公开(公告)号：US07222069B2

公开(公告)日：2007-05-22

申请号：US11284332

申请日：2005-11-21

申请人： Masanao Suzuki ,  Yasuji Ota ,  Yoshiteru Tsuchina

发明人： Masanao Suzuki ,  Yasuji Ota ,  Yoshiteru Tsuchina

IPC分类号： G10L19/04 ,  G10L19/12

CPC分类号： G10L19/16 ,  G10L19/12

摘要： Disclosed is a voice code conversation apparatus to which voice code obtained by a first voice encoding method is input for converting this voice code to voice code of a second voice encoding method. The apparatus includes a code separating unit for separating, from the voice code based upon the first voice encoding method, codes of a plurality of components necessary to reconstruct a voice signal, code converters for dequantizing the codes of each of the components and then quantizing the dequantized values by the second voice encoding method to thereby generate codes, and a code multiplexer for multiplexing the codes output from respective ones of the code converters and transmitting voice code based upon the second voice encoding method.

摘要翻译： 公开了一种语音代码对话装置，其中输入通过第一语音编码方法获得的语音代码，用于将该语音代码转换为第二语音编码方法的语音代码。 该装置包括一个代码分离单元，用于根据第一语音编码方法从语音代码中分离出重构语音信号所需的多个分量的代码，用于对每个分量的代码进行去量化的代码转换器，然后量化 通过第二语音编码方法进行反量化的值，从而生成代码;以及代码多路复用器，用于对从各个代码转换器输出的代码进行多路复用，并且基于第二语音编码方法发送语音代码。

公开(公告)号：US20050187762A1

公开(公告)日：2005-08-25

申请号：US11115478

申请日：2005-04-27

申请人： Masakiyo Tanaka ,  Masanao Suzuki ,  Yasuji Ota ,  Yoshiteru Tsuchinaga

发明人： Masakiyo Tanaka ,  Masanao Suzuki ,  Yasuji Ota ,  Yoshiteru Tsuchinaga

IPC分类号： G10L19/04 ,  G10L19/12 ,  G10L19/14 ,  G10L21/02

CPC分类号： G10L19/26 ,  G10L19/12 ,  G10L21/0364 ,  G10L25/15

摘要： A code separation/decoding unit restores a vocal tract characteristic sp1 and a vocal source signal r1. A vocal tract characteristic modification unit modifies the vocal tract characteristic sp1 and outputs the modified vocal tract characteristic sp2. In this method, an emphasized vocal tract characteristic sp2 is generated to output by applying formant emphasis directly to the vocal tract characteristic sp1 for instance. A signal synthesis unit synthesizes the modified vocal tract characteristic sp2 and the vocal source signal r1 to generate and output an output voice, s.

摘要翻译： 代码分离/解码单元恢复声道特征sp 1 SUB和声源信号r 1 1 。 声道特征修改单元修改声道特征sp 1，并输出修改的声道特征sp 2。 在该方法中，通过将共振峰强调直接应用于例如声带特征sp 1，产生强调的声带特征sp 2 N 2输出。 信号合成单元合成修改的声道特征sp 2和声源信号r 1，以产生和输出输出声音，s。

公开(公告)号：US20050185678A1

公开(公告)日：2005-08-25

申请号：US11111759

申请日：2005-04-22

申请人： Yoshiteru Tsuchinaga ,  Yasuji Ota ,  Masanao Suzuki ,  Masakiyo Tanaka

发明人： Yoshiteru Tsuchinaga ,  Yasuji Ota ,  Masanao Suzuki ,  Masakiyo Tanaka

IPC分类号： H04L12/56

CPC分类号： H04L47/10 ,  H04L47/263 ,  H04L47/38

摘要： Communications from a transmission side to a reception side neither changing the format of voice code data nor requiring another transmission path or increasing the transmission quantity of control information are controlled utilizing information obtained on the reception side. A system includes a first communication equipment provided with a control information embedding unit for embedding control information that is used for a control of communications from a communication partner to the own communication equipment and that is obtained on the own communication equipment side in the communication data to be transmitted to the communication partner side and a second communication equipment provided with a communication control unit for controlling communications to the first communication equipment side using control information transmitted from the first communication equipment.

摘要翻译： 利用在接收侧获得的信息来控制从发送侧到接收侧的通信，既不改变语音代码数据的格式也不需要另一个传输路径或增加控制信息的传输量。 一种系统，包括：第一通信设备，具备控制信息嵌入单元，该控制信息嵌入单元用于将通信对方的通信控制用于本通信设备的控制信息嵌入，并将通信数据中的自身通信设备侧获得的控制信息嵌入到 被发送到通信对方侧，第二通信设备具有通信控制单元，用于使用从第一通信设备发送的控制信息来控制与第一通信设备侧的通信。

公开(公告)号：US09076440B2

公开(公告)日：2015-07-07

申请号：US12367963

申请日：2009-02-09

申请人： Miyuki Shirakawa ,  Masanao Suzuki ,  Yoshiteru Tsuchinaga

发明人： Miyuki Shirakawa ,  Masanao Suzuki ,  Yoshiteru Tsuchinaga

IPC分类号： G10L25/00 ,  G10L19/00 ,  G10L21/00 ,  G10L19/035 ,  G10L19/02

CPC分类号： G10L19/035 ,  G10L19/0212

摘要： A disclosed encoding device converts an audio signal into frequency spectra, determines allowable error powers with respect to bands divided by the frequency of the audio signal by a predetermined with, detects a tonal frequency spectrum from the frequency spectra, and detects a band containing the frequency spectrum. Using the detection result and the allowable error powers, the encoding device performs correction such that allowable error powers determined by a power determining unit with respect to bands adjacent to the band detected by a detecting unit become smaller than the powers of the frequency spectra with respect to the adjacent bands, and quantizes each of frequency spectra having greater powers than the corrected allowable error powers.

摘要翻译： 所公开的编码装置将音频信号转换为频谱，将相对于由音频信号的频率除以预定宽度的频带的允许误差功率确定，从频谱检测音调频谱，并检测包含频率的频带 光谱。 使用检测结果和允许的误差功率，编码装置执行校正，使得由功率确定单元确定的关于由与检测单元检测到的频带相邻的频带的容许误差功率变得小于相对于频谱的功率的功率 并且量化具有比校正的允许误差功率更大的功率的每个频谱。

公开(公告)号：US08831960B2

公开(公告)日：2014-09-09

申请号：US13546292

申请日：2012-07-11

申请人： Miyuki Shirakawa ,  Yohei Kishi ,  Masanao Suzuki

发明人： Miyuki Shirakawa ,  Yohei Kishi ,  Masanao Suzuki

IPC分类号： G10L19/00 ,  G10L21/00

CPC分类号： G10L19/008 ,  H04S2400/03

摘要： An audio encoding device includes a time-frequency converting unit that conducts time-frequency conversion of channel signals included in an audio signal having a plurality of channels in frame units having a certain length of time to convert the channel signals to respective frequency signals; a downmixing unit that generates a main signal representing a major component of a first channel and a second channel among the plurality of channels, and a residual signal that is a component orthogonal to the main signal; a weight determining unit that obtains a decoding value predicted and a decoding value predicted, obtains signal components affecting each other between the first channel and the second channel; a weighting unit that uses the weighting coefficient; a residual signal encoding unit that encodes the weighted residual signal the weighting coefficient; and a main signal encoding unit that encodes the main signal.

摘要翻译： 音频编码装置包括：时间 - 频率转换单元，其对具有一定时间长度的帧单位的具有多个信道的音频信号中包含的信道信号进行时频转换，以将信道信号转换成各个频率信号; 降混单元，其生成表示多个通道中的第一通道和第二通道的主要部件的主信号，以及作为与主信号正交的分量的残差信号; 获得预测解码值和预测解码值的权重确定单元获得在第一信道和第二信道之间相互影响的信号分量; 使用加权系数的加权单元; 剩余信号编码单元，对所述加权残差信号进行加权系数的编码; 以及对主信号进行编码的主信号编码单元。

公开(公告)号：US08788275B2

公开(公告)日：2014-07-22

申请号：US11902325

申请日：2007-09-20

申请人： Miyuki Shirakawa ,  Masanao Suzuki ,  Takashi Makiuchi ,  Yoshiteru Tsuchinaga

发明人： Miyuki Shirakawa ,  Masanao Suzuki ,  Takashi Makiuchi ,  Yoshiteru Tsuchinaga

IPC分类号： G06F15/00 ,  G10L11/04 ,  G10L19/00 ,  G10L21/04 ,  G10L19/14

CPC分类号： G10L19/24 ,  G10L21/0364

摘要： A decoding apparatus decodes a first encoded data that is encoded from a low-frequency component of an audio signal, and a second encoded data that is used when creating a high-frequency component of an audio signal from a low-frequency component and encoded in accordance with a certain bandwidth, into the audio signal. In the decoding apparatus, a high-frequency component detecting unit divides the high-frequency component into bands with a certain interval range correspondingly to the certain bandwidth, and detects magnitude of the high-frequency components corresponding to each of the bands. A high-frequency component compensating unit compensates the high-frequency components based on the magnitude of the high-frequency components corresponding to each of the bands detected by the high-frequency component detecting unit. A decoding unit that decodes the low-frequency component decoded from the first encoded data, and the high-frequency components compensated by the high-frequency component compensating unit, into the audio signal.

摘要翻译： 解码装置对从音频信号的低频分量编码的第一编码数据和从低频分量创建音频信号的高频分量而使用的第二编码数据进行解码， 按照一定的带宽，进入音频信号。 在解码装置中，高频成分检测部将该高频成分与特定带宽对应地设定为一定的间隔范围的频带，并检测与各频带对应的高频成分的大小。 高频分量补偿单元基于与由高频分量检测单元检测到的每个频带对应的高频分量的大小来补偿高频分量。 解码单元，将从第一编码数据解码的低频分量和由高频分量补偿单元补偿的高频分量解码成音频信号。

公开(公告)号：US08612219B2

公开(公告)日：2013-12-17

申请号：US11907341

申请日：2007-10-11

申请人： Yoshiteru Tsuchinaga ,  Masanao Suzuki ,  Miyuki Shirakawa ,  Takashi Makiuchi

发明人： Yoshiteru Tsuchinaga ,  Masanao Suzuki ,  Miyuki Shirakawa ,  Takashi Makiuchi

IPC分类号： G10L19/02 ,  G10L21/00

CPC分类号： G10L19/002 ,  G10L21/038

摘要： An SBR encoder includes a filter bank that receives an input signal, a time/frequency grid generator that controls a number of bits of various parameters, a parameter calculator that calculates various parameters, a parameter coding unit that encodes the parameters, an upper-limit number-of-bit storage unit that stores an upper limit of the number of bit of encoded data of high-frequency component finally generated in a high-pass encoding process, and a number-of-bit controller. The number-of-bit controller controls the high-pass encoding process by preferentially encoding a parameter having a large influence to sound quality and not encoding a parameter having a small influence to the sound quality relative to a plurality of parameters, so that the number of bits of the encoded data of high-frequency component finally generated in the high-pass encoding process becomes equal to or less than the upper limit to be stored in the upper-limit number-of-bit storage unit.

摘要翻译： SBR编码器包括接收输入信号的滤波器组，控制各种参数的位数的时间/频率网格发生器，计算各种参数的参数计算器，对参数进行编码的参数编码单元，上限 位数存储单元，其存储在高通编码处理中最终生成的高频分量的编码数据的比特数的上限，以及比特数控制器。 位数控制器通过优先编码对声音质量影响很大的参数并且不对相对于多个参数对声音质量影响小的参数进行编码来控制高通编码处理，使得数字 在高通编码处理中最终生成的高频分量的编码数据的比特数变得等于或小于要存储在上限位数存储单元中的上限。

公开(公告)号：US20120224703A1

公开(公告)日：2012-09-06

申请号：US13362317

申请日：2012-01-31

申请人： Yohei KISHI ,  Miyuki Shirakawa ,  Masanao Suzuki ,  Yoshiteru Tsuchinaga ,  Shunsuke Takeuchi

发明人： Yohei KISHI ,  Miyuki Shirakawa ,  Masanao Suzuki ,  Yoshiteru Tsuchinaga ,  Shunsuke Takeuchi

IPC分类号： H04R5/00

CPC分类号： H04R3/00 ,  G10L19/025

摘要： An audio coding device includes a time frequency transform unit that, with respect to each of a plurality of channels included in an audio signal, generates a time frequency signal indicating frequency components at each time by performing a time frequency transform on a signal of the channel; a transient detection unit that detects a transient with respect to each of the plurality of channels so as to obtain a transient detection time; a transient time correction unit that, when a difference in transient detection times between an early detection channel in which the transient detection time is earliest and a late detection channel that is a channel other than the early detection channel among the plurality of channels is within a range in which the transient; a grid determination unit that, with respect to each of the plurality of channels, and a coding unit that codes.

摘要翻译： 音频编码装置包括：时频变换部，对于包含在音频信号中的多个频道中的每一个，通过对信道的信号进行时间频率变换，生成表示各时刻频率分量的时间频率信号 ; 瞬态检测单元，其针对所述多个通道中的每一个检测瞬态，以获得瞬时检测时间; 瞬时时间校正单元，其中当所述多个频道中的所述瞬时检测时间最早的早期检测信道与作为所述早期检测信道之外的信道的晚期检测信道之间的瞬时检测时间的差异在 短暂的范围; 对于多个信道中的每个信道的网格确定单元和对编码的编码单元。

公开(公告)号：US20120163608A1

公开(公告)日：2012-06-28

申请号：US13311682

申请日：2011-12-06

申请人： Yohei KISHI ,  Masanao Suzuki ,  Miyuki Shirakawa ,  Yoshiteru Tsuchinaga

发明人： Yohei KISHI ,  Masanao Suzuki ,  Miyuki Shirakawa ,  Yoshiteru Tsuchinaga

IPC分类号： H04R5/00

CPC分类号： H04S3/008 ,  G10L19/008 ,  H04S1/007 ,  H04S2400/03

摘要： An encoder includes, a degree-of-importance calculating unit that calculates a degree of importance of each of a first number of signals included in input signals; a signal converting unit that converts the first number of signals included in the input signals into a second number of signals; a degree-of-importance converting unit that converts a first number of degrees of importance, a number of which is equal to the first number of signals, calculated by the degree-of-importance calculating unit into a second number of degrees of importance, a number of which is equal to the second number of signals; a number-of-bits determining unit that determines a number of bits for use in quantizing each of the second number of signals obtained by the conversion performed by the signal converting; and a quantizing unit that quantizes each of the second number.

摘要翻译： 编码器包括：重要度计算单元，其计算包括在输入信号中的第一数量信号中每一个的重要度; 信号转换单元，将包括在输入信号中的第一数目的信号转换成第二数量的信号; 重要度转换单元，其将由重要度计算单元计算的第一数量的重要度的第一数量等于由第一重要度计算单元计算的第一数量的重要度， 其数量等于第二数量的信号; 位数确定单元，确定用于量化通过所述信号转换执行的转换获得的所述第二数量信号中的每一个的比特数; 以及量化每个第二数量的量化单元。

公开(公告)号：US20120078640A1

公开(公告)日：2012-03-29

申请号：US13176932

申请日：2011-07-06

申请人： Miyuki SHIRAKAWA ,  Yohei Kishi ,  Masanao Suzuki ,  Yoshiteru Tsuchinaga

发明人： Miyuki SHIRAKAWA ,  Yohei Kishi ,  Masanao Suzuki ,  Yoshiteru Tsuchinaga

IPC分类号： G10L19/00

CPC分类号： G10L19/0212 ,  G10L19/008

摘要： An audio encoding device includes, a time-frequency transformer that transforms signals of channels, a first spatial-information determiner that generates a frequency signal of a third channel, a second spatial-information determiner that generates a frequency signal of the third channel, a similarity calculator that calculates a similarity between the frequency signal of the at least one first channel and the frequency signal of the at least one second channel, a phase-difference calculator that calculates a phase difference between the frequency signal of the at least one first channel and the signal of the at least one second channel, a controller that controls determination of the first spatial information when the similarity and the phase difference satisfy a predetermined determination condition, a channel-signal encoder that encodes the frequency signal of the third channel, and a spatial-information encoder that encodes the first spatial information or the second spatial information.

摘要翻译： 音频编码装置包括：变换信道信号的时间频率变换器，产生第三信道的频率信号的第一空间信息确定器，产生第三信道的频率信号的第二空间信息确定器， 计算所述至少一个第一信道的频率信号与所述至少一个第二信道的频率信号之间的相似度的相似度计算器，计算所述至少一个第一信道的频率信号之间的相位差的相位差计算器， 以及所述至少一个第二信道的信号，控制器，当所述相似度和所述相位差满足预定的确定条件时，控制所述第一空间信息的确定;编码所述第三信道的频率信号的信道信号编码器，以及 编码第一空间信息或第二空间信息的空间信息编码器 ation。