公开(公告)号：US20240147152A1

公开(公告)日：2024-05-02

申请号：US18392325

申请日：2023-12-21

Applicant: Yamaha Corporation

Inventor： Kenji ISHIZUKA

IPC: H04R3/02

CPC classification number: H04R3/02

Abstract: A computer-implemented sound processing method includes: acquiring a first audio signal representative of sound received by a sound receiving device; and generating a second audio signal by rotating a phase of the first audio signal in one direction over time in conjunction with receipt of the sound.

公开(公告)号：US20240007815A1

公开(公告)日：2024-01-04

申请号：US18340183

申请日：2023-06-23

Applicant: YAMAHA CORPORATION

Inventor： Keiichiro SOMA ,  Arata IMAI ,  Takeshi NONAKA ,  Masaaki OKABAYASHI ,  Yu TAKAHASHI ,  Kotaro TERADA ,  Kenji ISHIZUKA

IPC: H04S7/00 ,  G06F3/16 ,  H04S3/00 ,  H03G3/30

CPC classification number: H04S7/30 ,  H04S7/40 ,  G06F3/165 ,  H04S3/008 ,  H03G3/3005 ,  H04S2400/01 ,  H04S2400/13 ,  H03G2201/103

Abstract: An audio signal processing method for a mixing apparatus including a plurality of channels, the audio signal processing method includes selecting at least a first channel among the plurality of channels, inputting an audio signal of the selected first channel, specifying setting data to be set to the mixing apparatus, based on time-series sound volume data for the first channel, or data on a second channel different from the first channel, among the plurality of channels, and outputting the specified setting data.

公开(公告)号：US20230289136A1

公开(公告)日：2023-09-14

申请号：US18172114

申请日：2023-02-21

Applicant: YAMAHA CORPORATION

Inventor： Kenji ISHIZUKA

IPC: G06F3/16

CPC classification number: G06F3/167 ,  G06F3/162

Abstract: A method of controlling an audio device identifies an external user of the audio device by communicating with an information processing apparatus, receives, by the audio device, setting information of the audio device corresponding to the identified external user, and controls the audio device based on the received setting information of the audio device.

公开(公告)号：US20220215822A1

公开(公告)日：2022-07-07

申请号：US17703697

申请日：2022-03-24

Applicant: YAMAHA CORPORATION

Inventor： Yoshifumi MIZUNO ,  Yu TAKAHASHI ,  Kazunobu KONDO ,  Kenji ISHIZUKA

IPC: G10H3/12 ,  G10H1/00

Abstract: An audio processing method obtains observed envelopes of picked-up sound signals including a first observed envelope representing a contour of a first sound signal including a first target sound from a first sound source and a second spill sound from a second sound source and a second observed envelope representing a contour of a second sound signal including a second target sound from the second sound source and a first spill sound from the first sound source; and generates, based on the observed envelopes, output envelopes including a first output envelope representing a contour of the first target sound in the first observed envelope and a second output envelope representing a contour of the second target sound in the second observed envelope, using a mix matrix including a mix proportion of the second spill sound in the first sound signal and a mix proportion of the first spill sound in the second sound signal.

公开(公告)号：US20210014609A1

公开(公告)日：2021-01-14

申请号：US17028187

申请日：2020-09-22

Applicant: Yamaha Corporation

Inventor： Kenji ISHIZUKA ,  Kenichi TAMIYA ,  Takashi MITA ,  Shinichiro KANEKO

IPC: H04R3/04 ,  H03H17/02

Abstract: A system for implementing filter control includes an audio processing apparatus, an analog-to-digital converter, a digital-to-analog converter, a filter, and a processor. The processor is configured to receive parameters that define a frequency response in a given frequency bandwidth. The processor is also configured to generate, based on the parameters, a response curve representative of a frequency response of a filter. The processor is also configured to generate, based on the response curve, a filter coefficient of the filter. The lower inclined portion corresponds to, within the given frequency bandwidth, a frequency bandwidth that is lower than a frequency bandwidth corresponding to the upper inclined portion.

公开(公告)号：US20240062435A1

公开(公告)日：2024-02-22

申请号：US18468784

申请日：2023-09-18

Applicant: YAMAHA CORPORATION

Inventor： Kenji ISHIZUKA ,  Hidetaka IMAMURA ,  Keijiro SAINO ,  Taiki SHIMOZONO

IPC: G06T11/00 ,  G06T7/20 ,  G06T13/40 ,  G06T17/00

CPC classification number: G06T11/00 ,  G06T7/20 ,  G06T13/40 ,  G06T17/00

Abstract: An image generation device is for a live distribution system that distributes, in real-time, a piece of music performed by a performer to terminal devices of a plurality of viewers through a communication network. The image generation circuit includes an obtaining circuit and an image generation circuit. The obtaining circuit obtains motion information regarding a motion of a first viewer of the distributed piece of music. The image generation circuit generates an image showing at least one avatar group that is being caused to motion based on the motion information in an imaginary space that corresponds to a performance of the piece of music. Each of the at least one avatar group includes avatars of a plurality of viewers.

公开(公告)号：US20240422496A1

公开(公告)日：2024-12-19

申请号：US18821581

申请日：2024-08-30

Applicant: Yamaha Corporation

Inventor： Kenji ISHIZUKA

IPC: H04S7/00 ,  G06F3/16 ,  H04S3/00

Abstract: A sound signal processing method includes receiving, from a distribution source, a sound signal, and a first parameter of a first signal processing to be applied to the sound signal, detecting a first acoustic characteristic of a listener's reproduction environment, adjusting a second parameter based on the first parameter and the first acoustic characteristic, and applying a second signal processing on the sound signal based on the second parameter, thereby obtaining a reproduction sound signal to be reproduced in the reproduction environment.

公开(公告)号：US20230008531A1

公开(公告)日：2023-01-12

申请号：US17946887

申请日：2022-09-16

Applicant: Yamaha Corporation

Inventor： Satoshi SENDO ,  Kenji ISHIZUKA

IPC: H04R3/04 ,  G06F3/16 ,  H03H17/06

Abstract: A filter control method controls a filter that controls frequency characteristics of a sound signal over a plurality of bands. The filter control method is implemented by a computer. The filter control method includes accepting a specifying operation from a user to specify a latency of the filter as a desired latency of the filter, accepting a setting operation from the user to set desired values of two or more parameters, which include phase characteristics and gain, for a respective band among the plurality of bands within a limit range determined based on the desired latency, and generating coefficients for the filter based on the desired values of the two or more parameters for the respective band.

公开(公告)号：US20220007124A1

公开(公告)日：2022-01-06

申请号：US17478250

申请日：2021-09-17

Applicant: YAMAHA CORPORATION

Inventor： Kenji ISHIZUKA

IPC: H04R29/00 ,  G10L25/51

Abstract: An appropriate level index is obtained from an input audio waveform. An audio signal processing method includes detecting one or more level values in each of a plurality of attack sections included in an audio signal including the plurality of attack sections and a plurality of non-attack sections different from the plurality of attack sections; and generating a histogram of the detected level values in each of the plurality of attack sections, the generated histogram excluding level values of the plurality of non-attack sections.

公开(公告)号：US20240420721A1

公开(公告)日：2024-12-19

申请号：US18821808

申请日：2024-08-30

Applicant: Yamaha Corporation

Inventor： Yu TAKAHASHI ,  Kenji ISHIZUKA

IPC: G10L21/0272

Abstract: An audio processing method that is realized by a computer system includes acquiring a first audio signal including percussive components and non-percussive components, and serially executing a plurality of stages of adaptive notch filter processing on the first audio signal, thereby generating a second audio signal in which the non-percussive components in the first audio signal are suppressed.