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1.发明授权Voice packet loss concealment device, voice packet loss concealment method, receiving terminal, and voice communication system 有权语音包丢失隐藏设备，语音丢包隐藏方法，接收终端和语音通信系统公开(公告)号：US07650280B2
公开(公告)日：2010-01-19
申请号：US11065416
申请日：2005-02-24
CPC分类号： G10L19/005 , H04L29/06027 , H04L65/607 , H04L65/80 , H04M7/006
摘要： In a voice packet communication system, a voice packet loss concealment device compensates for the deterioration of voice quality due to voice packet loss. In the device, a detecting section detects a loss of a voice packet and outputting information; an estimating section estimates the voice characteristics of the lost segment using a pre-loss voice packet received before the lost segment or a post-loss voice packet received after the lost segment; a pitch signal generating section generates a pitch signal having the voice characteristics; and a lost packet generating section outputs the pitch signal generated by the pitch signal generating section, with the voice characteristics estimated by the estimating section, which allows abnormal noise and feeling of mute, subjective deterioration of naturalness and continuity to be improved, and the voice packet loss concealment to be further improved.
摘要翻译： 在语音分组通信系统中，语音分组丢失隐藏装置补偿语音分组丢失导致的语音质量的恶化。 在该装置中，检测部检测出语音分组的丢失并输出信息; 估计部分使用在丢失段之前接收到的丢失前话音分组或在丢失分段之后接收到的丢失后语音分组来估计丢失分段的语音特性; 音调信号产生部分产生具有语音特征的音调信号; 并且丢失分组产生部分输出由音调信号产生部分生成的音调信号与由估计部分估计的语音特征，其允许异常噪声和静音感觉，自然性和连续性的主观恶化被改善，并且语音 丢包隐藏进一步提高。
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公开(公告)号：US07734053B2
公开(公告)日：2010-06-08
申请号：US11390054
申请日：2006-03-27
CPC分类号： G10L19/0204 , G10L19/002 , G10L19/008
摘要： An encoding apparatus compresses a stereo signal using a sum signal and a difference signal of a left component signal and a right component signal of the stereo signal. The encoding apparatus includes a calculating unit that calculates complexity of the sum signal and complexity of the difference signal; a setting unit that sets, based on the complexity, an allocation rate of bits to be allocated in quantizing the sum signal and the difference signal; and a quantizing unit that quantizes the sum signal and the difference signal based on the allocation rate.
摘要翻译： 编码装置使用和信号和立体声信号的左分量信号和右分量信号的差分信号来压缩立体声信号。 编码装置包括计算和信号的复杂度和差分信号的复杂度的计算单元; 设置单元，其基于复杂度设置在量化所述和信号和所述差信号中要分配的比特的分配速率; 以及量化单元，其基于分配率量化和信号和差分信号。
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公开(公告)号：US20100174960A1
公开(公告)日：2010-07-08
申请号：US12654447
申请日：2009-12-18
CPC分类号： G10L19/032 , G10L19/005
摘要： A decoding apparatus includes a unit decoding and inversely quantizing coded data to obtain frequency domain audio signal data, a unit computing from the coded data one of the number of scale bits composed of the number of bits corresponding to the scale value of the coded data and the number of spectrum bits composed of the number of bits corresponding to the spectrum value of the coded data, a unit estimating a quantization error of the frequency domain audio signal data based on one of the number of scale bits and the number of spectrum bits of the coded data, a unit computing a correction amount based on the estimated quantization error and correct the frequency domain audio signal data obtained by the frequency domain data obtaining unit based on the computed correction amount, and a unit converting the corrected frequency domain audio signal data into the audio signal.
摘要翻译： 解码装置包括单元解码和逆量化编码数据以获得频域音频信号数据，单元从编码数据中计算由与编码数据的比例值相对应的位数组成的比例数位数， 由对应于编码数据的频谱值的比特数组成的频谱比特数，基于比例数位数和频谱比数之一估计频域音频信号数据的量化误差的单位 编码数据，单元基于估计的量化误差来计算校正量，并且基于所计算的校正量校正由频域数据获取单元获得的频域音频信号数据，以及将校正后的频域音频信号数据 进入音频信号。
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公开(公告)号：US20070127585A1
公开(公告)日：2007-06-07
申请号：US11390054
申请日：2006-03-27
IPC分类号： H04L23/02
CPC分类号： G10L19/0204 , G10L19/002 , G10L19/008
摘要： An encoding apparatus compresses a stereo signal using a sum signal and a difference signal of a left component signal and a right component signal of the stereo signal. The encoding apparatus includes a calculating unit that calculates complexity of the sum signal and complexity of the difference signal; a setting unit that sets, based on the complexity, an allocation rate of bits to be allocated in quantizing the sum signal and the difference signal; and a quantizing unit that quantizes the sum signal and the difference signal based on the allocation rate.
摘要翻译： 编码装置使用和信号和立体声信号的左分量信号和右分量信号的差分信号来压缩立体声信号。 编码装置包括计算和信号的复杂度和差分信号的复杂度的计算单元; 设置单元，其基于复杂度设置在量化所述和信号和所述差信号中要分配的比特的分配速率; 以及量化单元，其基于分配率量化和信号和差分信号。
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公开(公告)号：US08225160B2
公开(公告)日：2012-07-17
申请号：US12654447
申请日：2009-12-18
IPC分类号： G06F11/30
CPC分类号： G10L19/032 , G10L19/005
摘要： A decoding apparatus includes a unit decoding and inversely quantizing coded data to obtain frequency domain audio signal data, a unit computing from the coded data one of the number of scale bits composed of the number of bits corresponding to the scale value of the coded data and the number of spectrum bits composed of the number of bits corresponding to the spectrum value of the coded data, a unit estimating a quantization error of the frequency domain audio signal data based on one of the number of scale bits and the number of spectrum bits of the coded data, a unit computing a correction amount based on the estimated quantization error and correct the frequency domain audio signal data obtained by the frequency domain data obtaining unit based on the computed correction amount, and a unit converting the corrected frequency domain audio signal data into the audio signal.
摘要翻译： 解码装置包括单元解码和逆量化编码数据以获得频域音频信号数据，单元从编码数据中计算由与编码数据的比例值相对应的位数组成的比例数位数， 由对应于编码数据的频谱值的比特数组成的频谱比特数，基于比例数位数和频谱比数之一估计频域音频信号数据的量化误差的单位 编码数据，单元基于估计的量化误差来计算校正量，并且基于所计算的校正量校正由频域数据获取单元获得的频域音频信号数据，以及将校正后的频域音频信号数据 进入音频信号。
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6.发明申请Voice packet loss concealment device, voice packet loss concealment method, receiving terminal, and voice communication system 有权语音包丢失隐藏设备，语音丢包隐藏方法，接收终端和语音通信系统公开(公告)号：US20050166124A1
公开(公告)日：2005-07-28
申请号：US11065416
申请日：2005-02-24
CPC分类号： G10L19/005 , H04L29/06027 , H04L65/607 , H04L65/80 , H04M7/006
摘要： In a voice packet communication system, a voice packet loss concealment device compensates for the deterioration of voice quality due to voice packet loss. In the device, a detecting section detects a loss of a voice packet and outputting information; an estimating section estimates the voice characteristics of the lost segment using a pre-loss voice packet received before the lost segment or a post-loss voice packet received after the lost segment; a pitch signal generating section generates a pitch signal having the voice characteristics; and a lost packet generating section outputs the pitch signal generated by the pitch signal generating section, with the voice characteristics estimated by the estimating section, which allows abnormal noise and feeling of mute, subjective deterioration of naturalness and continuity to be improved, and the voice packet loss concealment to be further improved.
摘要翻译： 在语音分组通信系统中，语音分组丢失隐藏装置补偿语音分组丢失导致的语音质量的恶化。 在该装置中，检测部检测出语音分组的丢失并输出信息; 估计部分使用在丢失段之前接收到的丢失前话音分组或在丢失分段之后接收到的丢失后语音分组来估计丢失分段的语音特性; 音调信号产生部分产生具有语音特征的音调信号; 并且丢失分组产生部分输出由音调信号产生部分产生的音调信号与由估计部分估计的语音特征，其允许异常噪声和静音感觉，自然性和连续性的主观恶化被改善，并且语音 丢包隐藏进一步提高。
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7.发明授权Speech decoder, speech decoding method, program and storage media to improve voice clarity by emphasizing voice tract characteristics using estimated formants 有权语音解码器，语音解码方法，程序和存储介质，通过使用估计的共振峰强调语音特征来提高语音清晰度公开(公告)号：US07606702B2
公开(公告)日：2009-10-20
申请号：US11115478
申请日：2005-04-27
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, using amplification ratios calculated based on estimated formants, 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sp1和声源信号r1。 声道特征修改单元修改声道特征sp1并输出修改的声道特征sp2。 在该方法中，通过使用共振峰强调，使用基于估计的共振峰计算的放大比例，直接将声发射特征sp2产生到声带特征sp1。 信号合成单元合成修正的声道特征sp2和声源信号r1，以产生并输出输出声音。
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公开(公告)号：US07590532B2
公开(公告)日：2009-09-15
申请号：US10307869
申请日：2002-12-02
IPC分类号： G10L19/00
CPC分类号： G10L19/173
摘要： It is so arranged that a voice code can be converted even between voice encoding schemes having different subframe lengths. A voice code conversion apparatus demultiplexes a plurality of code components (Lsp1, Lag1, Gain1, Cb1), which are necessary to reconstruct a voice signal, from voice code in a first voice encoding scheme, dequantizes the codes of each of the components and converts the dequantized values of code components other than an algebraic code component to code components (Lsp2, Lag2, Gp2) of a voice code in a second voice encoding scheme. Further, the voice code conversion apparatus reproduces voice from the dequantized values, dequantizes codes that have been converted to codes in the second voice encoding scheme, generates a target signal using the dequantized values and reproduced voice, inputs the target signal to an algebraic code converter and obtains an algebraic code (Cb2) in the second voice encoding scheme.
摘要翻译： 即使在具有不同子帧长度的语音编码方案之间也可以转换语音代码。 声音码转换装置从第一语音编码方案中的语音码解复用重构语音信号所需的多个代码分量（Lsp1，Lag1，Gain1，Cb1），对每个分量的代码进行去量化，并将其转换 除了代数代码分量之外的代码分量的解量化值，以对第二语音编码方案中的语音代码的分量（Lsp2，Lag2，Gp2）进行编码。 此外，语音代码转换装置从去量化值再现语音，对已经转换为第二语音编码方案中的代码的代码进行解量化，使用去量化值和再现语音生成目标信号，将目标信号输入到代数码转换器 并获得第二语音编码方案中的代数码（Cb2）。
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公开(公告)号：US20050165608A1
公开(公告)日：2005-07-28
申请号：US11060188
申请日：2005-02-17
IPC分类号： G10L13/04
CPC分类号： G10L19/06 , G10L21/0364
摘要： A voice intensifier capable of reducing abrupt changes in the amplification factor between frames and realizing excellent sound quality with less noise feeling by dividing input voices into the sound source characteristic and the vocal tract characteristic, so as to individually intensify the sound source characteristic and the vocal tract characteristic and then synthesize them before being output. The voice intensifier comprises a signal separation unit for separating the input sound signal into the sound source characteristic and the vocal tract characteristic, a characteristic extraction unit for extracting characteristic information from the vocal tract characteristic, a corrective vocal tract characteristic calculation unit for obtaining vocal tract characteristic correction information from the vocal tract characteristic and the characteristic information, a vocal tract characteristic correction unit for correcting the vocal tract characteristic by using the vocal tract characteristic correction information, and a signal synthesizing means for synthesizing the corrective vocal tract characteristic from the vocal tract characteristic correction unit and the sound source characteristic, so that the sound synthesized by the signal synthesizing means is output.
摘要翻译： 一种语音增强器，其能够通过将输入声音分解成声源特性和声道特性来减少帧之间的放大系数的突然变化，并且通过较少的噪音感觉实现优良的音质，从而单独加强声源特性和声带 然后在输出之前进行合成。 语音增强器包括：信号分离单元，用于将输入声音信号分离成声源特征和声道特征;特征提取单元，用于从声道特征中提取特征信息;矫正声道特征计算单元，用于获得声道 来自声道特征和特征信息的特征校正信息，通过使用声道特征校正信息来校正声道特征的声道特征校正单元，以及用于从声道合成矫正声道特征的信号合成装置 特征校正单元和声源特性，从而输出由信号合成装置合成的声音。
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公开(公告)号：US20050023343A1
公开(公告)日：2005-02-03
申请号：US10802168
申请日：2004-03-17
CPC分类号： G10L19/018
摘要： A data embedding device for embedding data in a speech code obtained by encoding a speech in accordance with a speech encoding method based on a voice generation process of a human being, includes an embedding judgment unit, every speech code, judging whether or not data should be embedded in the speech code, and an embedding unit embedding data in two or more parameter codes of a plurality of parameter codes constituting the speech code for which it is judged by the embedding judgment unit that the data should be embedded.
摘要翻译： 一种数据嵌入装置，用于将数据嵌入到根据人的语音产生处理的语音编码方法对语音进行编码而获得的语音码中，包括嵌入判断单元，每个语音码，判断数据是否应该 嵌入在语音码中，以及嵌入单元，将构成嵌入判定单元所判断的语音码的多个参数码的两个以上的参数码嵌入数据，嵌入单元嵌入数据。
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