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1. 发明授权

EP3144926B1 WAVEFORM DATA STRUCTURE FOR MUSICAL INSTRUMENT WITH SCALABLE STORAGE-FRAME LENGTH DEPENDING ON TONES . 有权
公开(公告)号：EP3144926B1
公开(公告)日：2018-11-14
申请号：EP16189007.4
申请日：2016-09-15
申请人： CASIO COMPUTER CO., LTD.
发明人： SAKATA, Goro
IPC分类号： G06F17/30 , G10H7/02 , G11B20/10 , G11B20/12 , G10H1/00 , G10L19/16 , G10H7/04 , G10H7/00
CPC分类号： G10H7/008 , G06F17/30778 , G10H1/0041 , G10H7/02 , G10H7/04 , G10H2240/071 , G10H2240/131 , G10H2240/161 , G10H2250/595 , G10H2250/601 , G10L19/167 , G11B20/1251
摘要： 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 waveform samples extracted based on a common effective-bit length. The number of the extracted waveform samples in each frame is determined based on a common effective-bit length and on the size of the frame. In case a waveform varies rapidly ( attack ), the numbers of code bits of a lot of waveform samples having various bit lengths increase: A small frame size is more efficient to convert data in response to variation in the waveform; but as the number of frames increases ( sustain ), the amount of redundant header information increases. In case a waveform slowly varies, the bit lengths of the waveform samples can be decreased and a large frame size reduces the number of header accesses. The auxiliary information area further includes an area for storing a sound volume correction parameter for correcting the sound volume of the extracted waveform samples stored in the data area when the compression ratio is changed, for instance to store lower quality, lower volume samples during the sustain portion, higher quality same volume samples during the attack portion, in order to further save memory area.

2. 发明公开

EP2840572A2 Audio signal processing device 审中-公开
标题翻译：音频信号处理设备
公开(公告)号：EP2840572A2
公开(公告)日：2015-02-25
申请号：EP14181432.7
申请日：2014-08-19
申请人： YAMAHA CORPORATION
发明人： Aoki, Ryotaro , Tokuhisa, Hideyuki
IPC分类号： G10L21/038 , G10L19/008
CPC分类号： H04S3/002 , G10H2250/601 , G10H2250/605 , G10L19/008 , G10L21/038 , H03G7/002 , H04R1/403 , H04R3/12 , H04S2400/07 , H04S2400/15
摘要： An audio signal processing device includes: an input section to which an audio signal is input; a bias processing section configured to add a bias signal to the audio signal; a calculation section configured to perform a power calculation on the audio signal to which the bias signal has been added by the bias processing section; and an adding unit configured to add the audio signal on which the power calculation is performed by the calculation section to the audio signal having been input to the input section.
摘要翻译：一种音频信号处理装置包括：输入音频信号的输入部分; 偏置处理部分，被配置为将偏置信号添加到音频信号; 计算部分，被配置为对由偏置处理部分添加了偏置信号的音频信号执行功率计算; 以及加法单元，被配置为将由所述计算单元执行了所述功率计算的音频信号添加到已经输入到所述输入单元的音频信号。

3. 发明授权

EP1407446B1 VERFAHREN UND VORRICHTUNG ZUM CHARAKTERISIEREN EINES SIGNALS UND ZUM ERZEUGEN EINES INDEXIERTEN SIGNALS 有权
标题翻译： VERFAHREN UND VORRICHTUNG ZUM CHARAKTERISIEREN EINES信号UND ZUM ERZEUGEN EINES INDEXIERTEN信号
公开(公告)号：EP1407446B1
公开(公告)日：2004-11-17
申请号：EP02758344.2
申请日：2002-07-15
申请人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V.
发明人： ALLAMANCHE, Eric , HERRE, Jürgen , HELLMUTH, Oliver , KASTNER, Thorsten
IPC分类号： G10H1/00
CPC分类号： G10H1/0008 , G10H2240/061 , G10H2240/135 , G10H2250/235 , G10H2250/601 , G10L15/04 , G10L19/0204
摘要： The invention relates to a method for characterising a signal representing an audio content. A measure is determined (12) for a tonality of the signal, whereupon a statement is made (16) about the audio content of the signal on the basis of the measure determined for the tonality of the signal. The measure for the tonality is derived from a quotient which has an average sum value in the numerator, of the spectral constituents of the signal which are exponentiated with a first power (x), and has an average sum value in the denominator, of spectral constituents which are exponientiated with a second power (y), the first and second powers differing from each other. The measure for the tonality of the signal for the content analysis is robust in relation to a signal distortion, e.g. by means of MP3-coding, and has a high correlation with the content of the signal analysed.
摘要翻译：本发明涉及一种用于表征表示音频内容的信号的方法。针对信号的音调确定（12）度量，随后基于针对信号的音调确定的度量来做出关于信号的音频内容的陈述（16）。音调的度量来自一个商，该商的分子中的平均总和值，以第一幂（x）取幂的信号的频谱成分，并且具有频谱的分母的平均总和值以第二权力（y）指数化的成分，第一和第二权力彼此不同。用于内容分析的信号的音调的度量相对于信号失真是鲁棒的，例如，通过MP3编码，并且与所分析的信号的内容具有高度相关性。

4. 发明公开

EP2840572A3 Audio signal processing device 审中-公开
标题翻译：用于音频信号处理装置
公开(公告)号：EP2840572A3
公开(公告)日：2015-03-18
申请号：EP14181432.7
申请日：2014-08-19
申请人： YAMAHA CORPORATION
发明人： Aoki, Ryotaro , Tokuhisa, Hideyuki
IPC分类号： G10L21/038 , G10L19/008
CPC分类号： H04S3/002 , G10H2250/601 , G10H2250/605 , G10L19/008 , G10L21/038 , H03G7/002 , H04R1/403 , H04R3/12 , H04S2400/07 , H04S2400/15
摘要： An audio signal processing device includes: an input section to which an audio signal is input; a bias processing section configured to add a bias signal to the audio signal; a calculation section configured to perform a power calculation on the audio signal to which the bias signal has been added by the bias processing section; and an adding unit configured to add the audio signal on which the power calculation is performed by the calculation section to the audio signal having been input to the input section.

5. 发明授权

EP0548045B1 Musical tone generating apparatus 失效
标题翻译：的乐音产生装置
公开(公告)号：EP0548045B1
公开(公告)日：1997-07-30
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

6. 发明授权

EP0548046B1 Musical tone generating apparatus 失效
标题翻译：的乐音产生装置
公开(公告)号：EP0548046B1
公开(公告)日：1997-07-09
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

7. 发明授权

EP0436397B1 Sound synthesizer 失效
标题翻译：声音合成器
公开(公告)号：EP0436397B1
公开(公告)日：1996-10-30
申请号：EP90314403.8
申请日：1990-12-28
申请人： RAYTHEON COMPANY
发明人： Rosenstrach, Paul A. , Deaett, Michael A.
IPC分类号： G10K15/02
CPC分类号： H03M7/3082 , G10H7/00 , G10H2250/015 , G10H2250/211 , G10H2250/601 , G10K15/02

8. 发明公开

EP0548045A3 Musical tone generating apparatus 失效
标题翻译：音乐发生器
公开(公告)号：EP0548045A3
公开(公告)日：1993-08-25
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.

9. 发明公开

EP3144926A3 WAVEFORM DATA STRUCTURE FOR ELECTRONIC MUSICAL INSTRUMENT WITH SCALABLE FRAME LENGTH FOR CODING AND STORING BOTH TRANSIENT APERIODIC AND PERIODIC TONES 有权
标题翻译：对于SCALIERBAREM帧长电子乐器波形数据结构来存储和周期性或非周期性的瞬态信号CODE
公开(公告)号：EP3144926A3
公开(公告)日：2017-06-21
申请号：EP16189007
申请日：2016-09-15
申请人： CASIO COMPUTER CO LTD
发明人： SAKATA GORO
IPC分类号： G10H7/02 , G06F17/30 , G10H1/00 , G10H7/00 , G10H7/04 , G10L19/16 , G11B20/10 , G11B20/12
CPC分类号： G10H7/008 , G06F17/30778 , G10H1/0041 , G10H7/02 , G10H7/04 , G10H2240/131 , G10H2240/161 , G10H2250/595 , G10H2250/601 , G10L19/167 , G11B20/1251
摘要： 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 waveform samples extracted based on a common effective-bit length. The number of the extracted waveform samples in each frame is determined based on a common effective-bit length and on the size of the frame. In case a waveform varies rapidly ( attack ), the numbers of code bits of a lot of waveform samples having various bit lengths increase: A small frame size is more efficient to convert data in response to variation in the waveform; but as the number of frames increases ( sustain ), the amount of redundant header information increases. In case a waveform slowly varies, the bit lengths of the waveform samples can be decreased and a large frame size reduces the number of header accesses. The auxiliary information area further includes an area for storing a sound volume correction parameter for correcting the sound volume of the extracted waveform samples stored in the data area when the compression ratio is changed, for instance to store lower quality, lower volume samples during the sustain portion, higher quality same volume samples during the attack portion, in order to further save memory area.
摘要翻译：一种波形数据结构包括类型的具有不同数据大小的帧的多元性。每个类型的帧，所述多个包括在辅助信息区和数据区。该辅助信息包括区域面积为波形采样的一个部分，存储共同有效位长度的数据，并且在关于用于识别的类型的帧的多个一个标识符的存储区域。数据区是用于存储基于一个共同的有效比特长度提取波形样本的区域。所提取的波形样本的每个帧中的数被开采基于一个共同的有效比特长度和在帧的大小确定的。的情况下的波形急剧变化（攻击），很多具有各种比特长度的增加的波形样本的码位的数字：一个小的帧大小为更有效地响应于在波形变化数据转换; 但作为（维持）帧的数量增加时，冗余首标信息的量增加。的情况下的波形缓慢变化，波形样本的比特长度也可降低，并且大的帧大小减少存取报头的数量。辅助信息区进一步包括在区域用于校正存储在数据区域提取的波形样品当压缩比改变的音量，例如用于存储低质量存储音量校正参数，在维持较低的体积样品在部分中，高音部分期间更高质量的相同体积的样品，为了つweiterer保存的存储器区域。

10. 发明公开

EP3144926A2 WAVEFORM DATA STRUCTURE FOR ELECTRONIC MUSICAL INSTRUMENT WITH SCALABLE FRAME LENGTH FOR CODING AND STORING BOTH TRANSIENT APERIODIC AND PERIODIC TONES 有权
标题翻译：对于SCALIERBAREM帧长电子乐器波形数据结构来存储和周期性或非周期性的瞬态信号CODE
公开(公告)号：EP3144926A2
公开(公告)日：2017-03-22
申请号：EP16189007.4
申请日：2016-09-15
申请人： CASIO COMPUTER CO., LTD.
发明人： SAKATA, Goro
IPC分类号： G10H7/02 , G11B20/10 , G11B20/12 , G10H1/00
CPC分类号： G10H7/008 , G06F17/30778 , G10H1/0041 , G10H7/02 , G10H7/04 , G10H2240/071 , G10H2240/131 , G10H2240/161 , G10H2250/595 , G10H2250/601 , G10L19/167 , G11B20/1251
摘要： 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 waveform samples extracted based on a common effective-bit length. The number of the extracted waveform samples in each frame is determined based on a common effective-bit length and on the size of the frame.
In case a waveform varies rapidly ( attack ), the numbers of code bits of a lot of waveform samples having various bit lengths increase: A small frame size is more efficient to convert data in response to variation in the waveform; but as the number of frames increases ( sustain ), the amount of redundant header information increases.
In case a waveform slowly varies, the bit lengths of the waveform samples can be decreased and a large frame size reduces the number of header accesses.
The auxiliary information area further includes an area for storing a sound volume correction parameter for correcting the sound volume of the extracted waveform samples stored in the data area when the compression ratio is changed, for instance to store lower quality, lower volume samples during the sustain portion, higher quality same volume samples during the attack portion, in order to further save memory area.

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