Patents by Inventor Dennis Fink

Dennis Fink 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: 11010122
    Abstract: A system and method executed by audio processing software on one or more electronic devices in a computer system to process digital audio signals.
    Type: Grant
    Filed: November 1, 2019
    Date of Patent: May 18, 2021
    Assignee: Crestron Electronics, Inc.
    Inventor: Dennis Fink
  • Publication number: 20210074311
    Abstract: An audio processing device for use in a network connected audio conferencing system is provided, comprising: a network microphone array comprising two or more microphones (mics) and a beamforming circuit, wherein the network mic array is adapted to acquire acoustic audio signals, convert the same to electric audio signals, perform audio beamforming on the electric audio signals, and output a digital combined beamforming circuit output signal that comprises a first signal part and a second signal part, and wherein the first signal part comprises a first set of digital bits that comprises an active beam index, and wherein the active beam index encodes a selected beam position out of a possible N beam positions, and wherein the second signal part comprises a second set of digital bits that comprises a beamformed audio signal; a receiver adapted to receive the digital combined beamforming circuit output signal and split the same into the first signal part and the second signal part; a plurality of acoustic echo c
    Type: Application
    Filed: November 20, 2020
    Publication date: March 11, 2021
    Applicant: Crestron Electronics, Inc.
    Inventors: Mark LaBosco, Dennis Fink, Mitchell Walker, Alex Parisi, Matthew King
  • Patent number: 10872593
    Abstract: An audio noise calibration circuit is provided comprising: a speaker, the speaker including a driver input; a switch having a first terminal, a second terminal, and an output, and wherein the switch is adapted to be responsive to a switching signal having at least a first switching state and a second switching state such that the first terminal of the switch is connected to the output of the switch when the switching signal is in the first switching state such that there is electrical connectivity between the first terminal and the output, and the second terminal of the switch is connected to the output of the switch when the switching signal is in the second switching state such that there is electrical connectivity between the second terminal and the output, and further wherein the output of the switch is connected to the driver input of the speaker; and an audio processing unit adapted to generate the switching signal such that when in the first switching state, an audio signal generated by the audio proce
    Type: Grant
    Filed: June 13, 2018
    Date of Patent: December 22, 2020
    Assignee: Crestron Electronics, Inc.
    Inventor: Dennis Fink
  • Patent number: 10854216
    Abstract: An audio processing device for use in a network connected audio conferencing system is provided, comprising: a network microphone array comprising two or more microphones (mics) and a beamforming circuit, wherein the network mic array is adapted to acquire acoustic audio signals, convert the same to electric audio signals, perform audio beamforming on the electric audio signals, and output a digital combined beamforming circuit output signal that comprises a first signal part and a second signal part, and wherein the first signal part comprises a first set of digital bits that comprises an active beam index, and wherein the active beam index encodes a selected beam position out of a possible N beam positions, and wherein the second signal part comprises a second set of digital bits that comprises a beamformed audio signal; a receiver adapted to receive the digital combined beamforming circuit output signal and split the same into the first signal part and the second signal part; a plurality of acoustic echo c
    Type: Grant
    Filed: February 13, 2020
    Date of Patent: December 1, 2020
    Inventors: Mark LaBosco, Dennis Fink, Mitchell Walker, Alex Parisi, Matthew King
  • Publication number: 20200265859
    Abstract: An audio processing device for use in a network connected audio conferencing system is provided, comprising: a network microphone array comprising two or more microphones (mics) and a beamforming circuit, wherein the network mic array is adapted to acquire acoustic audio signals, convert the same to electric audio signals, perform audio beamforming on the electric audio signals, and output a digital combined beamforming circuit output signal that comprises a first signal part and a second signal part, and wherein the first signal part comprises a first set of digital bits that comprises an active beam index, and wherein the active beam index encodes a selected beam position out of a possible N beam positions, and wherein the second signal part comprises a second set of digital bits that comprises a beamformed audio signal; a receiver adapted to receive the digital combined beamforming circuit output signal and split the same into the first signal part and the second signal part; a plurality of acoustic echo c
    Type: Application
    Filed: February 13, 2020
    Publication date: August 20, 2020
    Inventors: Mark LaBosco, Dennis Fink, Mitchell Walker, Alex Parisi, Matthew King
  • Patent number: 10636406
    Abstract: A room monitoring System is provided, comprising: a speaker; a microphone; and a digital signal processor (DSP) adapted to generate and transmit a first audio test signal to the speaker to be broadcast in the room, wherein the first audio test signal comprises a power spectral density that is inversely proportional to its frequency, and wherein the transmitted first audio test signal is reflected within the room, and wherein the DSP is further adapted to process the reflected broadcast first audio test signal received by the microphone, generate and save a frequency-amplitude analysis of the received first audio test signal as an initial reference curve, periodically test the room in a substantially similar manner to generate one or more additional reference curves, and compare the one or more additional reference curves to determine whether they are within a known, predetermined tolerance of the initial reference curve.
    Type: Grant
    Filed: June 13, 2018
    Date of Patent: April 28, 2020
    Assignee: Crestron Electronics, Inc.
    Inventor: Dennis Fink
  • Publication number: 20200065054
    Abstract: A system and method executed by audio processing software on one or more electronic devices in a computer system to process digital audio signals.
    Type: Application
    Filed: November 1, 2019
    Publication date: February 27, 2020
    Applicant: Crestron Electronics, Inc.
    Inventor: Dennis Fink
  • Patent number: 10474419
    Abstract: A system and method executed by audio processing software on one or more electronic devices in a computer system to process digital audio signals.
    Type: Grant
    Filed: June 5, 2017
    Date of Patent: November 12, 2019
    Assignee: Crestron Electronics, Inc.
    Inventor: Dennis Fink
  • Publication number: 20180357996
    Abstract: An audio noise calibration circuit is provided comprising: a speaker, the speaker including a driver input; a switch having a first terminal, a second terminal, and an output, and wherein the switch is adapted to be responsive to a switching signal having at least a first switching state and a second switching state such that the first terminal of the switch is connected to the output of the switch when the switching signal is in the first switching state such that there is electrical connectivity between the first terminal and the output, and the second terminal of the switch is connected to the output of the switch when the switching signal is in the second switching state such that there is electrical connectivity between the second terminal and the output, and further wherein the output of the switch is connected to the driver input of the speaker; and an audio processing unit adapted to generate the switching signal such that when in the first switching state, an audio signal generated by the audio proce
    Type: Application
    Filed: June 13, 2018
    Publication date: December 13, 2018
    Applicant: Crestron Electronics, Inc.
    Inventor: Dennis Fink
  • Publication number: 20180359583
    Abstract: A room monitoring System is provided, comprising: a speaker; a microphone; and a digital signal processor (DSP) adapted to generate and transmit a first audio test signal to the speaker to be broadcast in the room, wherein the first audio test signal comprises a power spectral density that is inversely proportional to its frequency, and wherein the transmitted first audio test signal is reflected within the room, and wherein the DSP is further adapted to process the reflected broadcast first audio test signal received by the microphone, generate and save a frequency-amplitude analysis of the received first audio test signal as an initial reference curve, periodically test the room in a substantially similar manner to generate one or more additional reference curves, and compare the one or more additional reference curves to determine whether they are within a known, predetermined tolerance of the initial reference curve.
    Type: Application
    Filed: June 13, 2018
    Publication date: December 13, 2018
    Applicant: Crestron Electronics, Inc.
    Inventor: Dennis Fink
  • Publication number: 20170352357
    Abstract: A system and method executed by audio processing software on one or more electronic devices in a computer system to process digital audio signals.
    Type: Application
    Filed: June 5, 2017
    Publication date: December 7, 2017
    Applicant: Crestron Electronics, Inc.
    Inventor: Dennis Fink
  • Patent number: 9716478
    Abstract: A multi-channel Class D audio amplifier is provided to substantially reduce channel-to-channel crosstalk by employing in each channel a local triangle ramp generator controlled by a single global digital timing signal. The noise critical timing/integrating capacitor for the triangle ramp generator resides locally in each channel and adjacent to the PWM comparator of that channel and referenced to the local ground of that channel. The amplifier can also include a duty cycle limitation circuit to limit output power availability depending on the impedance of any attached loads (speakers).
    Type: Grant
    Filed: November 8, 2016
    Date of Patent: July 25, 2017
    Assignee: Crestron Electronics, Inc.
    Inventors: Robert Buono, Dennis Fink
  • Patent number: 9647617
    Abstract: A multi-channel Class D audio amplifier is provided to substantially reduce channel-to-channel crosstalk by employing in each channel a local triangle ramp generator controlled by a single global digital timing signal. The noise critical timing/integrating capacitor for the triangle ramp generator resides locally in each channel and adjacent to the PWM comparator of that channel and referenced to the local ground of that channel. The amplifier can also include a duty cycle limitation circuit to limit output power availability depending on the impedance of any attached loads (speakers).
    Type: Grant
    Filed: November 8, 2016
    Date of Patent: May 9, 2017
    Inventors: Robert Buono, Dennis Fink
  • Publication number: 20170055076
    Abstract: A multi-channel Class D audio amplifier is provided to substantially reduce channel-to-channel crosstalk by employing in each channel a local triangle ramp generator controlled by a single global digital timing signal. The noise critical timing/integrating capacitor for the triangle ramp generator resides locally in each channel and adjacent to the PWM comparator of that channel and referenced to the local ground of that channel. The amplifier can also include a duty cycle limitation circuit to limit output power availability depending on the impedance of any attached loads (speakers).
    Type: Application
    Filed: November 8, 2016
    Publication date: February 23, 2017
    Inventors: Robert Buono, Dennis Fink
  • Publication number: 20170054421
    Abstract: A multi-channel Class D audio amplifier is provided to substantially reduce channel-to-channel crosstalk by employing in each channel a local triangle ramp generator controlled by a single global digital timing signal. The noise critical timing/integrating capacitor for the triangle ramp generator resides locally in each channel and adjacent to the PWM comparator of that channel and referenced to the local ground of that channel. The amplifier can also include a duty cycle limitation circuit to limit output power availability depending on the impedance of any attached loads (speakers).
    Type: Application
    Filed: November 8, 2016
    Publication date: February 23, 2017
    Inventors: Robert Buono, Dennis Fink
  • Patent number: 9509261
    Abstract: A multi-channel Class D audio amplifier is provided to substantially reduce channel-to-channel crosstalk by employing in each channel a local triangle ramp generator controlled by a single global digital timing signal. The noise critical timing/integrating capacitor for the triangle ramp generator resides locally in each channel and adjacent to the PWM comparator of that channel and referenced to the local ground of that channel. The amplifier can also include a duty cycle limitation circuit to limit output power availability depending on the impedance of any attached loads (speakers).
    Type: Grant
    Filed: July 10, 2014
    Date of Patent: November 29, 2016
    Assignee: Crestron Electronics Inc.
    Inventors: Robert Buono, Dennis Fink
  • Publication number: 20150155839
    Abstract: A multi-channel Class D audio amplifier is provided to substantially reduce channel-to-channel crosstalk by employing in each channel a local triangle ramp generator controlled by a single global digital timing signal. The noise critical timing/integrating capacitor for the triangle ramp generator resides locally in each channel and adjacent to the PWM comparator of that channel and referenced to the local ground of that channel. The amplifier can also include a duty cycle limitation circuit to limit output power availability depending on the impedance of any attached loads (speakers).
    Type: Application
    Filed: July 10, 2014
    Publication date: June 4, 2015
    Inventors: Robert Buono, Dennis Fink
  • Patent number: 6023153
    Abstract: An audio amplifier for receiving input current and sinusoidal line voltage from an AC source, and delivering audio output power to a load includes: a power factor correction circuit for receiving the line voltage from the AC source, the power factor correction circuit including a control circuit operable to cause the wave shape of the input current drawn from the AC source to substantially correspond to the wave shape of the line voltage by producing an intermediate source of voltage at a substantially higher potential than the line voltage of the AC source; a DC power supply coupled to the power factor correction circuit and operable to convert the intermediate source of voltage into a regulated DC source of power; and an audio power amplifier coupled to the DC power supply and operable to convert the DC source of power into the audio output power for delivery to the load.
    Type: Grant
    Filed: September 10, 1998
    Date of Patent: February 8, 2000
    Assignee: Crest Audio, Inc.
    Inventor: Dennis Fink
  • Patent number: 5719526
    Abstract: A load monitor module for measuring voltage and current supplied from an amplifier to a load is provided within an amplifier and includes a device for calculating an impedance of the load and an amount of power delivered to the load from the amplifier. The load monitor module includes a voltage measuring device and a current measuring device for accurately measuring the voltage and current of a generated test signal or an audio signal input the amplifier signal path without substantially altering the signal. The monitor module also includes a controller for controlling the performance of the amplifier and load according to the calculated load impedance and power input to the load from the amplifier.
    Type: Grant
    Filed: November 16, 1995
    Date of Patent: February 17, 1998
    Assignee: Crest Audio, Inc.
    Inventor: Dennis Fink
  • Patent number: D910250
    Type: Grant
    Filed: April 29, 2019
    Date of Patent: February 9, 2021
    Inventor: Dennis Fink