Patents by Inventor Yusuke Konagai

Yusuke Konagai 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: 10932030
    Abstract: Headphones include a first microphone configured to receive ambient sound at an outside of an external auditory canal of a user; a second microphone configured to receive sound inside the external auditory canal; a speaker configured to output sound toward the external auditory canal; a determiner configured to determine whether or not wind noise has occurred by comparing a first signal based on the sound received the first microphone with a second signal based on the sound received by the second microphone; and a processor configured to output, to the speaker, a signal obtained by adding an input signal to the first signal when the determiner determines that wind noise has not occurred.
    Type: Grant
    Filed: June 9, 2020
    Date of Patent: February 23, 2021
    Assignee: YAMAHA CORPORATION
    Inventors: Yusuke Konagai, Hideyoshi Masui
  • Publication number: 20200413213
    Abstract: An audio processing apparatus includes a sensor configured to output a detection signal in accordance with an orientation of the sensor; a memory storing instructions; and at least one processor that implements the instructions to: sequentially generate, based on the detection signal, orientation information pieces each indicative of the orientation of the sensor; correct a current orientation information piece based on an average of a first plurality of orientation information pieces, among the sequentially generated orientation information pieces, and generate a corrected current orientation information piece; determine a head-related-transfer function in accordance with the corrected current orientation information piece; and apply a sound-image-localization processing to an audio signal based on the determined head-related-transfer function.
    Type: Application
    Filed: June 23, 2020
    Publication date: December 31, 2020
    Inventor: Yusuke KONAGAI
  • Patent number: 10860287
    Abstract: A sound output device includes: a first imparter that imparts first sound characteristics to an input signal; a loudspeaker that outputs a sound based on a signal obtained by impartation of the first sound characteristics to the input signal; a first microphone that receives a sound based on the sound output by the loudspeaker; a determiner that obtains difference characteristics between frequency characteristics of the input signal and frequency characteristics of a signal derived from the sound received by the first microphone, to determine whether the difference characteristics fall within a predetermined range from target sound characteristics; and an instruction indicator that outputs an instruction for output of an alert if a result of the determination by the determiner is negative, and the first imparter corrects the first sound characteristics based on the difference characteristics if a result of the determination by the determiner is positive.
    Type: Grant
    Filed: October 17, 2019
    Date of Patent: December 8, 2020
    Assignee: Yamaha Corporation
    Inventor: Yusuke Konagai
  • Publication number: 20200304904
    Abstract: Headphones include a first microphone configured to receive ambient sound at an outside of an external auditory canal of a user; a second microphone configured to receive sound inside the external auditory canal; a speaker configured to output sound toward the external auditory canal; a determiner configured to determine whether or not wind noise has occurred by comparing a first signal based on the sound received the first microphone with a second signal based on the sound received by the second microphone; and a processor configured to output, to the speaker, a signal obtained by adding an input signal to the first signal when the determiner determines that wind noise has not occurred.
    Type: Application
    Filed: June 9, 2020
    Publication date: September 24, 2020
    Inventors: Yusuke KONAGAI, Hideyoshi MASUI
  • Patent number: 10735849
    Abstract: Headphones include a first microphone configured to receive ambient sound at an outside of an external auditory canal of a user; a second microphone configured to receive sound inside the external auditory canal; a speaker configured to output sound toward the external auditory canal; a determiner configured to determine whether or not wind noise has occurred by comparing a first signal based on the sound received the first microphone with a second signal based on the sound received by the second microphone; and a processor configured to output, to the speaker, a signal obtained by adding an input signal to the first signal when the determiner determines that wind noise has not occurred.
    Type: Grant
    Filed: September 6, 2019
    Date of Patent: August 4, 2020
    Assignee: YAMAHA CORPORATION
    Inventors: Yusuke Konagai, Hideyoshi Masui
  • Publication number: 20200125318
    Abstract: A sound output device includes: a first imparter that imparts first sound characteristics to an input signal; a loudspeaker that outputs a sound based on a signal obtained by impartation of the first sound characteristics to the input signal; a first microphone that receives a sound based on the sound output by the loudspeaker; a determiner that obtains difference characteristics between frequency characteristics of the input signal and frequency characteristics of a signal derived from the sound received by the first microphone, to determine whether the difference characteristics fall within a predetermined range from target sound characteristics; and an instruction indicator that outputs an instruction for output of an alert if a result of the determination by the determiner is negative, and the first imparter corrects the first sound characteristics based on the difference characteristics if a result of the determination by the determiner is positive.
    Type: Application
    Filed: October 17, 2019
    Publication date: April 23, 2020
    Inventor: Yusuke KONAGAI
  • Publication number: 20190394557
    Abstract: Headphones include a first microphone configured to receive ambient sound at an outside of an external auditory canal of a user; a second microphone configured to receive sound inside the external auditory canal; a speaker configured to output sound toward the external auditory canal; a determiner configured to determine whether or not wind noise has occurred by comparing a first signal based on the sound received the first microphone with a second signal based on the sound received by the second microphone; and a processor configured to output, to the speaker, a signal obtained by adding an input signal to the first signal when the determiner determines that wind noise has not occurred.
    Type: Application
    Filed: September 6, 2019
    Publication date: December 26, 2019
    Inventors: Yusuke KONAGAI, Hideyoshi MASUI
  • Patent number: 9124978
    Abstract: A speaker array apparatus for outputting sound beams of a plurality of channels based on audio signals of the plurality of channels, includes a directivity control section that controls a directivity of at least one of the sound beams of the channels so as to generate one or more pairs of the sound beams of the channels having roughly the same directivity, and a frequency characteristic applying section that applies a frequency characteristic to the audio signal corresponding to one of the sound beams of the channels in the one or more pairs to change a sound image localization position of the one of the sound beams of the channels in the one or more pairs.
    Type: Grant
    Filed: January 28, 2010
    Date of Patent: September 1, 2015
    Assignee: YAMAHA CORPORATION
    Inventors: Yusuke Konagai, Susumu Takumai, Kazunori Tanaka
  • Patent number: 8428268
    Abstract: An array speaker apparatus includes an array speaker in which plural speaker units are arranged in a single body, a sound source localization adding unit which generates left and right audio signals by performing localization processing for adding sound characteristics to audio signals of a front-left channel and a front-right channel on the basis of head transfer functions, and a sound emitting direction control unit which distributes the left and right audio signals to one or plural speaker units of the array speaker, and controls timing with which the speaker units output the audio signals so that a left sound emitted from the array speaker forms the same sound wavefront formed by a sound emitted from one of virtual point sound sources and that a right sound emitted from the array speaker forms the same sound wavefront formed by a sound emitted from the other of the virtual point sound sources.
    Type: Grant
    Filed: March 10, 2008
    Date of Patent: April 23, 2013
    Assignee: Yamaha Corporation
    Inventors: Yusuke Konagai, Kenichiro Takeshita, Susumu Takumai
  • Patent number: 8369533
    Abstract: An array speaker apparatus SParray includes a first radiation means for driving speaker units so that a first sound S1 of a main channel is radiated to a wall surface W1 on the left or right side of a listening position, and a second radiation means for driving the speaker units so that a second sound S2 the same as the first audio signal is radiated directly to the listening position.
    Type: Grant
    Filed: January 21, 2009
    Date of Patent: February 5, 2013
    Assignee: Yamaha Corporation
    Inventors: Yusuke Konagai, Susumu Takumai
  • Patent number: 8315403
    Abstract: To provide an audio reproduction apparatus in which a general user inputs simple and easy settings so that audio beams of respective channels can be set. When an array speaker is installed in a room, the user inputs the shape of the room into the audio reproduction apparatus. Based on the shape of the room, the audio reproduction apparatus determines a beam control pattern indicating which directions audio signals of the channels should be formed respectively. The audio reproduction apparatus reads beam control data including delay times for forming the beams in the directions from a pattern memory, and automatically sets the beam control data in a DSP. Thus, only when the user inputs the shape of the room, the beams are controlled with a beam control pattern suitable to the room so that multi-channel audio can be reproduced optimally.
    Type: Grant
    Filed: July 6, 2005
    Date of Patent: November 20, 2012
    Assignee: Yamaha Corporation
    Inventors: Yusuke Konagai, Susumu Takumai
  • Patent number: 8223992
    Abstract: A speaker array apparatus includes a speaker array that emits sounds of a plurality of channels, a beam formation calculating section that performs a calculation for controlling phases of the sounds so that the speaker array emits sound beams in directions set for the respective channels, a sound source localization applying section that performs a calculation for controlling the phases of the sounds emitted from the speaker array so as to form a plurality of virtual point sound sources, and performs a calculation of auditory sensation characteristics at a listening position on a basis of a head-related transfer function, a selecting section that selects one of the beam formation calculating section and the sound source localization applying section, and a phase controlling section that controls the phases of the sounds emitted from the speaker array on a basis of a calculation result of the beam formation calculation section which is selected by the selecting section or applies the auditory sensation charact
    Type: Grant
    Filed: July 3, 2008
    Date of Patent: July 17, 2012
    Assignee: Yamaha Corporation
    Inventors: Koji Suzuki, Yusuke Konagai
  • Patent number: 8199925
    Abstract: A first directivity parameter to provide a narrow directivity and a second directivity parameter to provide a wide directivity are preset for a directivity control apparatus to control the directivity of an array loudspeaker system. The directivity control apparatus selects either the first directivity parameter or the second directivity parameter in accordance with an instruction that is entered through an operating unit to select the directional characteristic of a loudspeaker array. Then, based on the selected directivity parameter, the directivity control apparatus generates delay control information, to be supplied to a delay circuit, and generates gain control information, to be supplied to a weighting unit.
    Type: Grant
    Filed: January 4, 2005
    Date of Patent: June 12, 2012
    Assignee: Yamaha Corporation
    Inventor: Yusuke Konagai
  • Patent number: 8194863
    Abstract: A speaker array is provided which can increase the orientation when reproducing front channels of a surround sound, increase the density effect, improve the narrow directivity when reproducing a stereo sound and increase the selectivity in selecting reproduction methods which match setting environments. When reproducing a stereo sound by a speaker array for reproducing a surround sound by converting a sound into a beam of sound, the speaker array is divided into a sound reproducing region for an L system and a sound reproducing region for an R system at a central portion thereof. Then, each of the reproducing regions so divided is further divided in to bands. In addition, since a high frequency reproducing region has a high directivity and a strong orientation when the sound is attempted to be reproduced simultaneously by the plurality of speakers as is described above, a reproducing region is limited to part of the reproducing regions.
    Type: Grant
    Filed: January 4, 2005
    Date of Patent: June 5, 2012
    Assignee: Yamaha Corporation
    Inventors: Susumu Takumai, Yusuke Konagai
  • Patent number: 8189795
    Abstract: A sound signal outputting device includes a receiving section which receives signals on a plurality of channels, a band splitting section which splits the signals on the plurality of channels to produce low-frequency signals whose frequencies are lower than a predetermined frequency respectively, a separating section which separates a correlated component and uncorrelated components between predetermined channels from the low-frequency signals on the plurality of channels, an uncorrelated component outputting section which applies a first directivity to the uncorrelated components of the signals on respective channels to output applied components, and a correlated component outputting section applies a second directivity to the correlated component of the signals on respective channels to output an applied component.
    Type: Grant
    Filed: March 4, 2009
    Date of Patent: May 29, 2012
    Assignee: Yamaha Corporation
    Inventor: Yusuke Konagai
  • Patent number: 8150068
    Abstract: Signals on respective RL, FL, C, FR, RR channels are divided into high frequency signals and low frequency signals by HPFs and LPFs respectively. The low frequency signals on the RL, FL, and C channels are superposed and output from a left-side woofer 21-1, while the low frequency signals on the RR, FR, and C channels are superposed and output from a right-side woofer 21-2. A predetermined directivity is given to the high frequency signals on respective channels by directivity controlling portions 17-1 to 17-5 respectively, and resultant signals are output from respective speaker units 20-1 to 20-n of an array speaker to generate virtual sound sources by the reflection from wall surfaces. A crossover frequency f2 of the rear channels (RL, RR) is set higher than a crossover frequency f1 of the front channels (FL, FR), and the signals on the rear channels are shaped into a narrow beam to generate a high-quality surround sound field.
    Type: Grant
    Filed: February 23, 2006
    Date of Patent: April 3, 2012
    Assignee: Yamaha Corporation
    Inventors: Yusuke Konagai, Susumu Takumai
  • Publication number: 20110243353
    Abstract: A speaker apparatus includes: a first outputting unit that has a first speaker unit group in which a plurality of speaker units are arranged, and that outputs a supplied audio signal from the first speaker unit group as a sound which is directed in a direction; a second outputting unit that has a second speaker unit which is placed so that a front direction of the second speaker unit in which a frontage of the second speaker unit faces is different from a front direction of the first speaker unit group in which a frontage of the first speaker unit group faces, and that outputs a supplied audio signal from the second speaker unit as a sound; and a supplying unit that separates an input audio signal into an audio signal in a low-frequency band where a frequency band which is higher than a first frequency is attenuated, and an audio signal in a high-frequency band where a frequency band which is lower than a second frequency is attenuated, the supplying unit that supplies the audio signal in the low-frequency ba
    Type: Application
    Filed: March 30, 2011
    Publication date: October 6, 2011
    Applicant: Yamaha Corporation
    Inventors: Susumu TAKUMAI, Yusuke Konagai, Kazunori Tanaka
  • Patent number: 7970153
    Abstract: An audio output apparatus has a measuring circuit which measures the levels of at least two sound signals, a sound level adjusting module (a sound level adjusting circuit and a gain control circuit) which adjusts a sound level so as to equal the levels of the sound signals based on the levels measured at the measuring circuit, and an array speaker unit (a delay circuit, a multiplier, an adder, an amplifier and a speaker unit) which emits sounds in accordance with the sound signals outputted from the sound level adjusting module in different directivities respectively.
    Type: Grant
    Filed: December 24, 2004
    Date of Patent: June 28, 2011
    Assignee: Yamaha Corporation
    Inventors: Yusuke Konagai, Susumu Takumai
  • Patent number: 7920710
    Abstract: An array loudspeaker is constructed by stacking loudspeaker rows in a plurality of stages, each of the loudspeaker rows being formed by arranging loudspeaker elements in the form of a horizontal line. The loudspeaker rows are arranged in a zigzag form by, for example, offsetting the positions of the loudspeakers in the left and right direction for each stage. As for a high range signal, a two-stage portion of halves of the loudspeaker rows is used to narrow the pitch of the loudspeaker elements so as to prevent the grating lobe. As for a low range signal, the entire single-stage loudspeaker row is used to alleviate the deviation with respect to the directivity characteristics of the high range.
    Type: Grant
    Filed: January 4, 2005
    Date of Patent: April 5, 2011
    Assignee: Yamaha Corporation
    Inventors: Yusuke Konagai, Takuya Tamaru
  • Publication number: 20100189267
    Abstract: A speaker array apparatus for outputting sound beams of a plurality of channels based on audio signals of the plurality of channels, includes a directivity control section that controls a directivity of at least one of the sound beams of the channels so as to generate one or more pairs of the sound beams of the channels having roughly the same directivity, and a frequency characteristic applying section that applies a frequency characteristic to the audio signal corresponding to one of the sound beams of the channels in the one or more pairs to change a sound image localization position of the one of the sound beams of the channels in the one or more pairs.
    Type: Application
    Filed: January 28, 2010
    Publication date: July 29, 2010
    Applicant: YAMAHA CORPORATION
    Inventors: Yusuke KONAGAI, Susumu TAKUMAI, Kazunori TANAKA