公开(公告)号：US20210295806A1

公开(公告)日：2021-09-23

申请号：US17191916

申请日：2021-03-04

Applicant: CASIO COMPUTER CO., LTD.

Inventor： Goro SAKATA

IPC: G10H1/053 ,  G10H1/08 ,  G10H1/34 ,  G10H1/00 ,  G10H1/12

Abstract: An electronic keyboard musical instrument includes a sound source configured to, in response to detection of key-pressing of the first key in damper-off detection, input first excitation signal data corresponding to the first key to a first channel, input first channel output data which is output from the first channel to each of low-register channels corresponding to the respective low-register keys, and output musical sound data which is generated based on respective pieces of low-register channel output data which is output from the respective low-register channels and the first channel output data, as musical sound data corresponding to the first key.

公开(公告)号：US20190096376A1

公开(公告)日：2019-03-28

申请号：US16124609

申请日：2018-09-07

Applicant: CASIO COMPUTER CO., LTD.

Inventor： Goro SAKATA

IPC: G10H5/00 ,  H03M3/00

Abstract: A digital-to-analog converter performs a ΔΣ computation process to start the ΔΣ computation based upon the second clock signal with respect to the digital data of music sound if the ΔΣ computation is not under execution when the control signal is outputted by the signal output process, a control process to inhibit the ΔΣ computation based upon the second clock signal from being started with respect to the digital data of music sound until the ΔΣ computation is not under execution when the ΔΣ computation is under execution, and an output process to convert a computation result of the ΔΣ computation process into an analog signal and output the analog signal.

公开(公告)号：US20180182365A1

公开(公告)日：2018-06-28

申请号：US15845805

申请日：2017-12-18

Applicant: CASIO COMPUTER CO., LTD.

Inventor： Goro SAKATA

IPC: G10H1/34 ,  G10H1/00 ,  G10H1/053

CPC classification number: G10H1/348 ,  G10H1/0008 ,  G10H1/053 ,  G10H1/08 ,  G10H1/125 ,  G10H2210/271 ,  G10H2220/221 ,  G10H2250/105

Abstract: A musical note generation device includes at least one processor that performs a process of generating attenuated sound waveform data by respectively reducing, among frequency components included in first sound waveform data corresponding to pitch information associated with a specified key, amplitudes of respective frequency components of a fundamental tone and harmonics of the fundamental tone corresponding to a pitch indicated by the pitch information; a process that convolves the generated attenuated sound waveform data generated with second sound waveform data corresponding to at least one of a high sound range side impulse response and a low sound range side impulse response, so as to generate third sound waveform data; and a process of outputting piano sound waveform data generated on the basis of the third sound waveform data generated by the convolution process.

公开(公告)号：US20170076707A1

公开(公告)日：2017-03-16

申请号：US15265820

申请日：2016-09-14

Applicant: CASIO COMPUTER CO., LTD.

Inventor： Goro SAKATA

IPC: G10H7/00 ,  G10H7/04 ,  G06F17/30

CPC classification number: G10H7/008 ,  G06F17/30778 ,  G10H1/0041 ,  G10H7/02 ,  G10H7/04 ,  G10H2240/071 ,  G10H2240/131 ,  G10H2240/161 ,  G10H2250/595 ,  G10H2250/601 ,  G10L19/167 ,  G11B20/1251

Abstract: A waveform data structure includes a plurality of types of frames having different data sizes. Each of the plurality of types of frames includes an auxiliary information area and a data area. The auxiliary information area includes an area for storing common effective-bit length data for a section of waveform samples, and an area for storing an identifier for identifying one of the plurality of types of frames. The data area is an area for storing extracted waveform samples which are extracted from the waveform samples based on the common effective-bit length. The number of the extracted waveform samples is determined based on the common effective-bit length.

Abstract translation: 波形数据结构包括具有不同数据大小的多种类型的帧。 多个类型的帧中的每一个包括辅助信息区和数据区。 辅助信息区域包括用于存储一部分波形采样的公共有效位长度数据的区域和用于存储用于识别多种类型的帧之一的标识符的区域。 数据区域是用于存储基于公共有效位长度从波形采样中提取的提取的波形样本的区域。 基于公共有效位长度来确定提取的波形样本的数量。

公开(公告)号：US20150059557A1

公开(公告)日：2015-03-05

申请号：US14467286

申请日：2014-08-25

Applicant: CASIO COMPUTER CO., LTD.

Inventor： Goro SAKATA ,  Akira IKEDA

IPC: G10H1/34 ,  G10H1/02

CPC classification number: G10H1/34 ,  G10H2220/285 ,  G10H2220/295

Abstract: In a touch detection apparatus 50, the controller 51 predicts damper-on arrival time as time of arrival of generation of a damper-on event based on a period of time counted by a first counter 54 from when a second contact point 160b is turned off until when a first contact point 160a is turned off. The second counter 55 counts time to be compared to the damper-on arrival time. The comparator circuit 58 compares the time counted by the second counter 55 and the damper-on arrival time. If the time counted by the second counter 55 and the damper-on arrival time agree with each other, the comparator circuit 58 transmits a key release agreement signal triggering generation of a damper-on event to the controller 51. If the key release agreement signal is transmitted from the comparator circuit 58, the controller 51 executes control to generate a damper-on event.

Abstract translation: 在触摸检测装置50中，控制器51基于从第一计数器54计数的时间从第二接触点160b关闭的时间段预测作为阻尼器接通事件的产生的到达时间的阻尼器到达时间 直到第一接触点160a关闭。 第二计数器55计算要与阻尼器到达时间进行比较的时间。 比较器电路58比较由第二计数器55计数的时间和阻尼器到达时间。 如果由第二计数器55计算的时间和阻尼器到达时间彼此一致，则比较器电路58向控制器51发送触发产生阻尼器开启事件的密钥释放协议信号。如果密钥释放协议信号 从比较器电路58发送，控制器51执行控制以产生阻尼器接通事件。

公开(公告)号：US20130246073A1

公开(公告)日：2013-09-19

申请号：US13727370

申请日：2012-12-26

Applicant: CASIO COMPUTER CO., LTD.

Inventor： Goro SAKATA

IPC: G10L19/04

CPC classification number: G10L19/04 ,  G10H1/0041 ,  G10H7/002 ,  G10H2230/041 ,  G10H2250/601 ,  G10L19/08 ,  H03M7/30

Abstract: For respective sampling data of waveform data of sounds to be coded, a prediction residual value is calculated as sampling residual data, and an effective bit length is calculated from this residual waveform data. Then, for the effective bit length data, a maximum effective bit length among processing targets is generated as common effective actual data, and coded data in which this common effective actual data and information indicating the common effective bit length are arranged in a predetermined configuration format are generated. The information included in the coded data is analyzed and each of the plurality of the common effective bit information is extracted. Then, waveform data of the sounds are decoded by performing inverse linear prediction processing from an analysis result on the residual waveform data decompressed by performing bit extension which adds a portion other than the common effective bit length.

Abstract translation: 对于要编码的声音的波形数据的各个采样数据，计算预测残差值作为采样残差数据，并根据该残差波形数据计算有效位长度。 然后，对于有效比特长度数据，生成作为公共有效实际数据的处理对象之间的最大有效比特长度，以及其中表示公共有效比特长度的公共有效实际数据和信息以预定配置格式排列的编码数据 被生成。 分析包含在编码数据中的信息，并且提取多个公共有效位信息中的每一个。 然后，通过对通过添加除了公共有效位长度以外的部分的比特扩展进行解压缩的残差波形数据的分析结果进行逆线性预测处理来解码声音的波形数据。

公开(公告)号：US20130239786A1

公开(公告)日：2013-09-19

申请号：US13727383

申请日：2012-12-26

Applicant: CASIO COMPUTER CO., LTD.

Inventor： Goro SAKATA

IPC: G10H1/02

CPC classification number: G10H1/02 ,  G10H1/344 ,  G10H1/346 ,  G10H2220/271 ,  G10H2220/281 ,  G10H2220/285

Abstract: A first contact and a second contact are provided at each of a plurality of keys, and are successively closed in accordance with a key press operation. On the basis of respective closed sense signals from the first contact and the second contact, a duration from when the first contact is closed until the second contact is closed is counted as a first count value and then a duration after this counting has ended is counted as a second count value. An attainment duration value and the second count value are compared, and when a predetermined condition is satisfied, a control signal is outputted. When this control signal is received, sound emission information instructing an emission of a sound by a sound emission controller is sent. The sound emission information includes touch information based on the first count value.

Abstract translation: 在多个键的每一个上设置有第一触点和第二触点，并且按照按键操作连续关闭。 基于来自第一触点和第二触点的各个闭合感测信号，从第一触点闭合直到第二触点闭合的持续时间被计数为第一计数值，然后对该计数结束之后的持续时间进行计数 作为第二计数值。 比较达到持续时间值和第二计数值，并且当满足预定条件时，输出控制信号。 当接收到该控制信号时，发送指示声音发射控制器发出声音的声音发射信息。 声音发射信息包括基于第一计数值的触摸信息。