Patents by Inventor Hiromi Sotome
Hiromi Sotome 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: 8542862Abstract: A flat acoustic transducer (100) includes a permanent magnet (10) and a magnetic member (20), which are arranged adjacent to each other with a predetermined interval, a flat vibrating membrane (30), provided facing the permanent magnet (10) and the magnetic member (20), and at least one coil (40), fixed to the vibrating membrane (30). In the flat acoustic transducer (100), an electrical signal is applied to the coil (40), to obtain vibration force (F) on the vibrating membrane (30) by way of a magnetic flux ? generated between a magnetic pole face (12) of the permanent magnet (10) and the magnetic member (20), a step (50) is provided between the magnetic pole face (12) and the upper face (22) of the magnetic member (20), while at least part of a winding (42) of the coil (40) at the time of no application of an electrical signal is arranged inside the step (50).Type: GrantFiled: November 30, 2009Date of Patent: September 24, 2013Assignee: FPS Inc.Inventors: Fumihito Meguro, Tomomi Nakatsuka, Masashi Hori, Hiromi Sotome, Masahiro Iwata, Kuniyuki Kobayashi
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Publication number: 20110235848Abstract: A flat acoustic transducer (100) includes a permanent magnet (10) and a magnetic member (20), which are arranged adjacent to each other with a predetermined interval, a flat vibrating membrane (30), provided facing the permanent magnet (10) and the magnetic member (20), and at least one coil (40), fixed to the vibrating membrane (30). In the flat acoustic transducer (100), an electrical signal is applied to the coil (40), to obtain vibration force (F) on the vibrating membrane (30) by way of a magnetic flux ? generated between a magnetic pole face (12) of the permanent magnet (10) and the magnetic member (20), a step (50) is provided between the magnetic pole face (12) and the upper face (22) of the magnetic member (20), while at least part of a winding (42) of the coil (40) at the time of no application of an electrical signal is arranged inside the step (50).Type: ApplicationFiled: November 30, 2009Publication date: September 29, 2011Applicants: SUMIDA CORPORATION, FPS INC.Inventors: Fumihito Meguro, Tomomi Nakatsuka, Masashi Hori, Hiromi Sotome, Masahiro Iwata, Kuniyuki Kobayashi
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Patent number: 7082201Abstract: A three-dimensional sound reproducing apparatus is configured by cascading a sound field effect adding unit and a crosstalk canceling unit. The sound field effect adding unit adds a predetermined three-dimensional sound field effect to an input audio signal, thereby generating audio signals respectively corresponding to left and right channels. The crosstalk canceling unit performs a calculation process on the audio signals of the two channels so that, when the audio signals are respectively generated by two loudspeakers positioned in front of a listener, the audio signals reach the left and right ears of the listener without producing crosstalk. The resulting audio signals are supplied to the loudspeakers, respectively.Type: GrantFiled: August 30, 2002Date of Patent: July 25, 2006Assignee: Yamaha CorporationInventors: Hiromi Sotome, Shigeo Ando, Shinichi Muramatsu, Akio Takahashi
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Patent number: 7076068Abstract: A three-dimensional sound reproducing apparatus is configured by cascading a sound field effect adding unit and a crosstalk canceling unit. The sound field effect adding unit adds a predetermined three-dimensional sound field effect to an input audio signal, thereby generating audio signals respectively corresponding to left and right channels. The crosstalk canceling unit performs a calculation process on the audio signals of the two channels so that, when the audio signals are respectively generated by two loudspeakers positioned in front of a listener, the audio signals reach the left and right ears of the listener without producing crosstalk. The resulting audio signals are supplied to the loudspeakers, respectively.Type: GrantFiled: November 25, 2002Date of Patent: July 11, 2006Assignee: Yamaha CorporationInventors: Hiromi Sotome, Shigeo Ando, Shinichi Muramatsu, Akio Takahashi, Hiroshi Iriyama
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Patent number: 6850621Abstract: A three-dimensional sound reproducing apparatus is configured by cascading a sound field effect adding unit and a crosstalk canceling unit. The sound field effect adding unit adds a predetermined three-dimensional sound field effect to an input audio signal, thereby generating audio signals respectively corresponding to left and right channels. The crosstalk canceling unit performs a calculation process on the audio signals of the two channels so that, when the audio signals are respectively generated by two loudspeakers positioned in front of a listener, the audio signals reach the left and right ears of the listener without producing crosstalk. The resulting audio signals are supplied to the loudspeakers, respectively.Type: GrantFiled: June 19, 1997Date of Patent: February 1, 2005Assignee: Yamaha CorporationInventors: Hiromi Sotome, Shigeo Ando, Shinichi Muramatsu, Akio Takahashi
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Patent number: 6731765Abstract: A loudspeaker device includes left and right channel loudspeaker units which are disposed on left and right sides in close proximity to each other, and a partition member projecting forwardly in the direction of propagation of sound from the loudspeaker units by a predetermined distance from a position between the loudspeaker units on a plane of a baffle on which the loudspeaker units are mounted.Type: GrantFiled: September 24, 1997Date of Patent: May 4, 2004Assignee: Yamaha CorporationInventor: Hiromi Sotome
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Publication number: 20030086572Abstract: A three-dimensional sound reproducing apparatus is configured by cascading a sound field effect adding unit and a crosstalk canceling unit. The sound field effect adding unit adds a predetermined three-dimensional sound field effect to an input audio signal, thereby generating audio signals respectively corresponding to left and right channels. The crosstalk canceling unit performs a calculation process on the audio signals of the two channels so that, when the audio signals are respectively generated by two loudspeakers positioned in front of a listener, the audio signals reach the left and right ears of the listener without producing crosstalk. The resulting audio signals are supplied to the loudspeakers, respectively.Type: ApplicationFiled: November 25, 2002Publication date: May 8, 2003Applicant: YAMAHA CORPORATIONInventors: Hiromi Sotome, Shigeo Ando, Shinichi Muramatsu, Akio Takahashi, Hiroshi Iriyama
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Publication number: 20030053633Abstract: A three-dimensional sound reproducing apparatus is configured by cascading a sound field effect adding unit and a crosstalk canceling unit. The sound field effect adding unit adds a predetermined three-dimensional sound field effect to an input audio signal, thereby generating audio signals respectively corresponding to left and right channels. The crosstalk canceling unit performs a calculation process on the audio signals of the two channels so that, when the audio signals are respectively generated by two loudspeakers positioned in front of a listener, the audio signals reach the left and right ears of the listener without producing crosstalk. The resulting audio signals are supplied to the loudspeakers, respectively.Type: ApplicationFiled: August 30, 2002Publication date: March 20, 2003Applicant: YAMAHA CORPORATIONInventors: Hiromi Sotome, Shigeo Ando, Shinichi Muramatsu, Akio Takahashi
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Publication number: 20010012367Abstract: A three-dimensional sound reproducing apparatus is configured by cascading a sound field effect adding unit and a crosstalk canceling unit. The sound field effect adding unit adds a predetermined three-dimensional sound field effect to an input audio signal, thereby generating audio signals respectively corresponding to left and right channels. The crosstalk canceling unit performs a calculation process on the audio signals of the two channels so that, when the audio signals are respectively generated by two loudspeakers positioned in front of a listener, the audio signals reach the left and right ears of the listener without producing crosstalk. The resulting audio signals are supplied to the loudspeakers, respectively.Type: ApplicationFiled: June 19, 1997Publication date: August 9, 2001Applicant: YAMAHA CORPORATIONInventors: HIROMI SOTOME, SHIGEO ANDO, SHINICHI MURAMATSU, AKIO TAKAHASHI, HIROSHI IRIYAMA
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Patent number: 5365468Abstract: A sampling frequency converter includes an oversampling circuit for oversampling an input sample train, a Random Access Memory (RAM), a write control circuit for writing oversampled data in the RAM with a clock synchronized with the oversampled data, a sampling frequency ratio measuring circuit for measuring a frequency ratio of a sampling frequency of the input sample train and a sampling frequency of an output sample train, a read control circuit for reading from the RAM the oversampled data used for obtaining interpolation data at two points before and after an output sample value which realizes the measured sampling frequency ratio by a polynomial interpolation, a polynomial interpolation circuit for obtaining the interpolation data at the two points by the polynomial interpolation on the basis of the oversampled data read from the RAM by the read control circuit, and a linear interpolation circuit for linear-interpolating between the polynomial interpolation data at the two points and thereby obtaining tType: GrantFiled: September 14, 1993Date of Patent: November 15, 1994Assignee: Yamaha CorporationInventors: Yuji Kakubo, Shigeki Kimura, Hiromi Sotome, Koji Niimi
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Patent number: 5146507Abstract: An audio reproduction characteristic control device reproduces various sound fields by producing reflected sounds of a reproduced source signal. Frequency response characteristic correction parameters for correcting a frequency response characteristic which varies with a reproduction environment to a standard characteristic or other predetermined characteristic is prestored in a memory and one of these parameters is read out in accordance with a designated reproduction environment and, if necessary, additionally with a designated sound field whereby the frequency response characteristic is corrected. In another aspect of the invention, reflected sound signals for front left, front right, rear left and rear right positions of a designated sound field are generated by operating input source signals with reflected sound characteristic parameters and these reflected sound signals are added to the source signals to be propagated from four directions in a space inside of an automobile.Type: GrantFiled: February 21, 1990Date of Patent: September 8, 1992Assignee: Yamaha CorporationInventors: Yuji Satoh, Hiromi Sotome, Yoshiki Fukazawa, Kiyoto Kuroiwa
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Patent number: 4999628Abstract: An analog-to-digital converting unit comprises an analog level varying circuit having a plurality of gains and varying a magnitude of an analog input signal for producing a plurality of analog output signals different in magnitude from one another with the respective gains, a plurality of analog-to-digital converting circuits respectively supplied with the analog output signals and producing a plurality of digital code signals, respectively, a controlling circuit supplied with two of the digital code signals and calculating a difference therebetween for producing a first control signal indicative of varying one of the digital code signals in value so as to be equal in value to the other digital code signal, a calculating circuit responsive to the first control signal and causing one of the digital code signals to be varied in value for producing a candidate of a digital output signal, and an output circuit coupled to one of the analog-to-digital converting circuits and to the calculating circuit and supplyingType: GrantFiled: June 15, 1990Date of Patent: March 12, 1991Assignee: Yamaha CorporationInventors: Yuji Kakubo, Hiromi Sotome