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1. 发明专利

JPWO2006054698A1 映像音声記録装置及び方法、並びに、映像音声再生装置及び方法有权
公开(公告)号：JPWO2006054698A1
公开(公告)日：2008-06-05
申请号：JP2006545167
申请日：2005-11-18
申请人：日本ビクター株式会社
发明人：村田　寿子 , 寿子村田 , 鈴木　琢磨 , 琢磨鈴木 , 定浩安良 , 定浩安良 , 実希羽石 , 実希羽石 , 勝巳長谷川 , 勝巳長谷川 , 正子相崎 , 正子相崎 , 喜久藤浪 , 喜久藤浪 , 正美武田 , 正美武田 , 菅原　隆幸 , 隆幸菅原
IPC分类号： H04R3/00 , H04N5/225 , H04R5/027
CPC分类号： H04S1/005 , H04R1/1091 , H04R5/027
摘要：映像音声記録再生装置(101)は内蔵ステレオマイク(21a,21b)と外部マイク接続端子(32)を備える。外部マイク接続端子(32)には撮影者(300)の耳に装着するバイノーラルマイク(3)が接続されている。バイノーラルマイク(3)で周囲音を集音する場合は記録媒体に記録する音声信号を内蔵ステレオマイク(21a,21b)からの音声信号からバイノーラルマイク(3)からのバイノーラル音声信号へと切り替える。撮影者(300)はバイノーラルマイク(3(31a.31b))を耳に装着して被写体から発せられた音を含む撮影者(300)の周囲音を集音する。カメラ部(11)は被写体を撮像する。記録媒体にバイノーラル音声信号と撮像した映像信号とバイノーラルフラグ信号とを記録する。

2. 发明专利

JP3630082B2 Audio signal encoding method and apparatus 有权
公开(公告)号：JP3630082B2
公开(公告)日：2005-03-16
申请号：JP2000204915
申请日：2000-07-06
申请人：日本ビクター株式会社
发明人：定浩安良
IPC分类号： G10L19/02 , G10L19/00 , H03M7/30
摘要： PROBLEM TO BE SOLVED: To provide an audio signal coder that can properly reduce the number of times of the calculation estimate loop, until permissible distortion and the number of bits used for the coder that are properly brought into a permissible range. SOLUTION: The audio signal coder has a time-frequency conversion section 11, an audible model section 12, a quantization coding section 13 and a bit stream processing section 14. The quantization coding section 13 is provided with a block, having a quantization distortion calculation discrimination means 134, that brings the quantization distortion to a permissible noise level calculated from the audible model section 12 or below as its control and having a band level revision means 135, and a block having a bit number calculation discriminating means 132 that conducts quantization and brings the result to a range as its control and having a full-band level revision means 133. The full-band level estimate means 131 is provided in the heading position so as to estimate an initial value of the full-band level revision means 133 in the block.

3. 发明专利

JP4169002B2 Audio format conversion device and the encoding device 有权
公开(公告)号：JP4169002B2
公开(公告)日：2008-10-22
申请号：JP2004360769
申请日：2004-12-14
申请人：日本ビクター株式会社
发明人：潤大河内 , 定浩安良
IPC分类号： G11B20/12 , G10L19/02

4. 发明专利

JP4556866B2 High-efficiency coding program and high-efficiency encoding device 有权
公开(公告)号：JP4556866B2
公开(公告)日：2010-10-06
申请号：JP2005376442
申请日：2005-12-27
申请人：日本ビクター株式会社
发明人：定浩安良
IPC分类号： G10L19/00 , G10L19/02
摘要： PROBLEM TO BE SOLVED: To provide a high efficiency coding program and a high efficiency coding apparatus capable of attaining high quality of sound or an audio signal, without changing an existing format, in coding using a low sampling frequency. SOLUTION: The high efficiency coding program comprises: a framing step for creating a process frame by dividing an input audio signal for each predetermined sample number; a filter characteristic determination step in which a spectrum envelope of a reverse characteristic of a spectrum envelope of the process frame is obtained, and a coefficient indicating a characteristic of the spectrum envelope for canceling the characteristic of the spectrum envelope of the reverse characteristic is calculated to be a filter coefficient; and a noise shaping step in which quantized noise is calculated, and the quantized noise spectrum is formed and shaped by multiplying the quantized noise by the filter coefficient. The filter characteristic determination step further includes a spectrum envelope limiting step for limiting an amplitude variation width which is determined by difference between a maximum level and a minimum level of the spectrum envelope of the reverse characteristic of the process frame within predetermined limit width. COPYRIGHT: (C)2007,JPO&INPIT

5. 发明专利

JP4009948B2 Audio signal encoding apparatus and encoding program 有权
公开(公告)号：JP4009948B2
公开(公告)日：2007-11-21
申请号：JP2003093029
申请日：2003-03-31
申请人：日本ビクター株式会社
发明人：定浩安良
IPC分类号： G10L19/00 , G10L19/02 , G10L11/00 , H03M7/30 , H03M7/40
摘要： PROBLEM TO BE SOLVED: To improve the decision precision of group processing and to make an encoding process time shorter as to an audio signal encoding device that sections an audio signal into short blocks and long blocks and groups the short blocks in front of an iterative processing system for quantization, variable-length encoding, and bit number decision making. SOLUTION: A group processing part 11 divides the short blocks into a plurality of scale factor bands (sfb) and the number of quantization steps for band power of each sfb is found. The number of band power quantization steps of corresponding sfbs of adjacent short blocks are compared with each other and when the total value of differences of all the sfbs is within a certain range, the respective sfbs are shared to group adjacent short blocks. Band power is used as a decision element to improve the decision precision, and then consistency is given between the group processing and quantization processing. COPYRIGHT: (C)2005,JPO&NCIPI

6. 发明专利

JP4775264B2 Video and audio recording apparatus and method, and, video and audio reproduction apparatus and method 有权
公开(公告)号：JP4775264B2
公开(公告)日：2011-09-21
申请号：JP2006545167
申请日：2005-11-18
申请人：日本ビクター株式会社
发明人：定浩安良 , 寿子村田 , 正美武田 , 正子相崎 , 実希羽石 , 隆幸菅原 , 喜久藤浪 , 琢磨鈴木 , 勝巳長谷川
IPC分类号： H04R5/027 , H04N5/225 , H04R3/00
CPC分类号： H04S1/005 , H04R1/1091 , H04R5/027

7. 发明专利

JP3580485B2 Audio signal encoding method 有权
公开(公告)号：JP3580485B2
公开(公告)日：2004-10-20
申请号：JP36961199
申请日：1999-12-27
申请人：日本ビクター株式会社
发明人：定浩安良
IPC分类号： G10L19/00 , G10L13/00 , G10L19/02 , H03M7/30 , H04B14/04
摘要： PROBLEM TO BE SOLVED: To quicken the convergence of the whole iteration loop. SOLUTION: Of this audio signal encoding method having a time-frequency conversion step 11, an auditory model step 12, a quantizing and encoding step 13, and a bit streaming step 14, the quantizing and encoding step has an initial value level estimating step STEP1 for an entire-band level varying step so that the number of bits lies with in a specific range, a band level varying step STEP4 which is supplied with the SMR from the auditory model step and the output of the initial level estimating step and vary the band level of a frequency spectrum according to MNR found from SNR calculated by quantization and reverse quantization, and an entire-band-level varying step STEP14 which repeatedly varies the level of the frequency spectrum other than an initial value over the entire band until the number of used bits lies within a specific bit number range.

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