Patents by Inventor David Byrd Ribner
David Byrd Ribner 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: 9412348Abstract: A resonance tuner receives and digitizes an analog signal in response to a resonance of a structure thereby creating a plurality of time samples. A series of the time samples are buffered upon burst detection. A power spectrum is estimated by computing a Time-To-Frequency-Transform of the series of time samples and a magnitude of each of the resulting frequency samples is squared. At least one subset associated with at least one spectral peak is selected from the frequency samples. Each spectral peak has at least one sample with a sufficient magnitude and being spectrally adjacent to any other sample in another spectral peak by less than a threshold. A fundamental spectral peak is determined in a fundamental subset including a spectral peak with a sample at the lowest frequency greater than zero. The fundamental spectral peak has the sample with the largest magnitude within the fundamental subset.Type: GrantFiled: August 7, 2015Date of Patent: August 9, 2016Assignee: Overtone Labs, Inc.Inventor: David Byrd Ribner
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Publication number: 20160035328Abstract: A resonance tuner receives and digitizes an analog signal in response to a resonance of a structure thereby creating a plurality of time samples. A series of the time samples are buffered upon burst detection. A power spectrum is estimated by computing a Time-To-Frequency-Transform of the series of time samples and a magnitude of each of the resulting frequency samples is squared. At least one subset associated with at least one spectral peak is selected from the frequency samples. Each spectral peak has at least one sample with a sufficient magnitude and being spectrally adjacent to any other sample in another spectral peak by less than a threshold. A fundamental spectral peak is determined in a fundamental subset including a spectral peak with a sample at the lowest frequency greater than zero. The fundamental spectral peak has the sample with the largest magnitude within the fundamental subset.Type: ApplicationFiled: August 7, 2015Publication date: February 4, 2016Inventor: David Byrd Ribner
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Patent number: 9153221Abstract: Provided are a percussion instrument tuning system and method. A position sensor determines at least one first position of a tuning mechanism of a timpano. A control unit generates a calibration result by measuring a first pitch of the timpano corresponding to the at least one first position of the tuning mechanism and estimates a second pitch of the timpano corresponding to at least one second position of the tuning mechanism from the calibration result.Type: GrantFiled: September 10, 2013Date of Patent: October 6, 2015Assignee: Overtone Labs, Inc.Inventor: David Byrd Ribner
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Patent number: 9135904Abstract: A resonance tuner receives and digitizes an analog signal in response to a resonance of a structure thereby creating a plurality of time samples. A series of the time samples are buffered upon burst detection. A power spectrum is estimated by computing a Time-To-Frequency-Transform of the series of time samples and a magnitude of each of the resulting frequency samples is squared. At least one subset associated with at least one spectral peak is selected from the frequency samples. Each spectral peak has at least one sample with a sufficient magnitude and being spectrally adjacent to any other sample in another spectral peak by less than a threshold. A fundamental spectral peak is determined in a fundamental subset including a spectral peak with a sample at the lowest frequency greater than zero. The fundamental spectral peak has the sample with the largest magnitude within the fundamental subset.Type: GrantFiled: December 10, 2013Date of Patent: September 15, 2015Assignee: Overtone Labs, Inc.Inventor: David Byrd Ribner
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Publication number: 20140182446Abstract: A processor of a tuning apparatus receives a desired fundamental frequency or note and determines a frequency of at least one drumhead of a drum in response to the received desired fundamental frequency or note. An output at the processor outputs a value corresponding to the determined frequency of the drumhead.Type: ApplicationFiled: March 7, 2014Publication date: July 3, 2014Applicant: Overtone Labs, Inc.Inventor: David Byrd Ribner
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Patent number: 8759655Abstract: Provided are systems and methods for resonance tuning. A signal is received in response to a resonance of a structure. A frequency or musical note related to an overtone is determined from the signal. The frequency or musical note related to the overtone is selected as a filter mode reference frequency or musical note. A display of frequencies or musical notes from a subsequent signal that deviate from the filter mode reference frequency or musical note by a predetermined threshold is suppressed.Type: GrantFiled: November 29, 2012Date of Patent: June 24, 2014Assignee: Overtone Labs, Inc.Inventor: David Byrd Ribner
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Publication number: 20140165818Abstract: Disclosed is a tuning apparatus comprising a processor that receives a desired fundamental frequency or note and determines a frequency of at least one drumhead of a drum in response to the received desired fundamental frequency or note and a display that presents a value corresponding to the determined frequency of the drumhead.Type: ApplicationFiled: May 3, 2013Publication date: June 19, 2014Applicant: OVERTONE LABS, INC.Inventor: David Byrd Ribner
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Patent number: 8742242Abstract: A processor of a tuning apparatus receives a desired fundamental frequency or note and determines a frequency or note of at least one drumhead of a drum in response to the received desired fundamental frequency or note. An output at the processor outputs a value corresponding to the determined frequency or note of the drumhead.Type: GrantFiled: May 3, 2013Date of Patent: June 3, 2014Assignee: Overtone Labs, Inc.Inventor: David Byrd Ribner
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Publication number: 20140096666Abstract: A resonance tuner receives and digitizes an analog signal in response to a resonance of a structure thereby creating a plurality of time samples. A series of the time samples are buffered upon burst detection. A power spectrum is estimated by computing a Time-To-Frequency-Transform of the series of time samples and a magnitude of each of the resulting frequency samples is squared. At least one subset associated with at least one spectral peak is selected from the frequency samples. Each spectral peak has at least one sample with a sufficient magnitude and being spectrally adjacent to any other sample in another spectral peak by less than a threshold. A fundamental spectral peak is determined in a fundamental subset including a spectral peak with a sample at the lowest frequency greater than zero. The fundamental spectral peak has the sample with the largest magnitude within the fundamental subset.Type: ApplicationFiled: December 10, 2013Publication date: April 10, 2014Applicant: Overtone Labs, Inc.Inventor: David Byrd Ribner
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Publication number: 20140069258Abstract: Provided are a percussion instrument tuning system and method. A position sensor determines at least one first position of a tuning mechanism of a timpano. A control unit generates a calibration result by measuring a first pitch of the timpano corresponding to the at least one first position of the tuning mechanism and estimates a second pitch of the timpano corresponding to at least one second position of the tuning mechanism from the calibration result.Type: ApplicationFiled: September 10, 2013Publication date: March 13, 2014Applicant: OVERTONE LABS, INC.Inventor: David Byrd Ribner
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Patent number: 8642874Abstract: A resonance tuner receives and digitizes an analog signal in response to a resonance of a structure thereby creating a plurality of time samples. A series of the time samples are buffered upon burst detection. A power spectrum is estimated by computing a Time-To-Frequency-Transform of the series of time samples and a magnitude of each of the resulting frequency samples is squared. At least one subset associated with at least one spectral peak is selected from the frequency samples. Each spectral peak has at least one sample with a sufficient magnitude and being spectrally adjacent to any other sample in another spectral peak by less than a threshold. A fundamental spectral peak is determined in a fundamental subset including a spectral peak with a sample at the lowest frequency greater than zero. The fundamental spectral peak has the sample with the largest magnitude within the fundamental subset.Type: GrantFiled: January 11, 2011Date of Patent: February 4, 2014Assignee: Overtone Labs, Inc.Inventor: David Byrd Ribner
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Patent number: 8502060Abstract: Provided are systems and methods for resonance tuning. A signal is received in response to a resonance of a structure. A frequency or musical note related to an overtone is determined from the signal. The frequency or musical note related to the overtone is selected as a filter mode reference frequency or musical note. A display of frequencies or musical notes from a subsequent signal that deviate from the filter mode reference frequency or musical note by a predetermined threshold is suppressed.Type: GrantFiled: February 15, 2013Date of Patent: August 6, 2013Assignee: Overtone Labs, Inc.Inventor: David Byrd Ribner
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Publication number: 20110179939Abstract: A resonance tuner receives and digitizes an analog signal in response to a resonance of a structure thereby creating a plurality of time samples. A series of the time samples are buffered upon burst detection. A power spectrum is estimated by computing a Time-To-Frequency-Transform of the series of time samples and a magnitude of each of the resulting frequency samples is squared. At least one subset associated with at least one spectral peak is selected from the frequency samples. Each spectral peak has at least one sample with a sufficient magnitude and being spectrally adjacent to any other sample in another spectral peak by less than a threshold. A fundamental spectral peak is determined in a fundamental subset including a spectral peak with a sample at the lowest frequency greater than zero. The fundamental spectral peak has the sample with the largest magnitude within the fundamental subset.Type: ApplicationFiled: January 11, 2011Publication date: July 28, 2011Applicant: SI X SEMICONDUCTOR INC.Inventor: David Byrd Ribner
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Patent number: 6028891Abstract: A discrete multi-tone, asymmetrical transceiver and method wherein a modem at a central office transmits information to a modem at a remote terminal on a down-stream signal and the modem at the remote terminal transmits information to the modem at the central office on an up-stream signal. The up-stream signal comprising data carried by a lower portion of a predetermined band of frequencies and the down-stream signal comprising data carried by an upper portion of the predetermined band of frequencies. The system includes an interpolator, at the remote terminal, for adding interpolated data into a stream of data distributed by the remote terminal modem among the lower portion of the predetermined band of frequencies for transmission in the up-stream signal. An ADC is provided at the modem of the central office, for converting the down-stream signal into digital samples at a sampling rate greater than the frequency of the highest frequency in the down-stream signal.Type: GrantFiled: June 25, 1996Date of Patent: February 22, 2000Assignee: Analog Devices, Inc.Inventors: David Byrd Ribner, David Hall Robertson
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Patent number: 5757300Abstract: Delta sigma modulators for accepting input signals having amplitudes up to -1 dB of full-scale and a center frequency (F.sub.S) in the range ?F.sub.S /90, 44F 90!, and which are not prone to internal overflow, require few circuit parameters, and yield a signal transfer function with the inherent property that the modulator magnitude response is close to unity gain in the frequency region of interest include, in one embodiment, a pair of cascaded integrators, a unit delay element coupled to the output of the second integrator, an analog-to-digital (A/D) converter, and a one-bit digital-to-analog (D/A) converter controlled by output signals from the A/D converter. A first differential summing junction coupled to the output of the D/A converter is responsive to delta sigma modulator input signals. A second differential summing junction, coupled to the output of the first differential summing junction, is also coupled to receive a feedback signal from the second integrator.Type: GrantFiled: October 22, 1996Date of Patent: May 26, 1998Assignee: General Electric CompanyInventors: Ravinder David Koilpillai, David Byrd Ribner, Jerome Johnson Tiemann
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Patent number: 5754131Abstract: A delta sigma modulator that has a low power dissipation without sacrificing modulator resolution includes, in one embodiment, a current mode digital to analog converter (DAC) in shunt with a conventional op amp in the first stage of the delta sigma modulator. By adding the current mode DAC in shunt with the first (or only) stage op amp of the delta sigma modulator, the slewing current needed during transients is provided by the combination of the op amp and DAC output signals. Since the DAC provides the slewing current required for the output signal change, the op amp need not apply the slewing current and therefore need only operate at low quiescent power.Type: GrantFiled: July 1, 1996Date of Patent: May 19, 1998Assignee: General Electric CompanyInventors: David Byrd Ribner, Juha Mikko Hakkarainen, David Henry Kenneth Hoe
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Patent number: 5682160Abstract: A delta sigma modulator which enables each cascaded integrator to settle independently within a full clock period and uses binomial coefficients in the feedback paths to obtain the required sinusoidal shaping of quantizer error, achieves an increase in both the sampling rate and the order to improve resolution. Using a multi-bit quantizer also improves modulator resolution. In one embodiment, the modulator includes a plurality of cascaded unit-delay integrators and utilizes binomial coefficient scaling in the feedback loop. A multi-bit analog-to-digital converter is coupled to receive the output signal of the cascaded unit-delay integrators. The feedback loop includes a multi-bit digital-to-analog converter coupled to the output of the multi-bit analog-to-digital converter. The output of the digital-to-analog converter is coupled to the inputs of at least the first and second differential summing junctions.Type: GrantFiled: May 20, 1996Date of Patent: October 28, 1997Inventors: David Byrd Ribner, David Henry Kenneth Hoe
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Patent number: 5682161Abstract: A delta-sigma modulator includes, in one embodiment, cascaded unit-delay integrators, the number of which is selected depending upon the order desired. The modulator further includes an n-bit (or multi-bit) A/D converter coupled to the output of the last cascaded integrator, and an n-bit (or multi-bit) D/A converter coupled to the output of the A/D converter. A truncator also is coupled to the output of the A/D converter. Truncation error correction is performed digitally by a truncation corrector. A one-bit D/A converter provides feedback from the output of the truncator to differential summing junctions interposed at the input of each unit-delay integrator. The multi-bit D/A converter output signal is fed back to differential summing junctions at the input of the third order and higher unit-delay integrators.Type: GrantFiled: May 20, 1996Date of Patent: October 28, 1997Assignee: General Electric CompanyInventors: David Byrd Ribner, David Henry Kenneth Hoe