公开(公告)号：US20250014542A1

公开(公告)日：2025-01-09

申请号：US18348827

申请日：2023-07-07

Applicant: Yamaha Corporation

Inventor： Akira MAEZAWA ,  Alia MORSI

IPC: G10H1/00

Abstract: A musical performance evaluation system basically includes an audio input, a notification device and at least one processor. The audio input is configured to input a musical performance. The notification device outputs an evaluation of the musical performance received via the audio input. The at least one processor executes a musical performance evaluation program to identify errors in the musical performance based on reference data of segments of musical performances containing errors, classify the errors in the musical performance as either a conspicuous error or an inconspicuous error, and instruct the notification device to output the evaluation of the musical performance identifying a presence of conspicuous errors differently from inconspicuous errors.

公开(公告)号：US20230419929A1

公开(公告)日：2023-12-28

申请号：US18463059

申请日：2023-09-07

Applicant: Yamaha Corporation

Inventor： Akira MAEZAWA

IPC: G10H1/00

CPC classification number: G10H1/0008 ,  G10H1/0041

Abstract: A signal processing system causes a reproduction device to reproduce a time series signal that follows reproduction of a musical piece. The signal processing system includes an electronic controller including at least one processor. The electronic controller is configured to execute a plurality of units including an acquisition unit configured to acquire an indicated position indicated by a user in the reproduction of the musical piece, and a control unit configured to execute time stretching of the time series signal in accordance with the indicated position.

公开(公告)号：US20230410676A1

公开(公告)日：2023-12-21

申请号：US18362093

申请日：2023-07-31

Applicant: YAMAHA CORPORATION

Inventor： Akira MAEZAWA ,  Yuya TAKENAKA ,  Naoki YAMAMOTO ,  Satoshi OBATA

IPC: G09B15/00 ,  G10H1/00 ,  G06N20/00

CPC classification number: G09B15/002 ,  G10H1/0008 ,  G06N20/00 ,  G10H2250/311 ,  G10H2210/066 ,  G10H2210/061 ,  G10H2210/091 ,  G10H2210/571

Abstract: An information processing system (a) acquires user playing data indicative of playing of a piece of music by a user, (b) generates habit data indicative of a playing habit of the user in playing the piece of music on a musical instrument, by inputting the acquired user playing data into at least one first trained model that learns a relationship between (i) player playing training data indicative of playing of a piece of reference music by a player, and (ii) corresponding training habit data indicative of a playing habit of the player in playing the piece of reference music on a musical instrument, the playing habit being indicated by the player playing training data; and (c) identifies a practice phrase based on the generated habit data.

公开(公告)号：US20220414472A1

公开(公告)日：2022-12-29

申请号：US17901129

申请日：2022-09-01

Applicant: Yamaha Corporation

Inventor： Akira MAEZAWA

IPC: G06N3/08 ,  G10H1/00 ,  G06T7/246

Abstract: A computer-implemented method includes obtaining a trained model trained to store a relationship between first performance data and first evaluation data. The first performance data indicates a performance performed by a performer. The first evaluation data indicates a first evaluation of the performance. The first evaluation has been made by an audience who has received the performance. The method also includes obtaining second performance data. The method also includes processing the second performance data using the trained model to make an inference of a second evaluation of the second performance data. The method also includes outputting second evaluation data indicating the inference of the second evaluation.

公开(公告)号：US20190237055A1

公开(公告)日：2019-08-01

申请号：US16376714

申请日：2019-04-05

Applicant: Yamaha Corporation

Inventor： Akira MAEZAWA

IPC: G10H1/40 ,  G10H1/00

Abstract: A performance control method includes estimating a performance position in a musical piece by analyzing a performance of the musical piece by a performer, causing a performance device to execute an automatic performance in accordance with performance data designating the performance content of the musical piece so as to be synchronized with the progress of the performance position, and controlling the relationship between the progress of the performance position and the automatic performance in accordance with control data that is independent of the performance data.

公开(公告)号：US20140260911A1

公开(公告)日：2014-09-18

申请号：US14207816

申请日：2014-03-13

Applicant: YAMAHA CORPORATION

Inventor： Akira MAEZAWA

IPC: G10H7/00

CPC classification number: G10H7/002 ,  G10H1/00 ,  G10H1/40 ,  G10H7/00 ,  G10H2210/046 ,  G10H2210/061 ,  G10H2210/076 ,  G10H2210/101 ,  G10H2210/375 ,  G10H2250/015

Abstract: A sound signal analysis apparatus 10 includes sound signal input portion for inputting a sound signal indicative of a musical piece, tempo detection portion for detecting a tempo of each of sections of the musical piece by use of the input sound signal, judgment portion for judging stability of the tempo, and control portion for controlling a certain target in accordance with a result judged by the judgment portion.

Abstract translation: 声音信号分析装置10包括用于输入指示乐曲的声音信号的声音信号输入部分，用于通过使用输入声音信号来检测乐曲的每个部分的节奏的速度检测部分，用于判断稳定性的判断部分 以及用于根据由判断部分判断的结果来控制某个目标的控制部分。

公开(公告)号：US20230059829A1

公开(公告)日：2023-02-23

申请号：US17979974

申请日：2022-11-03

Applicant: YAMAHA CORPORATION

Inventor： Akira MAEZAWA

IPC: H04B11/00

Abstract: A signal processing method includes: receiving, by a first reception unit, an acoustic signal transmitted via a first transmission path, the acoustic signal received by the first reception unit being a first acoustic signal; receiving, by a second reception unit, the acoustic signal transmitted via a second transmission path different from the first transmission path, the second transmission path having a longer delay time for transmission than the first transmission path, and the acoustic signal received by the second reception unit being a second acoustic signal; calculating, by a delay amount calculation unit, a transmission delay amount that is a relative delay amount between the first acoustic signal and the second acoustic signal; and delaying, by a delay amount addition unit, the first acoustic signal based on the calculated transmission delay amount and outputting the delayed first acoustic signal.

公开(公告)号：US20230009481A1

公开(公告)日：2023-01-12

申请号：US17946176

申请日：2022-09-16

Applicant: Yamaha Corporation

Inventor： Akira MAEZAWA

IPC: G10H1/00

Abstract: A computer-implemented method includes obtaining a trained model trained to store a relationship between first performance information and evaluation information. The first performance information includes a plurality of performance units. The evaluation information includes a plurality of pieces of evaluation information respectively associated with the plurality of performance units. The method also includes obtaining second performance information including an evaluation of each performance unit of the plurality of performance units. The method also includes processing the second performance information using the trained model to infer the evaluation of the each performance unit.

公开(公告)号：US20220005443A1

公开(公告)日：2022-01-06

申请号：US17480004

申请日：2021-09-20

Applicant: Yamaha Corporation

Inventor： Akira MAEZAWA

IPC: G10G3/04

Abstract: A music analysis method realized by a computer includes calculating an evaluation index of each of a plurality of structure candidates formed of N analysis points selected in different combinations from K analysis points in an audio signal of a musical piece, and selecting one of the plurality of structure candidates as a boundary of a structure section of the musical piece in accordance with the evaluation index of each of the plurality of structure candidates. N is a natural number greater than or equal to 2 and less than K, and K is a natural number greater than or equal to 2.

公开(公告)号：US20210335331A1

公开(公告)日：2021-10-28

申请号：US17367925

申请日：2021-07-06

Applicant: YAMAHA CORPORATION ,  Tokyo University of the Arts

Inventor： Akira MAEZAWA ,  Motoichi TAMURA ,  Takuya FUJISHIMA ,  Takashi KIRIYAMA ,  Noriko KOSHIDA ,  Toshiyuki KUWABARA ,  Teruyo UEHIRA ,  Ryoya USUHA

IPC: G10H1/00

Abstract: An image control system includes an estimation circuit, an obtaining circuit, and an image control circuit, which circuits can be at least one processor. The estimation circuit receives an output from a trained model in response to an input of an acoustic signal indicating a performance of a musical piece. The estimation circuit estimates musical performance information based on the output. The musical performance information is associated with the performance indicated by the acoustic signal relative to the musical piece. The obtaining circuit obtains manipulation information that is associated with a playback of an image. The image control circuit controls the playback of the image based on the musical performance information. The image control circuit controls the playback of the image based on the manipulation information upon obtaining the manipulation information.