pre-emphasis device for carrying out an adaptive pre-emphasis filtering. The invention is also directed to an expander device for a compander system with a level detecting/control device and a de-emphasis device for carrying out an adaptive de-emphasis filtering.
    Type: Application
    Filed: April 5, 2006
    Publication date: August 12, 2010
    Inventors: Juergen Peissig, Udo Zoelzer, Florian Keiler, Martin Holters