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).
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Patent number: 11010122Abstract: 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: GrantFiled: November 1, 2019Date of Patent: May 18, 2021Assignee: Crestron Electronics, Inc.Inventor: Dennis Fink
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Publication number: 20210074311Abstract: 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 cType: ApplicationFiled: November 20, 2020Publication date: March 11, 2021Applicant: Crestron Electronics, Inc.Inventors: Mark LaBosco, Dennis Fink, Mitchell Walker, Alex Parisi, Matthew King
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Patent number: 10872593Abstract: 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 proceType: GrantFiled: June 13, 2018Date of Patent: December 22, 2020Assignee: Crestron Electronics, Inc.Inventor: Dennis Fink
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Patent number: 10854216Abstract: 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 cType: GrantFiled: February 13, 2020Date of Patent: December 1, 2020Inventors: Mark LaBosco, Dennis Fink, Mitchell Walker, Alex Parisi, Matthew King
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Publication number: 20200265859Abstract: 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 cType: ApplicationFiled: February 13, 2020Publication date: August 20, 2020Inventors: Mark LaBosco, Dennis Fink, Mitchell Walker, Alex Parisi, Matthew King
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Patent number: 10636406Abstract: 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: GrantFiled: June 13, 2018Date of Patent: April 28, 2020Assignee: Crestron Electronics, Inc.Inventor: Dennis Fink
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Publication number: 20200065054Abstract: 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: ApplicationFiled: November 1, 2019Publication date: February 27, 2020Applicant: Crestron Electronics, Inc.Inventor: Dennis Fink
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Patent number: 10474419Abstract: 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: GrantFiled: June 5, 2017Date of Patent: November 12, 2019Assignee: Crestron Electronics, Inc.Inventor: Dennis Fink
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Publication number: 20180357996Abstract: 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 proceType: ApplicationFiled: June 13, 2018Publication date: December 13, 2018Applicant: Crestron Electronics, Inc.Inventor: Dennis Fink
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Publication number: 20180359583Abstract: 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: ApplicationFiled: June 13, 2018Publication date: December 13, 2018Applicant: Crestron Electronics, Inc.Inventor: Dennis Fink
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Publication number: 20170352357Abstract: 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: ApplicationFiled: June 5, 2017Publication date: December 7, 2017Applicant: Crestron Electronics, Inc.Inventor: Dennis Fink
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Patent number: 9716478Abstract: 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: GrantFiled: November 8, 2016Date of Patent: July 25, 2017Assignee: Crestron Electronics, Inc.Inventors: Robert Buono, Dennis Fink
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Patent number: 9647617Abstract: 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: GrantFiled: November 8, 2016Date of Patent: May 9, 2017Inventors: Robert Buono, Dennis Fink
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Publication number: 20170055076Abstract: 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: ApplicationFiled: November 8, 2016Publication date: February 23, 2017Inventors: Robert Buono, Dennis Fink
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Publication number: 20170054421Abstract: 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: ApplicationFiled: November 8, 2016Publication date: February 23, 2017Inventors: Robert Buono, Dennis Fink
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Patent number: 9509261Abstract: 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: GrantFiled: July 10, 2014Date of Patent: November 29, 2016Assignee: Crestron Electronics Inc.Inventors: Robert Buono, Dennis Fink
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Publication number: 20150155839Abstract: 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: ApplicationFiled: July 10, 2014Publication date: June 4, 2015Inventors: Robert Buono, Dennis Fink
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Patent number: 6023153Abstract: 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: GrantFiled: September 10, 1998Date of Patent: February 8, 2000Assignee: Crest Audio, Inc.Inventor: Dennis Fink
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Patent number: 5719526Abstract: 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: GrantFiled: November 16, 1995Date of Patent: February 17, 1998Assignee: Crest Audio, Inc.Inventor: Dennis Fink
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Patent number: D910250Type: GrantFiled: April 29, 2019Date of Patent: February 9, 2021Inventor: Dennis Fink