公开(公告)号：EP0377459A2

公开(公告)日：1990-07-11

申请号：EP90100137.0

申请日：1990-01-04

申请人： YAMAHA CORPORATION

发明人： Kudo, Masaki ,  Ogi, Tokio ,  Yanase, Tsutomu ,  Ichiki, Tetsuji

IPC分类号： G10H7/00 ,  G10H1/08

CPC分类号： G10H7/008 ,  G10H1/08 ,  G10H2250/035

摘要： Two tone generators (20, 21) having different tone generation systems, e.g., PCM type and an FM type, are provided. There are tone generation modes designating combination of tone generation in these tone generators and one can be selected from among them. There are, for example, a simple mixing mode, a delay mode in which start of tone generation in one tone generator is delayed from that in the other and a crossfade mode in which a tone signal is generated first in one tone generator and tone generation is switched to the other tone generator and envelope levels of output tone signals of the two tone generators are crossfaded during a switching period. Delay time in the delay mode and switching time in the crossfade mode can be variably controlled in accordance with a key scaling and/or other factors. A tone may be generated at a sampling frequency synchronized with a pitch in one tone generator and at a sampling frequency which is not synchronized with the pitch in the other tone generator. A phase of one cycle may be divided into plural sections and a complex waveform can be generated by converting the phase address signal in accordance with a function peculiar to each phase section and accessing a waveform memory with the converted address signal.

摘要翻译： 提供了具有不同音调发生系统的两个音调发生器（20,21），例如PCM型和FM型。 有这些音调发生器中的音调生成组合的音调生成模式可以从其中选出。 例如，存在简单混合模式，其中一个音调发生器中的音调生成开始的延迟模式与另一个音调发生器中的音调生成开始延迟的延迟模式以及在一个音调发生器中首先产生音调信号的交叉渐变模式和音调生成 切换到另一音调发生器，并且在切换周期期间两个音调发生器的输出音信号的包络电平交叉渐变。 延迟模式下的延迟时间和交叉渐变模式中的切换时间可以根据键缩放和/或其他因素进行可变地控制。 可以以与一个音调发生器中的音调同步的采样频率和与另一音调发生器中的音调不同步的采样频率产生音调。 一个周期的相位可以分为多个部分，并且可以通过根据每个相位部分特有的功能转换相位地址信号并且利用转换的地址信号访问波形存储器来生成复合波形。

公开(公告)号：EP0377459B1

公开(公告)日：1996-05-15

申请号：EP90100137.0

申请日：1990-01-04

申请人： YAMAHA CORPORATION

发明人： Kudo, Masaki ,  Ogi, Tokio ,  Yanase, Tsutomu ,  Ichiki, Tetsuji

IPC分类号： G10H7/00 ,  G10H1/08

CPC分类号： G10H7/008 ,  G10H1/08 ,  G10H2250/035

公开(公告)号：EP0548046A2

公开(公告)日：1993-06-23

申请号：EP93100419.6

申请日：1987-04-14

申请人： YAMAHA CORPORATION

发明人： Suzuki, Hideo ,  Kudo, Masaki ,  Kurakake, Yasushi

IPC分类号： G10H7/12 ,  H03M3/04

CPC分类号： H03M3/042 ,  G10H1/0041 ,  G10H1/26 ,  G10H7/12 ,  G10H2250/595 ,  G10H2250/601

摘要： A musical tone generating apparatus utilizing a data compression method is disclosed. A musical tone is sampled and is converted into waveform data (S(n)). These waveform data (S(n)) are compressed into compressed data (C(n)) by a linear predictive coding method and further by a differential quantization method. The number of bits of each of the compressed data (C(n)) is thus significantly smaller than that of the waveform data (S(n)). Thereafter, a memory (2) stores the thus compressed data corresponding to an attack portion of the tone and a selected part of a sustain portion of the tone. Hence, it is possible to remarkably reduce the memory storage. When generating a musical tone, the memory (2) reads out the compressed data (C(n)) of the attack portion and thereafter repeatedly reads out the compressed data of the selected part. The read-out compressed data are sequentially decoded into the original digital data. Thus, the whole waveform of the musical tone is reproduced.

摘要翻译： 公开了一种利用数据压缩方法的乐音产生装置。 对乐音进行采样并转换为波形数据（S（n））。 这些波形数据（S（n））通过线性预测编码方法和差分量化方法被压缩为压缩数据（C（n））。 因此，压缩数据（C（n））中的每一个的比特数明显小于波形数据（S（n））的比特数。 此后，存储器（2）存储对应于音调的攻击部分的这样的压缩数据和音调的维持部分的选定部分。 因此，可以显着地减少存储器存储。 当产生乐音时，存储器（2）读出攻击部分的压缩数据（C（n）），然后重复地读出所选择的部分的压缩数据。 读出的压缩数据被顺序地解码成原始的数字数据。 因此，音乐的整个波形被再现。

公开(公告)号：EP2028643B1

公开(公告)日：2012-10-17

申请号：EP08169868.0

申请日：2002-02-15

申请人： Yamaha Corporation

发明人： Sakurada, Shinya ,  Iizuka, Akira ,  Hotta, Harumichi ,  Kawai, Shizuhiko ,  Tokuda, Kozo ,  Kudo, Masaki

IPC分类号： G10H1/00

CPC分类号： G10H1/0058 ,  G10H2240/311

公开(公告)号：EP2028643A2

公开(公告)日：2009-02-25

申请号：EP08169868.0

申请日：2002-02-15

申请人： Yamaha Corporation

发明人： Sakurada, Shinya ,  Iizuka, Akira ,  Hotta, Harumichi ,  Kawai, Shizuhiko ,  Tokuda, Kozo ,  Kudo, Masaki

IPC分类号： G10H1/00

CPC分类号： G10H1/0058 ,  G10H2240/311

摘要： A bus system interconnects a plurality of devices of various categories constituting an electronic music instrument apparatus for exchanging signals among the devices having unique addresses. The bus system has a serial clock line for transmission of a clock signal, and a serial data line for transfer of a data signal from a source device to a destination device in synchronization with the clock signal. The source device operates as a master to commence a communicating session such as to send the clock signal to the serial clock line and to send the data signal to the serial data line in synchronization with the clock signal. The destination device operates as a slave so as to receive the data signal based on the clock signal. The source device formulates the data signal containing a unique address specifying the destination device such that the destination device can receive the data signal exclusively from the source device. The unique address contains category information designating a category to which the destination device belongs and a sub-address specifying the destination device in the designated category.

摘要翻译： 总线系统将构成用于在具有唯一地址的设备之间交换信号的电子乐器装置的各种类型的设备互连。 总线系统具有用于传输时钟信号的串行时钟线和用于与时钟信号同步地将数据信号从源设备传送到目的地设备的串行数据线。 源设备作为主机操作以开始通信会话，例如将时钟信号发送到串行时钟线并且将数据信号与时钟信号同步地发送到串行数据线。 目的地设备作为从机操作，以便基于时钟信号接收数据信号。 源设备制定包含指定目的地设备的唯一地址的数据信号，使得目的设备可以从源设备专门接收数据信号。 唯一地址包含指定目的地设备所属的类别的类别信息和指定指定类别中的目的地设备的子地址。

公开(公告)号：EP0548046A3

公开(公告)日：1993-08-25

申请号：EP93100419.6

申请日：1987-04-14

申请人： YAMAHA CORPORATION

发明人： Suzuki, Hideo ,  Kudo, Masaki ,  Kurakake, Yasushi

IPC分类号： G10H7/12 ,  H03M3/04

CPC分类号： H03M3/042 ,  G10H1/0041 ,  G10H1/26 ,  G10H7/12 ,  G10H2250/595 ,  G10H2250/601

摘要： A musical tone generating apparatus utilizing a data compression method is disclosed. A musical tone is sampled and is converted into waveform data (S(n)). These waveform data (S(n)) are compressed into compressed data (C(n)) by a linear predictive coding method and further by a differential quantization method. The number of bits of each of the compressed data (C(n)) is thus significantly smaller than that of the waveform data (S(n)). Thereafter, a memory (2) stores the thus compressed data corresponding to an attack portion of the tone and a selected part of a sustain portion of the tone. Hence, it is possible to remarkably reduce the memory storage. When generating a musical tone, the memory (2) reads out the compressed data (C(n)) of the attack portion and thereafter repeatedly reads out the compressed data of the selected part. The read-out compressed data are sequentially decoded into the original digital data. Thus, the whole waveform of the musical tone is reproduced.

摘要翻译： 公开了一种利用数据压缩方法的乐音产生装置。 乐音被采样并转换成波形数据（S（n））。 这些波形数据（S（n））通过线性预测编码方法并且进一步通过差分量化方法被压缩为压缩数据（C（n））。 每个压缩数据（C（n））的位数因此明显小于波形数据（S（n））的位数。 之后，存储器（2）存储如此压缩的数据，该数据对应于音调的起始部分和音调的维持部分的选定部分。 因此，可以显着减少存储器的存储空间。 当产生乐音时，存储器（2）读出攻击部分的压缩数据（C（n）），然后重复读出所选部分的压缩数据。 读出的压缩数据被顺序解码为原始数字数据。 因此，音乐音调的整个波形被再现。

公开(公告)号：EP2028643A3

公开(公告)日：2010-03-17

申请号：EP08169868.0

申请日：2002-02-15

申请人： Yamaha Corporation

发明人： Sakurada, Shinya ,  Iizuka, Akira ,  Hotta, Harumichi ,  Kawai, Shizuhiko ,  Tokuda, Kozo ,  Kudo, Masaki

IPC分类号： G10H1/00

CPC分类号： G10H1/0058 ,  G10H2240/311

摘要： A bus system interconnects a plurality of devices of various categories constituting an electronic music instrument apparatus for exchanging signals among the devices having unique addresses. The bus system has a serial clock line for transmission of a clock signal, and a serial data line for transfer of a data signal from a source device to a destination device in synchronization with the clock signal. The source device operates as a master to commence a communicating session such as to send the clock signal to the serial clock line and to send the data signal to the serial data line in synchronization with the clock signal. The destination device operates as a slave so as to receive the data signal based on the clock signal. The source device formulates the data signal containing a unique address specifying the destination device such that the destination device can receive the data signal exclusively from the source device. The unique address contains category information designating a category to which the destination device belongs and a sub-address specifying the destination device in the designated category.

公开(公告)号：EP2028642A2

公开(公告)日：2009-02-25

申请号：EP08169864.9

申请日：2002-02-15

申请人： Yamaha Corporation

发明人： Sakurada, Shinya ,  Iizuka, Akira ,  Hotta, Harumichi ,  Kawai, Shizuhiko ,  Tokuda, Kozo ,  Kudo, Masaki

IPC分类号： G10H1/00

CPC分类号： G10H1/0058 ,  G10H2240/311

摘要： A bus system interconnects a plurality of devices of various categories constituting an electronic music instrument apparatus for exchanging signals among the devices having unique addresses. The bus system has a serial clock line for transmission of a clock signal, and a serial data line for transfer of a data signal from a source device to a destination device in synchronization with the clock signal. The source device operates as a master to commence a communicating session such as to send the clock signal to the serial clock line and to send the data signal to the serial data line in synchronization with the clock signal. The destination device operates as a slave so as to receive the data signal based on the clock signal. The source device formulates the data signal containing a unique address specifying the destination device such that the destination device can receive the data signal exclusively from the source device. The unique address contains category information designating a category to which the destination device belongs and a sub-address specifying the destination device in the designated category.

摘要翻译： 总线系统将构成用于在具有唯一地址的设备之间交换信号的电子乐器装置的各种类型的设备互连。 总线系统具有用于传输时钟信号的串行时钟线和用于与时钟信号同步地将数据信号从源设备传送到目的地设备的串行数据线。 源设备作为主机操作以开始通信会话，例如将时钟信号发送到串行时钟线并且将数据信号与时钟信号同步地发送到串行数据线。 目的地设备作为从机操作，以便基于时钟信号接收数据信号。 源设备制定包含指定目的地设备的唯一地址的数据信号，使得目的设备可以从源设备专门接收数据信号。 唯一地址包含指定目的地设备所属的类别的类别信息和指定指定类别中的目的地设备的子地址。

公开(公告)号：EP1235202A2

公开(公告)日：2002-08-28

申请号：EP02003564.8

申请日：2002-02-15

申请人： YAMAHA CORPORATION

发明人： Sakurada, Shinya ,  Iizuka, Akira ,  Hotta, Harumichi ,  Kawai, Shizuhiko ,  Tokuda, Kozo ,  Kudo, Masaki

IPC分类号： G10H1/00

CPC分类号： G10H1/0058 ,  G10H2240/311

摘要： A bus system interconnects a plurality of devices of various categories constituting an electronic music instrument apparatus for exchanging signals among the devices having unique addresses. The bus system has a serial clock line for transmission of a clock signal, and a serial data line for transfer of a data signal from a source device to a destination device in synchronization with the clock signal. The source device operates as a master to commence a communicating session such as to send the clock signal to the serial clock line and to send the data signal to the serial data line in synchronization with the clock signal. The destination device operates as a slave so as to receive the data signal based on the clock signal. The source device formulates the data signal containing a unique address specifying the destination device such that the destination device can receive the data signal exclusively from the source device. The unique address contains category information designating a category to which the destination device belongs and a sub-address specifying the destination device in the designated category.

摘要翻译： 总线系统将构成用于在具有唯一地址的设备之间交换信号的电子乐器装置的各种类型的设备互连。 总线系统具有用于传输时钟信号的串行时钟线和用于与时钟信号同步地将数据信号从源设备传送到目的地设备的串行数据线。 源设备作为主机操作以开始通信会话，例如将时钟信号发送到串行时钟线并且将数据信号与时钟信号同步地发送到串行数据线。 目的地设备作为从机操作，以便基于时钟信号接收数据信号。 源设备制定包含指定目的地设备的唯一地址的数据信号，使得目的设备可以从源设备专门接收数据信号。 唯一地址包含指定目的地设备所属的类别的类别信息和指定指定类别中的目的地设备的子地址。

公开(公告)号：EP0548045A2

公开(公告)日：1993-06-23

申请号：EP93100418.8

申请日：1987-04-14

申请人： YAMAHA CORPORATION

发明人： Suzuki, Hideo ,  Kudo, Masaki ,  Kurakake, Yasushi

IPC分类号： G10H7/12 ,  H03M3/04

CPC分类号： H03M3/042 ,  G10H1/0041 ,  G10H1/26 ,  G10H7/12 ,  G10H2250/595 ,  G10H2250/601

摘要： A musical tone generating apparatus utilizing a data compression method is disclosed. A musical tone is sampled and is converted into waveform data (S(n)). These waveform data (S(n)) are compressed into compressed data (C(n)) by a linear predictive coding method and further by a differential quantization method. The number of bits of each of the compressed data (C(n)) is thus significantly smaller than that of the waveform data (S(n)). Thereafter, a memory (2) stores the thus compressed data corresponding to an attack portion of the tone and a selected part of a sustain portion of the tone. Hence, it is possible to remarkably reduce the memory storage. When generating a musical tone, the memory (2) reads out the compressed data (C(n)) of the attack portion and thereafter repeatedly reads out the compressed data of the selected part. The read-out compressed data are sequentially decoded into the original digital data. Thus, the whole waveform of the musical tone is reproduced.