Patents by Inventor Masafumi Nakata

Masafumi Nakata 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: 11749242
    Abstract: A signal processing method according to an embodiment of the present disclosure includes outputting a second sound signal by varying a level of a portion of a band of a first sound signal based on a second parameter corresponding to a displacement of each of a plurality of operators, the first sound signal being identified by a first parameter corresponding to the displacement, the second parameter being different from the first parameter.
    Type: Grant
    Filed: November 17, 2020
    Date of Patent: September 5, 2023
    Assignee: YAMAHA CORPORATION
    Inventors: Yasuhiko Oba, Masafumi Nakata, Noriaki Matsuo
  • Publication number: 20220199057
    Abstract: A sound signal generation method includes receiving a pitch and an intensity, and generating a sound signal corresponding to the pitch such that a size of a sound image of the sound signal is adjusted in accordance with the intensity.
    Type: Application
    Filed: March 11, 2022
    Publication date: June 23, 2022
    Inventors: Masafumi NAKATA, Naoaki IWANAGA
  • Publication number: 20210074251
    Abstract: A signal processing method according to an embodiment of the present disclosure includes outputting a second sound signal by varying a level of a portion of a band of a first sound signal based on a second parameter corresponding to a displacement of each of a plurality of operators, the first sound signal being identified by a first parameter corresponding to the displacement, the second parameter being different from the first parameter.
    Type: Application
    Filed: November 17, 2020
    Publication date: March 11, 2021
    Inventors: Yasuhiko OBA, Masafumi NAKATA, Noriaki MATSUO
  • Publication number: 20210074250
    Abstract: A resonance sound signal generation method includes providing an instruction configured to generate a sound signal corresponding to a received pitch and producing a resonance sound signal. The method also includes receiving a multiple damper operation with respect to a plurality of pitches in a first pitch range. The method also includes providing an instruction configured to produce the resonance sound signal based on an additional sound relating to the multiple damper operation when the multiple damper operation is received.
    Type: Application
    Filed: September 4, 2020
    Publication date: March 11, 2021
    Inventors: Hiroyuki KOJIMA, Masafumi NAKATA
  • Patent number: 10818278
    Abstract: A resonance signal generating method includes generating a first resonance signal of a first pitch circulating through first loop processing by inputting a first excitation signal to the first loop processing including first delay that delays the signal by a time corresponding to the first pitch and first attenuation that attenuates the signal, the first pitch being a pitch having a resonance frequency of a predetermined speaking length of a piano, generating a second resonance signal of a second pitch circulating through second loop processing by inputting a second excitation signal to the second loop processing including second delay that delays the signal by a time corresponding to the second pitch and second attenuation that attenuates the signal, the second pitch not being a pitch having a resonance frequency of any of speaking lengths of the piano or a pitch of a harmonic thereof but being higher than the first pitch, and outputting the first resonance signal circulating through the first loop processin
    Type: Grant
    Filed: July 17, 2019
    Date of Patent: October 27, 2020
    Assignee: Yamaha Corporation
    Inventors: Encai Liu, Masafumi Nakata
  • Patent number: 10805475
    Abstract: A resonance sound signal generation device comprises a designation receiver that receives designation of a pitch, a sound signal instructor that provides an instruction for generating a sound signal corresponding to the designated pitch, a producer that produces a resonance sound signal representing a resonance sound based on a plurality of pitches, a determiner that determines whether another pitch is designated at a time of designation of one pitch, and a resonance sound instructor that instructs the producer to produce a resonance sound signal of the one pitch and a resonance sound signal of the another pitch based on the one pitch and the another pitch when determination is made that the another pitch is designated at the time of designation of the one pitch, and does not instruct the producer to produce resonance sound signals when determination is made that the another pitch is not designated at the time of designation of the one pitch.
    Type: Grant
    Filed: October 4, 2019
    Date of Patent: October 13, 2020
    Assignee: YAMAHA CORPORATION
    Inventors: Takaaki Makino, Masafumi Nakata
  • Publication number: 20200112642
    Abstract: A resonance sound signal generation device comprises a designation receiver that receives designation of a pitch, a sound signal instructor that provides an instruction for generating a sound signal corresponding to the designated pitch, a producer that produces a resonance sound signal representing a resonance sound based on a plurality of pitches, a determiner that determines whether another pitch is designated at a time of designation of one pitch, and a resonance sound instructor that instructs the producer to produce a resonance sound signal of the one pitch and a resonance sound signal of the another pitch based on the one pitch and the another pitch when determination is made that the another pitch is designated at the time of designation of the one pitch, and does not instruct the producer to produce resonance sound signals when determination is made that the another pitch is not designated at the time of designation of the one pitch.
    Type: Application
    Filed: October 4, 2019
    Publication date: April 9, 2020
    Inventors: Takaaki MAKINO, Masafumi NAKATA
  • Publication number: 20190341012
    Abstract: A resonance signal generating method includes generating a first resonance signal of a specific pitch circulating through first loop processing by inputting an excitation signal to the first loop processing including first delay that delays the signal by a time corresponding to the specific pitch and first attenuation that attenuates the signal, generating a second resonance signal of the specific pitch circulating through second loop processing by the second loop processing including second delay that delays the signal by a time corresponding to the specific pitch and second attenuation that attenuates the signal, generating an attenuation change signal by adding the first resonance signal and the second resonance signal to each other, attenuating and inverting the added first and second resonance signals, and inputting the generated attenuation change signal to the first loop processing and the second loop processing respectively, and outputting the first resonance signal.
    Type: Application
    Filed: July 17, 2019
    Publication date: November 7, 2019
    Inventors: Encai LIU, Masafumi NAKATA
  • Publication number: 20190341013
    Abstract: A resonance signal generating method includes generating a first resonance signal of a first pitch circulating through first loop processing by inputting a first excitation signal to the first loop processing including first delay that delays the signal by a time corresponding to the first pitch and first attenuation that attenuates the signal, the first pitch being a pitch having a resonance frequency of a predetermined speaking length of a piano, generating a second resonance signal of a second pitch circulating through second loop processing by inputting a second excitation signal to the second loop processing including second delay that delays the signal by a time corresponding to the second pitch and second attenuation that attenuates the signal, the second pitch not being a pitch having a resonance frequency of any of speaking lengths of the piano or a pitch of a harmonic thereof but being higher than the first pitch, and outputting the first resonance signal circulating through the first loop processin
    Type: Application
    Filed: July 17, 2019
    Publication date: November 7, 2019
    Inventors: Encai LIU, Masafumi NAKATA
  • Patent number: 9478203
    Abstract: A resonance tone generation apparatus 20 is applied to an electronic musical instrument DM having a tone generator for generating a musical tone signal indicative of a piano sound in accordance with a tone generation instruction signal having a key number n, and a plurality of output portions for externally outputting a musical tone signal. The resonance tone generation apparatus 20 has a plurality of resonance tone generation circuits 30(n) each of which is assigned a different key number n, retrieves a musical tone signal indicative of a musical sound of the piano, generates a musical tone signal indicative of a resonance tone imitating a tone of a string of the piano resonated by the musical sound of the piano indicated by the retrieved musical tone signal, and supplies the generated musical tone signal to the plurality of output portions.
    Type: Grant
    Filed: January 29, 2015
    Date of Patent: October 25, 2016
    Assignee: Yamaha Corporation
    Inventor: Masafumi Nakata
  • Patent number: 9245506
    Abstract: A resonance tone generation apparatus 20 is applied to an electronic musical instrument DM having a tone generator for generating, in accordance with a tone generation instruction signal having a key number n, a musical tone signal indicative of a piano sound having a key tone pitch specified by the key number. In the resonance tone generation apparatus 20, the key numbers n are assigned. The resonance tone generation apparatus 20 has a plurality of resonance tone generation circuits 30(n) each being configured to have a plurality of resonance frequencies and each retrieving a musical tone signal indicative of a musical sound of the piano and generating a musical tone signal indicative of a resonance tone which imitates a sound of strings of the piano, the sound being resonated by the piano sound indicated by the retrieved musical tone signal.
    Type: Grant
    Filed: January 29, 2015
    Date of Patent: January 26, 2016
    Assignee: Yamaha Corporation
    Inventor: Masafumi Nakata
  • Publication number: 20150228261
    Abstract: A resonance tone generation apparatus 20 is applied to an electronic musical instrument DM having a tone generator for generating, in accordance with a tone generation instruction signal having a key number n, a musical tone signal indicative of a piano sound having a key tone pitch specified by the key number. In the resonance tone generation apparatus 20, the key numbers n are assigned. The resonance tone generation apparatus 20 has a plurality of resonance tone generation circuits 30(n) each being configured to have a plurality of resonance frequencies and each retrieving a musical tone signal indicative of a musical sound of the piano and generating a musical tone signal indicative of a resonance tone which imitates a sound of strings of the piano, the sound being resonated by the piano sound indicated by the retrieved musical tone signal.
    Type: Application
    Filed: January 29, 2015
    Publication date: August 13, 2015
    Inventor: Masafumi NAKATA
  • Publication number: 20150221296
    Abstract: A resonance tone generation apparatus 20 is applied to an electronic musical instrument DM having a tone generator for generating a musical tone signal indicative of a piano sound in accordance with a tone generation instruction signal having a key number n, and a plurality of output portions for externally outputting a musical tone signal. The resonance tone generation apparatus 20 has a plurality of resonance tone generation circuits 30(n) each of which is assigned a different key number n, retrieves a musical tone signal indicative of a musical sound of the piano, generates a musical tone signal indicative of a resonance tone imitating a tone of a string of the piano resonated by the musical sound of the piano indicated by the retrieved musical tone signal, and supplies the generated musical tone signal to the plurality of output portions.
    Type: Application
    Filed: January 29, 2015
    Publication date: August 6, 2015
    Inventor: Masafumi NAKATA
  • Patent number: 5987162
    Abstract: An image processing method includes the steps of setting a predetermined concentric circular area of first and second image data as a workpiece image, dividing a plurality of pixels constituting the workpiece image in the concentric circular area into a concentric circuit arrangement and extracting the plurality of pixels, generating the plurality of pixels in the divided concentric circuit arrangement as a function of the central angular position of the concentric circle, computing the initial term resulting from subjecting the luminance of the plurality of pixels in the concentric circular arrangement to Fourier expansion together with the central angular position, computing the central angular position where the initial term of Fourier expansion is maximized as a function of a plurality of concentric radii, and comparing the function with the first and second image data so as to recognize the arrangement of an object to be detected.
    Type: Grant
    Filed: September 27, 1996
    Date of Patent: November 16, 1999
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventor: Masafumi Nakata
  • Patent number: 5761068
    Abstract: A machining path in die sinking electrospark machining is more precisely checked before actual machining by displaying shaded images of a machined surface of a workpiece during and after die sinking electrospark machining, whereby and faulty machining operation in die sinking electrospark machining is minimized.
    Type: Grant
    Filed: February 29, 1996
    Date of Patent: June 2, 1998
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventor: Masafumi Nakata
  • Patent number: 5532933
    Abstract: A CAD/CAM system comprises a removal shape extraction section for extracting removal shape data from the defined finish shape data and work shape data, and a machining step generation section for generating a machining step for each machining surface Z height of the removal shape extracted by the removal shape extraction section.
    Type: Grant
    Filed: March 14, 1994
    Date of Patent: July 2, 1996
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventor: Masafumi Nakata