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11.发明公开
公开(公告)号：EP0356995A3
公开(公告)日：1992-10-07
申请号：EP89115926.1
申请日：1989-08-29
发明人： Kawamura, Akihisa , Matsumoto, Masaharu , Serikawa, Mitsuhiko , Tagami, Ryo , Sato, Katsuaki , Yoshida, Hiroko , Hashimoto, Hikari
IPC分类号： G11B27/32 , G11B27/10 , G11B27/34 , G11B27/00 , G11B33/10 , G11B31/00 , H04N5/76 , G11B20/00 , H04N5/91 , H04S1/00
CPC分类号： G11B20/00992 , G11B27/007 , G11B27/107 , G11B27/322 , G11B27/34 , H04N9/802 , H04S1/007
摘要： Control codes for controlling processing of an audio signal by a sound field variation circuit to produce desired sound fields are recorded on a monaural track of a video tape concurrent with recording of video and audio signals, and can thereby be subsequently played back for producing sound fields which are respectively synchronized with video images.
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公开(公告)号：EP0432973A2
公开(公告)日：1991-06-19
申请号：EP90313341.1
申请日：1990-12-07
发明人： Matsumoto, Masaharu , Serikawa, Mitsuhiko , Kawamura, Akihisa , Numazu, Hiroko , Sato, Katsuaki
摘要： A reflection sound compression apparatus extracts and compresses, most appropriately with a physical evaluation value, an impulse response of a hall, etc. which are obtained by calculation and actual experiment to reflection sounds in the number required by a sound field controller by using a learning identification method.
摘要翻译： 反射声音压缩装置通过计算和实际实验将通过使用学习的声场控制器所要求的数量的反射声音，通过物理评估值最适当地提取和压缩大厅的脉冲响应等 识别方法。
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公开(公告)号：EP0343691A3
公开(公告)日：1991-02-27
申请号：EP89109666.1
申请日：1989-05-29
发明人： Matsumoto, Masaharu , Sato, Katsuaki , Ishikawa, Seiichi , Serikawa, Mitsuhiko , Kawamura, Akihisa , Hashimoto, Hikari
摘要： An apparatus for changing a sound field, comprising at least two signal processing means (2,3), which can smoothly and continuously switch a sound field into an arbitrary sound field without a break of signals by alternately switching one of the signal processing means into the other.
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14.发明授权Digital audio signal decoding apparatus, decoding method and a recording medium storing the decoding steps 有权用于存储所述解码步骤的数字音频信号解码装置和方法，和记录介质
公开(公告)号：EP0957639B1
公开(公告)日：2006-12-20
申请号：EP99108627.3
申请日：1999-05-11
发明人： Fujita, Takeshi , Miyasaka, Shuji , Sueyoshi, Masahiro , Kawamura, Akihisa , Matsumoto, Masaharu , Katayama, Takashi , Ishito, Tsukuru , Nakamura, Tsuyoshi , Otomura, Eiji
CPC分类号： H04N7/24
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16.发明公开
公开(公告)号：EP1139336A2
公开(公告)日：2001-10-04
申请号：EP01107978.7
申请日：2001-03-29
发明人： Nishio, Kosuke , Katayama, Takashi , Matsumoto, Masaharu , Kawamura, Akihisa , Fujita, Takeshi , Sueyoshi, Masahiro , Abe, Kazutaka
IPC分类号： G10L19/02
CPC分类号： G10L19/0208
摘要： An encoder comprises an input device for sampling an input signal at predetermined time intervals to obtain sampled data on a temporal axis, a conversion device for converting the sampled data on the temporal axis to spectral data on a frequency axis, a quantization device for quantizing the spectral data on the frequency axis, and an output device for outputting a resultant value of quantization as an encoded bit stream. The quantization device comprises an expected-value-of-quantization adjustment portion for determining an expected value of quantization for a specific sub-band on the frequency axis, and a quantization portion for determining a quantization coefficient for the specific sub-band, and quantizing each of a plurality of spectral data contained in the specific sub-band using the quantization coefficient for the specific sub-band. The quantization coefficient for the specific sub-band is determined so that a resultant value of quantization obtained by quantizing one spectral data selected from the plurality of spectral data contained in the specific sub-band, using the quantization coefficient for the specific sub-band, is substantially equal to the expected value of quantization for the specific sub-band.
摘要翻译： 编码器包括用于以预定时间间隔对输入信号进行采样以在时间轴上获取采样数据的输入装置，用于将时间轴上的采样数据转换为频率轴上的频谱数据的转换装置，用于量化 频率轴上的频谱数据，以及用于输出作为编码比特流的量化结果值的输出装置。 量化装置包括用于确定频率轴上的特定子带的量化期望值的量化值预测值部分和用于确定特定子带的量化系数的量化部分，并量化 使用特定子带的量化系数包含在特定子带中的多个频谱数据中的每一个。 确定特定子带的量化系数，使得通过使用特定子带的量化系数量化从包含在特定子带中的多个频谱数据中选择的一个频谱数据而获得的量化的结果值， 基本上等于特定子带的量化的期望值。
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17.发明公开Digital audio signal decoding apparatus, decoding method and a recording medium storing the decoding steps 有权Digitalaudiosignaldekodierungsvorrichtung und -verfahren undAufzeichnungsträgerzum Speichern der Dekodierungsstufen
公开(公告)号：EP0957639A3
公开(公告)日：2000-07-26
申请号：EP99108627.3
申请日：1999-05-11
发明人： Fujita, Takeshi , Miyasaka, Shuji , Sueyoshi, Masahiro , Kawamura, Akihisa , Matsumoto, Masaharu , Katayama, Takashi , Ishito, Tsukuru , Nakamura, Tsuyoshi , Otomura, Eiji
CPC分类号： H04N7/24
摘要： A decoding apparatus according to the present invention comprises a stream input section (1) for separating an input bit stream into auxiliary information and encoded data, an auxiliary information analyzing section (2) for obtaining at least full channel configuration information by analyzing the auxiliary information supplied from the stream input section, a parameter ROM section (5) prestoring therein a decoding control table which presents decoding type numbers classified according to the full channel configuration information, a decoding control section (3) for selecting a decoding type number from the decoding control table on the basis of the full channel configuration information supplied from the auxiliary information analyzing section (2), and for performing decoding control based on the selected type number, and a decoding section (4) for generating output data in accordance with an instruction from the decoding control section (3).
摘要翻译： 根据本发明的解码装置包括用于将输入比特流分离成辅助信息和编码数据的流输入部分（1），用于通过分析辅助信息来获得至少全信道配置信息的辅助信息分析部分（2） 从流输入部分提供的参数ROM部分（5）在其中预存有根据全信道配置信息分类的解码类型编号的解码控制表，解码控制部分（3），用于从解码中选择解码类型号码 基于从辅助信息分析部（2）提供的全通道配置信息，并且用于基于所选择的型号执行解码控制的控制表和用于根据指令产生输出数据的解码部分（4） 来自解码控制部（3）。
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公开(公告)号：EP0948141A3
公开(公告)日：2000-07-19
申请号：EP99106068.2
申请日：1999-03-26
发明人： Sueyoshi, Masahiro , Matsumoto, Masaharu , Miyasaka, Shuji , Fujita, Takeshi , Katayama, Takashi , Abe, Kazutaka , Nishio, Kosuke , Kawamura, Akihisa , Ishito, Tsukuru , Nakamura, Tsuyoshi , Otomura, Eiji
CPC分类号： H04N21/4341 , H04N21/8106
摘要： A decoding device for decoding a bit stream defined by MPEG2 Audio Multichannel is provided. The bit stream including an MPEG1 compatible area and an MPEG2 multichannel extended area, the MPEG1 compatible area including MPEG1 side information. The decoding device includes: MPEG1 decoding means for decoding the MPEG1 compatible area; MC decoding means for decoding the MPEG2 multichannel extended area; and MC header detection means for executing a first processing including locating a position of a header of the MPEG2 multichannel extended area based on the MPEG1 side information and shifting a read position of the bit stream to the position of the header.
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公开(公告)号：EP0880246A3
公开(公告)日：1999-12-01
申请号：EP98108809.9
申请日：1998-05-14
发明人： Matsumoto, Masaharu , Katayama, Takashi , Sueyoshi, Masahiro , Miyasaka, Shuji , Fujita, Takeshi , Kawamura, Akihisa , Ishito, Tsukuru , Otomura, Eiji , Nakamura, Tsuyoshi
IPC分类号： H04H1/00
CPC分类号： G10L21/055 , G10L19/00
摘要： A compressed code decoding device of the present invention includes: a decoding section for receiving a plurality of groups of blocks of compressed codes and decoding each of the blocks of compressed codes; a buffer section for storing decoded signals decoded by the decoding section; a reproduction time acquisition section for acquiring a reproduction time at which to reproduce a predetermined one of the blocks; an output section for externally outputting the decoded signals stored in the buffer section; a detection section for detecting that the predetermined block of compressed codes has been decoded and output via the output section; an addition section for, at a time when the detection section detects that the predetermined block has been output, adding a time required for reproducing the predetermined block to the reproduction time acquired by the reproduction time acquisition section so as to produce a synchronization time; a synchronization section for comparing the synchronization time produced by the addition section and a current time so as to determine whether the synchronization time is ahead of or behind the current time; a code discarding section for, if the synchronization section determines that the synchronization time is ahead of the current time, discarding either compressed codes of one of the blocks next to the predetermined block or compressed codes of one of the groups next to the group including the predetermined block; and a reproduction delay section for, if the synchronization section determines that the synchronization time is behind the current time, delaying output of either decoded signals of the compressed codes of one of the blocks next to the predetermined block or decoded signals of the compressed codes of one of the groups next to the group including the predetermined block.
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20.发明公开Digital audio signal decoding apparatus, decoding method and a recording medium storing the decoding steps 有权用于存储所述解码步骤的数字音频信号解码装置和方法，和记录介质
公开(公告)号：EP0957639A2
公开(公告)日：1999-11-17
申请号：EP99108627.3
申请日：1999-05-11
发明人： Fujita, Takeshi , Miyasaka, Shuji , Sueyoshi, Masahiro , Kawamura, Akihisa , Matsumoto, Masaharu , Katayama, Takashi , Ishito, Tsukuru , Nakamura, Tsuyoshi , Otomura, Eiji
IPC分类号： H04N7/24
CPC分类号： H04N7/24
摘要： A decoding apparatus according to the present invention comprises a stream input section (1) for separating an input bit stream into auxiliary information and encoded data, an auxiliary information analyzing section (2) for obtaining at least full channel configuration information by analyzing the auxiliary information supplied from the stream input section, a parameter ROM section (5) prestoring therein a decoding control table which presents decoding type numbers classified according to the full channel configuration information, a decoding control section (3) for selecting a decoding type number from the decoding control table on the basis of the full channel configuration information supplied from the auxiliary information analyzing section (2), and for performing decoding control based on the selected type number, and a decoding section (4) for generating output data in accordance with an instruction from the decoding control section (3).
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