Patents Assigned to DOTTEREL TECHNOLOGIES LIMITED
  • Beamformed microphone array
    Patent number: 12604137
    Abstract: According to a first aspect of the invention, there is provided a method of beamforming for a linear microphone array comprising: storing a desired end-fire beam response including a beamwidth specification; determining an error data set from the stored end-fire beam response; and determining beamforming weights based on a least squares minimisation of the error data set. There are also provided a system, a microphone array, and an apparatus.
    Type: Grant
    Filed: September 30, 2021
    Date of Patent: April 14, 2026
    Assignee: Dotterel Technologies Limited
    Inventors: Shaun Taggart Pentecost, Samuel Seamus Rowe, Shaun Edlin, Matthew Rowe, Hin Loh, Mark Poletti
  • Systems and methods for audio capture
    Patent number: 11721352
    Abstract: A method for noise filtering including receiving directional data corresponding to the relative directions of at least one noise source and at least one target audio source; capturing noise data from the at least one noise source; capturing target audio data from the at least one target audio source; using the directional data to filter the noise data from the target audio data; and outputting filtered target audio.
    Type: Grant
    Filed: May 15, 2019
    Date of Patent: August 8, 2023
    Assignee: Dotterel Technologies Limited
    Inventors: Shaun Michael Edlin, Shaun Taggart Pentecost
  • Shroud
    Patent number: 11097828
    Abstract: A shroud for an aircraft configured to at least partially surround a noise source including a propeller. The shroud includes an outer layer and two or more sound absorbing materials located inside the shroud. The outer layer is configured to transmit noise from the noise source into the inside of the shroud and/or includes a recess located and sized to partially surround at least a part of a tip of at least one blade.
    Type: Grant
    Filed: July 23, 2018
    Date of Patent: August 24, 2021
    Assignee: Dotterel Technologies Limited
    Inventors: Samuel Seamus Rowe, Matthew Rowe, Aidan Clarke
  • Shroud for an aircraft
    Patent number: 10814966
    Abstract: A shroud for an aircraft having a noise reducing material on or in an inner surface of the shroud adjacent to one or more tips of the propeller. The noise reducing material is preferably an electrospun nanomaterial, particularly a ridged composite acoustic nanofibre. The interior surface of the shroud may be provided with a plurality of sound deflectors configured to dissipate sound by reflection and refraction, and absorb sound into the shroud body. The sound deflectors may be ribs or arrangements of discrete reflector elements.
    Type: Grant
    Filed: May 25, 2016
    Date of Patent: October 27, 2020
    Assignee: DOTTEREL TECHNOLOGIES LIMITED
    Inventors: Samuel Seamus Rowe, Shuan Taggart Pentecost