Patents Assigned to ACCUSONUS, INC.
  • Weight matrix initialization method to improve signal decomposition
    Patent number: 11238881
    Abstract: A method of decomposing digital signals using non-negative matrix factorization by generating an initial set of values in a row in the weight matrix from a ratio of a first function of a first signal of a plurality of digital signals divided by a second function of at least two other signals of the plurality of the digital signals, wherein the row in the weight matrix determines a decomposition of the plurality of digital signals into signal components.
    Type: Grant
    Filed: July 25, 2019
    Date of Patent: February 1, 2022
    Assignee: ACCUSONUS, INC.
    Inventors: Elias Kokkinis, Alexandros Tsilfidis
  • Single-channel, binaural and multi-channel dereverberation
    Patent number: 10891931
    Abstract: A method is presented for estimating and suppressing reverberation from a digital reverberant signal. A method for changing a first reverberation estimation according to another reverberation estimation is further provided. A method for controlling the reverberation suppression rate is also presented.
    Type: Grant
    Filed: May 12, 2020
    Date of Patent: January 12, 2021
    Assignee: ACCUSONUS, INC.
    Inventors: Alexandros Tsilfidis, Elias Kokkinis
  • Data training in multi-sensor setups
    Patent number: 10839309
    Abstract: A system and method for constructing training dictionaries with multichannel information. An exemplary method takes into account the effect of the acoustic path while training multichannel acoustic data. A method that uses different time-frequency resolutions in machine learning training is also presented.
    Type: Grant
    Filed: June 6, 2016
    Date of Patent: November 17, 2020
    Assignee: ACCUSONUS, INC.
    Inventors: Elias Kokkinis, Alexandros Tsilfidis, Michael Tzannes
  • Single-channel, binaural and multi-channel dereverberation
    Patent number: 10650796
    Abstract: A method is presented for estimating and suppressing reverberation from a digital reverberant signal. A method for changing a first reverberation estimation according to another reverberation estimation is further provided. A method for controlling the reverberation suppression rate is also presented.
    Type: Grant
    Filed: July 16, 2019
    Date of Patent: May 12, 2020
    Assignee: ACCUSONUS, INC.
    Inventors: Alexandros Tsilfidis, Elias Kokkinis
  • Methods and systems for processing and mixing signals using signal decomposition
    Patent number: 10468036
    Abstract: A method for mixing, processing and enhancing signals using signal decomposition is presented. A method for improving sorting of decomposed signal parts using cross-component similarity is also provided.
    Type: Grant
    Filed: April 30, 2014
    Date of Patent: November 5, 2019
    Assignee: ACCUSONUS, INC.
    Inventors: Alexandros Tsilfidis, Elias Kokkinis
  • Method and system of signal decomposition using extended time-frequency transformations
    Patent number: 10366705
    Abstract: A system and method of decomposing a source signal comprising first and second sound signals, using an extended time-frequency transformation formed by combining a time frequency transformation of a first representation of the source signal with a time-frequency transformation of a second representation of the source signal. The source signal can comprise music, speech, video or other multimedia signals and the decomposition can be controlled by a single knob user interface.
    Type: Grant
    Filed: November 6, 2017
    Date of Patent: July 30, 2019
    Assignee: ACCUSONUS, INC.
    Inventors: Elias Kokkinis, Alexandros Tsilfidis
  • Method and system for denoise and dereverberation in multimedia systems
    Patent number: 10354634
    Abstract: Method and system for use with multimedia signals that analyzes the signals into time-frequency frames over first and second time periods. Estimates of the noise and/or reverberation are derived from the frames. Gains are derived from the estimates and raised to a power to create modified gains. The modified gains are applied to the frame in the appropriate time periods. Modified multimedia signals are output after being processed by the modified gains.
    Type: Grant
    Filed: October 23, 2017
    Date of Patent: July 16, 2019
    Assignee: ACCUSONUS, INC.
    Inventors: Alexandros Tsilfidis, Elias Kokkinis
  • Wireless exchange of data between devices in live events
    Patent number: 9918174
    Abstract: A method for wireless data exchange between devices in live events is presented. A method for exploring data of multiple devices in order to get information on the acoustic paths in different locations of venues is also provided. A method of exploring the microphones of sound-capturing devices of live event's audience is also presented.
    Type: Grant
    Filed: February 27, 2017
    Date of Patent: March 13, 2018
    Assignee: ACCUSONUS, INC.
    Inventors: Alexandros Tsilfidis, Elias Kokkinis
  • Methods and systems for improved signal decomposition
    Patent number: 9812150
    Abstract: A method for improving decomposition of digital signals using training sequences is presented. A method for improving decomposition of digital signals using initialization is also provided. A method for sorting digital signals using frames based upon energy content in the frame is further presented. A method for utilizing user input for combining parts of a decomposed signal is also presented.
    Type: Grant
    Filed: August 28, 2013
    Date of Patent: November 7, 2017
    Assignee: ACCUSONUS, INC.
    Inventors: Elias Kokkinis, Alexandros Tsilfidis
  • Methods and systems for far-field denoise and dereverberation
    Patent number: 9799318
    Abstract: Method and system for use with audible signals that analyzes the signals into time-frequency frames over first and second time periods. Estimates of the noise and/or reverberation are derived from the frames. Gains are derived from the estimates and raised to a power to create modified gains. The modified gains are applied to the frames in the appropriate time periods. Modified audible signals are output after being processed by the modified gains.
    Type: Grant
    Filed: August 8, 2016
    Date of Patent: October 24, 2017
    Assignee: ACCUSONUS, INC.
    Inventors: Alexandros Tsilfidis, Elias Kokkinis
  • Wireless exchange of data between devices in live events
    Patent number: 9584940
    Abstract: A method for wireless data exchange between devices in live events is presented. A method for exploring data of multiple devices in order to get information on the acoustic paths in different locations of venues is also provided. A method of exploring the microphones of sound-capturing devices of live event's audience is also presented.
    Type: Grant
    Filed: July 25, 2016
    Date of Patent: February 28, 2017
    Assignee: ACCUSONUS, INC.
    Inventors: Alexandros Tsilfidis, Elias Kokkinis
  • Single-channel, binaural and multi-channel dereverberation
    Patent number: 9414158
    Abstract: A method is presented for estimating and suppressing reverberation from a digital reverberant signal. A method for changing a first reverberation estimation according to another reverberation estimation is further provided. A method for controlling the reverberation suppression rate is also presented.
    Type: Grant
    Filed: June 15, 2015
    Date of Patent: August 9, 2016
    Assignee: ACCUSONUS, INC.
    Inventors: Alexandros Tsilfidis, Elias Kokkinis