Patents by Inventor Ronald N. Isaac

Ronald N. Isaac 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).

  • Publication number: 20190014434
    Abstract: A directivity adjustment device that maintains a constant direct-to-reverberant ratio based on the detected location of a listener in relation to the speaker array is described. The directivity adjustment device may include a distance estimator, a directivity compensator, and an array processor. The distance estimator detects the distance between the speaker array and the listener. Based on this detected distance, the directivity compensator calculates a directivity index form a beam produced by the speaker array that maintains a predefined direct-to-reverberant sound energy ratio. The array processor receives the calculated directivity index and processes each channel of a piece of sound program content to produce a set of audio signals that drive one or more of the transducers in the speaker array to generate a beam pattern with the calculated directivity index.
    Type: Application
    Filed: July 9, 2018
    Publication date: January 10, 2019
    Inventors: Martin E. JOHNSON, Ronald N. ISAAC, Afrooz Family
  • Patent number: 10021506
    Abstract: A directivity adjustment device that maintains a constant direct-to-reverberant ratio based on the detected location of a listener in relation to the speaker array is described. The directivity adjustment device may include a distance estimator, a directivity compensator, and an array processor. The distance estimator detects the distance between the speaker array and the listener. Based on this detected distance, the directivity compensator calculates a directivity index form a beam produced by the speaker array that maintains a predefined direct-to-reverberant sound energy ratio. The array processor receives the calculated directivity index and processes each channel of a piece of sound program content to produce a set of audio signals that drive one or more of the transducers in the speaker array to generate a beam pattern with the calculated directivity index.
    Type: Grant
    Filed: March 4, 2014
    Date of Patent: July 10, 2018
    Assignee: Apple Inc.
    Inventors: Martin E. Johnson, Ronald N. Isaac, Afrooz Family
  • Patent number: 9883140
    Abstract: A video conferencing system is described that includes a near-end and a far-end system. The near-end system records both audio and video of one or more users proximate to the near-end system. This recorded audio and video is transmitted to the far-end system through the data connection. The video stream and/or one or more settings of the recording camera are analyzed to determine the amount of a video frame occupied by the recorded user(s). The video conferencing system may directly analyze the video frames themselves and/or a zoom setting of the recording camera to determine a ratio or percentage of the video frame occupied by the recorded user(s). By analyzing video frames associated with an audio stream, the video conferencing system may drive a speaker array of the far-end system to more accurately reproduce sound content based on the position of the recorded user in a video frame.
    Type: Grant
    Filed: September 26, 2014
    Date of Patent: January 30, 2018
    Inventors: Martin E. Johnson, Tom-Davy William Jendrik Saux, Ronald N. Isaac, Sylvain Choisel, Afrooz Family
  • Patent number: 9756446
    Abstract: An audio receiver that performs crosstalk cancellation using a speaker array is described. The audio receiver detects the location of a listener in a room and processes a piece of sound program content to be output through the speaker array using one or more beam pattern matrices. The beam pattern matrices are generated according to one or more constraints. The constraints may include increasing a right channel and decreasing a left channel at the right ear of the listener, increasing a left channel and decreasing a right channel at the left ear of the listener, and decreasing sound in all other areas of the room. These constraints cause the audio receiver to beam sound primarily towards the listener and not in other areas of the room such that crosstalk cancellation is achieved with minimal effects due to changes to the frequency response of the room. Other embodiments are also described.
    Type: Grant
    Filed: March 13, 2014
    Date of Patent: September 5, 2017
    Assignee: Apple Inc.
    Inventors: Martin E. Johnson, Ronald N. Isaac
  • Publication number: 20170099458
    Abstract: A video conferencing system is described that includes a near-end and a far-end system. The near-end system records both audio and video of one or more users proximate to the near-end system. This recorded audio and video is transmitted to the far-end system through the data connection. The video stream and/or one or more settings of the recording camera are analyzed to determine the amount of a video frame occupied by the recorded user(s). The video conferencing system may directly analyze the video frames themselves and/or a zoom setting of the recording camera to determine a ratio or percentage of the video frame occupied by the recorded user(s). By analyzing video frames associated with an audio stream, the video conferencing system may drive a speaker array of the far-end system to more accurately reproduce sound content based on the position of the recorded user in a video frame.
    Type: Application
    Filed: September 26, 2014
    Publication date: April 6, 2017
    Inventors: Martin E. Johnson, Tom-Davy William Jendrik Saux, Ronald N. Isaac, Sylvain Choisel, Afrooz Family
  • Patent number: 9538308
    Abstract: A loudspeaker that measures the impulse response of a listening area is described. The loudspeaker may output sounds corresponding to a segment of an audio signal. The sounds are sensed by a listening device proximate to a listener and transmitted to the loudspeaker. The loudspeaker includes an adaptive filter that estimates the impulse response of the listening area based on the signal segment. An error unit analyzes the estimated impulse response together with the sensed audio signal received from the listening device to determine the accuracy of the estimate. New estimates may be generated by the adaptive filter until an accuracy level is achieved for the signal segment. A processor may utilize one or more estimated impulse responses corresponding to various signal segments that cover a defined frequency spectrum for adjusting the audio signal to compensate for the impulse response of the listening area. Other embodiments are also described.
    Type: Grant
    Filed: March 13, 2014
    Date of Patent: January 3, 2017
    Assignee: Apple Inc.
    Inventor: Ronald N. Isaac
  • Patent number: 9516409
    Abstract: Systems and methods for controlling echo in audio communications between a near-end system and a far-end system are described. The system and method may intelligently assign a plurality of microphone beams to a limited number of echo cancellers for processing. The microphone beams may be classified based on generated statistics to determine beams of interest (e.g., beams with a high ratio of local-voice to echo). Based on this ranking/classification of microphone beams, beams of greater interest may be assigned to echo cancellers while less important beams may temporally remain unprocessed until these beams become of higher importance/interest. Accordingly, a limited number of echo cancellers may be used to intelligently process a larger number of microphone beams based on interest in the beams and properties of echo cancellation performed for each beam.
    Type: Grant
    Filed: May 15, 2015
    Date of Patent: December 6, 2016
    Assignee: Apple Inc.
    Inventors: Sean A. Ramprashad, Martin E. Johnson, Vasu Iyengar, Ronald N. Isaac
  • Patent number: 9491545
    Abstract: In one embodiment, a process for suppressing reverberation begins with a device of a user obtaining a reverberant speech signal from a voice of the user. The device determines a first estimated reverberation component of the reverberant speech signal. The device generates a first de-reverberated output signal with a first reverberation suppression based on the reverberant speech signal and the first estimated reverberation component. Then, the device generates a second improved reverberation component using the first de-reverberated output signal. The device generates a second de-reverberated output signal with a second reverberation suppression based on the reverberant speech signal and the second improved reverberation component.
    Type: Grant
    Filed: May 23, 2014
    Date of Patent: November 8, 2016
    Assignee: Apple Inc.
    Inventors: Vasu Iyengar, Martin E. Johnson, Ronald N. Isaac, Aram M. Lindahl
  • Patent number: 9336557
    Abstract: Methods and apparatus for processing media signals. In one embodiment, a data processing device processes fixed and variable rate data using a first and second processing unit. The processing comprises real-time processing of audio/video signals by a graphics processing unit (GPU) and/or central processing unit (CPU). The processing units process data efficiently by establishing one processor as always processing variable rate data, and using one or more schemes for determining processor will process fixed rate data. A shared memory enables the processors to communicate with one another in order to determine which will process the fixed rate data. In one scheme for determining which of the processors will process the fixed rate data the second processor need merely be unlocked. In another embodiment, the second processor must be unlocked and immediately available.
    Type: Grant
    Filed: May 1, 2013
    Date of Patent: May 10, 2016
    Assignee: Apple Inc.
    Inventors: Brett D. George, Changki Min, David A. Leech, Matthew X. Mora, Niel D. Warren, Rajabali M. Koduri, Ronald N. Isaac
  • Publication number: 20160029142
    Abstract: A loudspeaker that measures the impulse response of a listening area is described. The loudspeaker may output sounds corresponding to a segment of an audio signal. The sounds are sensed by a listening device proximate to a listener and transmitted to the loudspeaker. The loudspeaker includes an adaptive filter that estimates the impulse response of the listening area based on the signal segment. An error unit analyzes the estimated impulse response together with the sensed audio signal received from the listening device to determine the accuracy of the estimate. New estimates may be generated by the adaptive filter until an accuracy level is achieved for the signal segment. A processor may utilize one or more estimated impulse responses corresponding to various signal segments that cover a defined frequency spectrum for adjusting the audio signal to compensate for the impulse response of the listening area. Other embodiments are also described.
    Type: Application
    Filed: March 13, 2014
    Publication date: January 28, 2016
    Inventor: Ronald N. Isaac
  • Publication number: 20160021480
    Abstract: An audio receiver that performs crosstalk cancellation using a speaker array is described. The audio receiver detects the location of a listener in a room and processes a piece of sound program content to be output through the speaker array using one or more beam pattern matrices. The beam pattern matrices are generated according to one or more constraints. The constraints may include increasing a right channel and decreasing a left channel at the right ear of the listener, increasing a left channel and decreasing a right channel at the left ear of the listener, and decreasing sound in all other areas of the room. These constraints cause the audio receiver to beam sound primarily towards the listener and not in other areas of the room such that crosstalk cancellation is achieved with minimal effects due to changes to the frequency response of the room. Other embodiments are also described.
    Type: Application
    Filed: March 13, 2014
    Publication date: January 21, 2016
    Inventors: Martin E. Johnson, Ronald N. Isaac
  • Publication number: 20160021481
    Abstract: A directivity adjustment device that maintains a constant direct-to-reverberant ratio based on the detected location of a listener in relation to the speaker array is described. The directivity adjustment device may include a distance estimator, a directivity compensator, and an array processor. The distance estimator detects the distance between the speaker array and the listener. Based on this detected distance, the directivity compensator calculates a directivity index form a beam produced by the speaker array that maintains a predefined direct-to-reverberant sound energy ratio. The array processor receives the calculated directivity index and processes each channel of a piece of sound program content to produce a set of audio signals that drive one or more of the transducers in the speaker array to generate a beam pattern with the calculated directivity index.
    Type: Application
    Filed: March 4, 2014
    Publication date: January 21, 2016
    Inventors: Martin E. Johnson, Ronald N. Isaac, Afrooz Family
  • Publication number: 20150341722
    Abstract: In one embodiment, a process for suppressing reverberation begins with a device of a user obtaining a reverberant speech signal from a voice of the user. The device determines a first estimated reverberation component of the reverberant speech signal. The device generates a first de-reverberated output signal with a first reverberation suppression based on the reverberant speech signal and the first estimated reverberation component. Then, the device generates a second improved reverberation component using the first de-reverberated output signal. The device generates a second de-reverberated output signal with a second reverberation suppression based on the reverberant speech signal and the second improved reverberation component.
    Type: Application
    Filed: May 23, 2014
    Publication date: November 26, 2015
    Applicant: Apple Inc.
    Inventors: Vasu IYENGAR, Martin E. JOHNSON, Ronald N. ISAAC, Aram M. LINDAHL
  • Patent number: 8660055
    Abstract: An apparatus induces a first wireless device to transmit audio-related data to both the apparatus and a second wireless device by providing the first wireless device with a false indication of the apparatus being capable of performing an audio function that the apparatus is incapable of performing so as to enable the second wireless device to receive the audio-related data simultaneously with the apparatus, and wherein the second wireless device cooperates with the apparatus to leave the first wireless device unaware of the simultaneous receipt of the audio-related data by the second wireless device.
    Type: Grant
    Filed: October 31, 2007
    Date of Patent: February 25, 2014
    Assignee: Bose Corporation
    Inventors: Joji Ueda, Ronald N. Isaac
  • Publication number: 20130332159
    Abstract: A dictation computer that includes a fan speed regulator is described. The fan speed regulator monitors a speech recognition unit to determine when the speech recognition unit is activated. Upon detection that the speech recognition unit is activated, the fan speed regulator ducks the speed of a cooling fan embedded within the dictation computer to an optimized speed of rotation over a delay time interval. The fan speed regulator may include components to adapt the optimized speed and delay time to the characteristics of the dictation computer and the user. Other embodiments are also described.
    Type: Application
    Filed: January 9, 2013
    Publication date: December 12, 2013
    Applicant: Apple Inc.
    Inventors: Craig M. Federighi, John D. Field, Gary P. Geaves, Ronald N. Isaac, Aram M. Lindahl, Eric T. Seymour, Kim E. Silverman, Jeffrey D. Whitman
  • Publication number: 20130293558
    Abstract: Methods and apparatus for processing media signals. In one embodiment, a data processing device processes fixed and variable rate data using a first and second processing unit. The processing comprises real-time processing of audio/video signals by a graphics processing unit (GPU) and/or central processing unit (CPU). The processing units process data efficiently by establishing one processor as always processing variable rate data, and using one or more schemes for determining processor will process fixed rate data. A shared memory enables the processors to communicate with one another in order to determine which will process the fixed rate data. In one scheme for determining which of the processors will process the fixed rate data the second processor need merely be unlocked. In another embodiment, the second processor must be unlocked and immediately available.
    Type: Application
    Filed: May 1, 2013
    Publication date: November 7, 2013
    Inventors: Brett D. George, Changki Min, David A. Leech, Matthew X. Mora, Neil D. Warren, Rajabali M. Koduri, Ronald N. Isaac
  • Patent number: 8090317
    Abstract: Point-to-point links making up a wireless network in which the point-to-point links connect at least personal portable devices are dynamically altered (i.e., new point-to-point links are established and/or other point-to-point links are removed) in response to recurring comparisons of the extents of interaction of each of the personal portable devices with the wireless network to increase the resiliency of the wireless network to the observed behavior of the user of the personal portable devices in changing which personal portable devices are within the network at any given time.
    Type: Grant
    Filed: August 1, 2008
    Date of Patent: January 3, 2012
    Assignee: Bose Corporation
    Inventors: Benjamin D. Burge, Ronald N. Isaac, Joji Ueda
  • Patent number: 8024596
    Abstract: Apparatus and method for dynamically reassigning between a plurality of personal portable devices in a wireless network one or more task portions of a task that have been distributed among the personal portable devices in response to at least one of the personal portable devices having diminishing access to electric power. A reassignment of a particular task routine among the personal portable devices may he forestalled as a result of it being impermissible to transmit a copy of a task routine associated with a task portion and/or a piece of data associated with that task routine from one of the personal portable devices to another. A task portion reassigned between two personal portable devices may be associated with communications between personal portable devices and its reassignment may result in a changing in topological positions of the two personal portable devices within the topology of the wireless network.
    Type: Grant
    Filed: April 29, 2008
    Date of Patent: September 20, 2011
    Assignee: Bose Corporation
    Inventors: Benjamin D. Burge, Ronald N. Isaac, Joji Ueda
  • Patent number: 7995964
    Abstract: Where a plurality of personal portable devices communicating with each other through a personal wireless network are to cooperate to perform a task made up of a plurality of task portions, the task portions are automatically distributed among the personal portable devices at least partially in response to comparisons between the capabilities required to perform each task portion and the capabilities of each of the personal portable devices. In making such comparisons, the capabilities of each of the personal portable devices that are actually available for the performance of one or more of the task portions at the time such comparisons are made may be taken into account, and further, such comparisons may be repeated as the capabilities of each of the personal portable devices that are actually available change over time.
    Type: Grant
    Filed: June 24, 2008
    Date of Patent: August 9, 2011
    Assignee: Bose Corporation
    Inventors: Benjamin D. Burge, Ronald N. Isaac, Joji Ueda
  • Patent number: 7913020
    Abstract: A base device meant to cooperate with one of a plurality of exchangeable docking adapters to enable the base device to cooperate with a personal portable device docked with the docking adapter to perform an audio/visual task. The base device incorporates a programmable logic that is programmed with a configuration data specifying a configuration of interconnections to enable the cooperation between the base device and the personal portable device, and may further incorporate a processor to execute a sequence of instructions of a routine causing the processor to cooperate with the personal portable device through the docking adapter to perform the task.
    Type: Grant
    Filed: April 29, 2008
    Date of Patent: March 22, 2011
    Assignee: Bose Corporation
    Inventors: Keith H. Acosta, Ryan P. Chaves, Ronald N. Isaac, Paulo S. Mendes, Morton Tarr, Christopher D. Vincent