Patents by Inventor Allan Mejlgren VON BULOW

Allan Mejlgren VON BULOW 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).

  • Publication number: 20240155301
    Abstract: Audio device and method for operating an audio device is disclosed, the audio device. A processor is configured to: obtain a first microphone input signal and a second microphone input signal; process the first microphone input signal and the second microphone input signal for provision of an output signal; and output the output signal, then obtain a first microphone signal and a second microphone signal; determine a gain compensation scheme based on the first microphone signal and the second microphone signal; and compensate a gain of the microphone signals; wherein to determine the gain compensation scheme comprises to: apply a plurality of test compensation schemes to the first microphone signal and the second microphone signal; determine a performance parameter for each of the test compensation schemes; and select the gain compensation scheme based on the performance parameters.
    Type: Application
    Filed: November 4, 2022
    Publication date: May 9, 2024
    Inventors: Bolaji James ADESOKAN, Allan Mejlgren VON BÜLOW
  • Publication number: 20230197050
    Abstract: A system for wind noise suppression is disclosed. The system comprising a first and a second primary microphone configured to generate a first and a second primary electric signal indicative of a first and second primary audio signal, respectively. The system further comprises a secondary detector configured to generate a first secondary electric signal indicative of a secondary audio signal. The system comprises a signal processor comprising a wind strength module configured to determine a wind strength, based on the first primary electric signal and the second primary electric signal, a wind noise module configured to determine a noise estimate, based on the wind strength, and a noise reduction module configured to process the first secondary electric signal to generate a noise-suppressed secondary signal, based on the determined noise estimate.
    Type: Application
    Filed: November 14, 2022
    Publication date: June 22, 2023
    Inventor: Allan Mejlgren VON BULOW
  • Publication number: 20230098384
    Abstract: An audio device is disclosed, the audio device comprising an interface, memory, and a processor, wherein the processor is configured according to any of the following: obtain a first microphone input signal and a second microphone input signal; process the first microphone input signal and the second microphone input signal for provision of an output audio signal; and output the output audio signal. Processing of the input signals includes determine a first set of covariance parameters and a second set of covariance parameters; determine a first beamforming; apply the first beamforming to the first microphone input signal and the second microphone input signal; determine a second beamforming; apply the second beamforming to the first microphone input signal and the second microphone input signal; and provide the output audio signal based on first beamforming output signal and/or second beamforming output signal.
    Type: Application
    Filed: September 28, 2022
    Publication date: March 30, 2023
    Inventors: Bolaji James ADESOKAN, Allan Mejlgren VON BÜLOW
  • Publication number: 20230097305
    Abstract: Audio device and method for operating an audio device is disclosed, the audio device comprising an interface, memory, and a processor, wherein the processor is configured to: obtain a first microphone input signal and a second microphone input signal; process the first microphone input signal and the second microphone input signal for provision of an output signal; and output the output signal.
    Type: Application
    Filed: September 28, 2022
    Publication date: March 30, 2023
    Inventors: Bolaji James ADESOKAN, Allan Mejlgren VON BÜLOW
  • Publication number: 20230101635
    Abstract: An audio device comprising an interface, memory, and a processor is disclosed. A first microphone input signal and a second microphone input signal is processed for provision of an output audio signal; and output the output audio signal, wherein to process the microphone signals determine a first distractor indicator based on features associated with the input signals; determine a first distractor attenuation parameter based on the first distractor indicator; determine a second distractor indicator based on one or more features associated with the first microphone input signal and the second microphone input signal; determine a second distractor attenuation parameter based on the second distractor indicator; determine an attenuator gain based on the first distractor attenuation parameter and the second gain compensation parameter; and apply a noise suppression scheme to a first beamforming output signal according to the attenuator gain for provision of the output audio signal.
    Type: Application
    Filed: September 28, 2022
    Publication date: March 30, 2023
    Inventors: Bolaji James ADESOKAN, Allan Mejlgren VON BÜLOW
  • Patent number: 10979812
    Abstract: A headset adapted to transmitting an outgoing audio signal (Tx) and comprising a voice microphone and at least one ambient microphone. The headset comprises an ambient noise reduction block (ANR), which is adapted to reduce the level of ambient noise in the outgoing audio signal (Tx). The ambient noise reduction block (ANR) includes the measuring the levels of the voice microphone signal (X) and ambient microphone signal (Y) to estimate a characteristic constant level drop between the voice microphone signal (X) and the ambient microphone signal (Y), which is characteristic for the headset user talking. A time-varying filter passes the voice microphone signal (X), when the level difference is larger than characteristic constant level drop (CLD) and attenuates the voice microphone signal (X), if the level difference is below characteristic constant level drop.
    Type: Grant
    Filed: December 7, 2018
    Date of Patent: April 13, 2021
    Assignees: GN AUDIO A/S
    Inventors: Mads Dyrholm, Allan Mejlgren Von Bulow
  • Publication number: 20200382870
    Abstract: A headset adapted to transmitting an outgoing audio signal (Tx) and comprising a voice microphone and at least one ambient microphone. The headset comprises an ambient noise reduction block (ANR), which is adapted to reduce the level of ambient noise in the outgoing audio signal (Tx). The ambient noise reduction block (ANR) includes the measuring the levels of the voice microphone signal (X) and ambient microphone signal (Y) to estimate a characteristic constant level drop between the voice microphone signal (X) and the ambient microphone signal (Y), which is characteristic for the headset user talking. A time-varying filter passes the voice microphone signal (X), when the level difference is larger than characteristic constant level drop (CLD) and attenuates the voice microphone signal (X), if the level difference is below characteristic constant level drop.
    Type: Application
    Filed: December 7, 2018
    Publication date: December 3, 2020
    Inventors: Mads DYRHOLM, Allan Mejlgren VON BULOW
  • Patent number: 10115412
    Abstract: A signal processor (105) for a headset (101) configured with a microphone terminal (106) for receiving a microphone signal, a loudspeaker terminal (107) for outputting a loudspeaker signal, and a far-end terminal (108) for communicating an inbound signal and an outbound signal with a far-end; comprising: a side-tone path (110) configured to generate a side-tone signal from the microphone signal via a controllable side-tone filter; wherein a side-tone filter controller (114) receives the microphone signal and computes a first noise estimate with a signal-to-noise level of the microphone signal at respective frequency bands and based thereon controls the side-tone filter (111) to improve or optimize a signal-to-noise ratio.
    Type: Grant
    Filed: August 10, 2017
    Date of Patent: October 30, 2018
    Assignee: GN Audio A/S
    Inventors: Allan Mejlgren Von Bulow, Christoffer Bovbjerg
  • Publication number: 20180047410
    Abstract: A signal processor (105) for a headset (101) configured with a microphone terminal (106) for receiving a microphone signal, a loudspeaker terminal (107) for outputting a loudspeaker signal, and a far-end terminal (108) for communicating an inbound signal and an outbound signal with a far-end; comprising: a side-tone path (110) configured to generate a side-tone signal from the microphone signal via a controllable side-tone filter; wherein a side-tone filter controller (114) receives the microphone signal and computes a first noise estimate with a signal-to-noise level of the microphone signal at respective frequency bands and based thereon controls the side-tone filter (111) to improve or optimize a signal-to-noise ratio.
    Type: Application
    Filed: August 10, 2017
    Publication date: February 15, 2018
    Inventors: Allan Mejlgren VON BULOW, Christoffer BOVBJERG