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1. 发明公开

EP0466190A2 Quantizing error reducer for audio signal 失效
标题翻译： QuantisierungsfehlervermindererfürAudiosignal。
公开(公告)号：EP0466190A2
公开(公告)日：1992-01-15
申请号：EP91111688.7
申请日：1991-07-12
申请人： SONY CORPORATION
发明人： Akagiri, Kenzo, c/o Sony Corporation , Akune, Makoto, c/o Sony Corporation
IPC分类号： G11B20/10 , H03M7/30 , H03M1/00 , H04B14/04
CPC分类号： H04B14/046 , G11B20/10527 , H04B1/665
摘要： The quantizing error or noise reducer for an audio signal feeds a quantizing error back to the input side of a quantizer (11) through a noise filter (13), wherein the filter coefficients are set on the basis of information relating to the equi-loudness curve, thereby making it possible to reduce the noise in the hearing sense.
摘要翻译：用于音频信号的量化误差或降噪器通过噪声滤波器（13）将量化误差馈送到量化器（11）的输入侧，其中滤波器系数是基于与等度响度相关的信息曲线，从而可以减少听觉上的噪音。

2. 发明授权

EP0596663B1 A high efficiency encoding device and a noise spectrum modifying device and method 失效
标题翻译：高性能编码噪声频谱修正装置和手段和方法
公开(公告)号：EP0596663B1
公开(公告)日：1999-06-23
申请号：EP93308636.5
申请日：1993-10-29
申请人： SONY CORPORATION
发明人： Akagiri, Kenzo, c/o Sony Corporation , Akune, Makoto, c/o Sony Corporation
IPC分类号： H03M3/02 , H03M7/30 , H04B1/66
CPC分类号： H03G7/007 , H04B1/665

3. 发明授权

EP0601566B1 Digital signal processing apparatus and method 失效
标题翻译：装置和方法，用于数字信号处理
公开(公告)号：EP0601566B1
公开(公告)日：1998-09-23
申请号：EP93119805.5
申请日：1993-12-08
申请人： SONY CORPORATION
发明人： Akagiri, Kenzo, c/o Sony Corporation
IPC分类号： G11B20/00 , G11B20/10
CPC分类号： G11B20/00007 , G11B20/10527

4. 发明公开

EP0466190A3 Quantizing error reducer for audio signal 失效
标题翻译：音量信号量化误差减少器
公开(公告)号：EP0466190A3
公开(公告)日：1993-04-28
申请号：EP91111688.7
申请日：1991-07-12
申请人： SONY CORPORATION
发明人： Akagiri, Kenzo, c/o Sony Corporation , Akune, Makoto, c/o Sony Corporation
IPC分类号： G11B20/10 , H03M7/30 , H03M1/00 , H04B14/04
CPC分类号： H04B14/046 , G11B20/10527 , H04B1/665
摘要： The quantizing error or noise reducer for an audio signal feeds a quantizing error back to the input side of a quantizer (11) through a noise filter (13), wherein the filter coefficients are set on the basis of information relating to the equi-loudness curve, thereby making it possible to reduce the noise in the hearing sense.

5. 发明授权

EP0702368B1 Method of recording and reproducing digital audio signal and apparatus thereof 失效
标题翻译：一种用于记录和再现数字音频信号，及装置的方法
公开(公告)号：EP0702368B1
公开(公告)日：2001-12-12
申请号：EP95111440.4
申请日：1995-07-20
申请人： SONY CORPORATION
发明人： Imai, Kenichi, c/o Sony Corporation , Suzuki, Tadao, c/o Sony Corporation , Akagiri, Kenzo, c/o Sony Corporation , Akune, Makoto, c/o Sony Corporation
IPC分类号： G11B20/10 , G11B7/00
CPC分类号： G11B27/3063 , G11B20/00007 , G11B20/10527 , G11B2220/2545 , H04N19/10 , H04N19/115 , H04N19/146 , H04N19/149 , H04N19/15 , H04N19/37 , H04N19/63

6. 发明公开

EP0702368A3 Method of recording and reproducing digital audio signal and apparatus thereof 失效
标题翻译：一种用于记录和再现数字音频信号，及装置的方法
公开(公告)号：EP0702368A3
公开(公告)日：1999-04-07
申请号：EP95111440.4
申请日：1995-07-20
申请人： SONY CORPORATION
发明人： Imai, Kenichi, c/o Sony Corporation , Suzuki, Tadao, c/o Sony Corporation , Akagiri, Kenzo, c/o Sony Corporation , Akune, Makoto, c/o Sony Corporation
IPC分类号： G11B20/10
CPC分类号： G11B27/3063 , G11B20/00007 , G11B20/10527 , G11B2220/2545 , H04N19/10 , H04N19/115 , H04N19/146 , H04N19/149 , H04N19/15 , H04N19/37 , H04N19/63
摘要： An audio signal recording and reproduction apparatus enabling a low frequency band signal component to be reproduced by existing reproduction apparatuses and a high frequency band component to be processed as well. A digital audio signal is divided (1) into a low frequency band signal component and high frequency band signal component by a frequency band division filter (1) . The low band signal component is subjected to straight PCM processing to maintain compatibility with existing reproduction methods. The high frequency band signal component is subjected to high frequency coding through a requantization circuit (5) and entropy coding circuit (6). A comparison circuit compares (8) the straight PCM signals and the high efficiency coded signals to determine if they will fit into a predetermined bit length and, when not fitting, causes the requantization circuit (5) to perform requantization to shorten the bit length. The bit redistribution circuit (9) performs redistribution between the straight PCM bit data and the high efficiency coded bit data. The wave data is recorded on a CD. On the CD may also be recorded the sub-code data of an entropy coding circuit and the number of requantization bits of a requantization circuit (5).

7. 发明授权

EP0466190B1 Quantizing error reducer for audio signal 失效
标题翻译：量化的音频信号
公开(公告)号：EP0466190B1
公开(公告)日：1997-10-01
申请号：EP91111688.7
申请日：1991-07-12
申请人： SONY CORPORATION
发明人： Akagiri, Kenzo, c/o Sony Corporation , Akune, Makoto, c/o Sony Corporation
IPC分类号： G11B20/10 , H03M7/30 , H03M1/00 , H04B14/04
CPC分类号： H04B14/046 , G11B20/10527 , H04B1/665

8. 发明公开

EP0721258A2 Digital signal processing method and apparatus, digital signal decoding method and apparatus, digital signal transmission method and recording medium 失效
标题翻译：数字信号处理方法和装置，数字信号解码方法及装置，数字信号传输方法及记录媒体
公开(公告)号：EP0721258A2
公开(公告)日：1996-07-10
申请号：EP96100038.7
申请日：1996-01-03
申请人： SONY CORPORATION
发明人： Imai, Kenichi, c/o Sony Corporation , Hanajima, Mitsuru, c/o Sony Corporation , Akagiri, Kenzo, c/o Sony Corporation
IPC分类号： H04B1/66 , G11B20/10
CPC分类号： H04B1/667 , G11B20/00007
摘要： A digital signal processing method and apparatus for processing a signal obtained on splitting the entire frequency band of an input digital signal into a plurality of sub-bands are disclosed. The entire frequency band of the input digital signal is split (5) into a plurality of sub-bands, and signals of each sub-band are allocated (24) to a plurality of sub-words divided from a word of the input digital signal. In allocating the signals, the information for reducing the noise in at least one of the sub-bands is allocated to the sub-word different from the sub-word to which is allocated the signal of the sub-band whose noise is to be reduced.
摘要翻译：用于处理所获得的上整个频带分割到输入数字信号转换成子带的多个信号的数字信号处理方法和装置游离缺失光盘。输入数字信号的整个频带分割（5）成子带的多个，并且每个子频带的信号被分配（24），以从所述输入数字信号的一个字划分的子字的多个，在分配该信号，用于减少在所述子带中的至少一个噪音的信息被分配给子码字从子字不同，以所有被分配的子带是谁的噪声的信号将被降低，

9. 发明公开

EP0702368A2 Method of recording and reproducing digital audio signal and apparatus thereof 失效
标题翻译：一种用于记录和再现数字音频信号，及装置的方法
公开(公告)号：EP0702368A2
公开(公告)日：1996-03-20
申请号：EP95111440.4
申请日：1995-07-20
申请人： SONY CORPORATION
发明人： Imai, Kenichi, c/o Sony Corporation , Suzuki, Tadao, c/o Sony Corporation , Akagiri, Kenzo, c/o Sony Corporation , Akune, Makoto, c/o Sony Corporation
IPC分类号： G11B20/10
CPC分类号： G11B27/3063 , G11B20/00007 , G11B20/10527 , G11B2220/2545 , H04N19/10 , H04N19/115 , H04N19/146 , H04N19/149 , H04N19/15 , H04N19/37 , H04N19/63
摘要： An audio signal recording and reproduction apparatus enabling a low frequency band signal component to be reproduced by existing reproduction apparatuses and a high frequency band component to be processed as well. A digital audio signal is divided (1) into a low frequency band signal component and high frequency band signal component by a frequency band division filter (1) . The low band signal component is subjected to straight PCM processing to maintain compatibility with existing reproduction methods. The high frequency band signal component is subjected to high frequency coding through a requantization circuit (5) and entropy coding circuit (6). A comparison circuit compares (8) the straight PCM signals and the high efficiency coded signals to determine if they will fit into a predetermined bit length and, when not fitting, causes the requantization circuit (5) to perform requantization to shorten the bit length. The bit redistribution circuit (9) performs redistribution between the straight PCM bit data and the high efficiency coded bit data. The wave data is recorded on a CD. On the CD may also be recorded the sub-code data of an entropy coding circuit and the number of requantization bits of a requantization circuit (5).
摘要翻译：使低频带的信号分量的音频信号记录和再现装置，以通过现有的再现装置和一个高频分量带被以及处理被再现。的数字音频信号由频带分割滤波器分割（1）成低频带信号分量和高频带信号成分（1）。低频带的信号分量是经过直接的PCM处理，以保持与现有的再现方法的兼容性。高频带信号分量通过再量化电路（5）和熵进行高频编码编码电路（6）。比较电路比较（8）的直接PCM信号和高效率编码的信号，以确定矿如果theywill放入一个预定位长，并且当NOT嵌合，使所述重新量化电路（5）来执行再量化以缩短位长度。比特再分配电路（9）进行直接PCM位数据和高效率的编码的比特数据之间的重新分配。波数据被记录在CD上。所以在CD上可以记录熵编码电路的子码数据和一个再量化电路（5）的重新量化比特数。

10. 发明公开

EP0596663A2 A high efficiency encoding device and a noise spectrum modifying device and method 失效
标题翻译： Hochleistungskodierungseinrichtung und Einrichtung und Verfahren zur Rauschspektrummodifizierung。
公开(公告)号：EP0596663A2
公开(公告)日：1994-05-11
申请号：EP93308636.5
申请日：1993-10-29
申请人： SONY CORPORATION
发明人： Akagiri, Kenzo, c/o Sony Corporation , Akune, Makoto, c/o Sony Corporation
IPC分类号： H03M3/02 , H03M7/30 , H04B1/66
CPC分类号： H03G7/007 , H04B1/665
摘要： An apparatus and method for processing the input digital signal is disclosed. An input digital audio signal at an input terminal 11 is supplied via a one-block delay unit 17 to a difference unit 20, an output of which is processed by an annexed noise-shaping circuit 21 and restored by a near-instantaneous compressor 26, a near-instantaneous expander 27 and an accumulator 28 so as to be fed back to the difference unit 20 to find a difference between a signal of a directly preceding sample and a signal of the current sample. The annexed noise shaping circuit 21 modifies the spectrum of the quantization noise by taking aural characteristics, such as equal-loudness characteristics or masking characteristics, into account for diminishing the level of the quantization noise as perceived by the ear. The noise level as perceived may be reduced in a manner desirable for the sound quality without changing the existing format.
摘要翻译：公开了一种用于处理输入数字信号的装置和方法。输入端子11的输入数字音频信号通过一块延迟单元17提供给差分单元20，差分单元20的输出由附加的噪声整形电路21处理并由近瞬时压缩器26恢复，近瞬时扩展器27和累加器28，以便反馈到差分单元20，以找到直接在前的样本的信号与当前样本的信号之间的差。所附带的噪声整形电路21通过采用诸如等响度特性或掩蔽特性之类的听觉特性来改变量化噪声的频谱，以减少由耳朵感知的量化噪声的电平。可以以不改变现有格式的声音质量的方式来减少感知到的噪声水平。

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