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公开(公告)号：US07305338B2
公开(公告)日：2007-12-04
申请号：US10553905
申请日：2004-05-14
申请人： Atsushi Tashiro , Hiromi Aoyagi , Masashi Takada
发明人： Atsushi Tashiro , Hiromi Aoyagi , Masashi Takada
CPC分类号： G10L19/005
摘要： Circuitry and a method compensate the erasure of speech signal data or similar periodic signal data, by substitution using past periodic signal data input. After a predetermined number of latest periodic signal data have been saved, whether or not an erasure occurs is determined with every periodic signal data sequence, which is a unit of processing. When an erasure occurs, one of periodic signal data sequences saved, which lies in a determined segment to be used, is used to generate synthetic data for substitution. The position of the segment to be used is determined such that when the erasure continues over units of processing, the position sequentially varies gradually for each processing units.
摘要翻译： 电路和方法通过使用过去的周期信号数据输入进行替换来补偿语音信号数据或类似周期信号数据的擦除。 在保存了预定数量的最新周期信号数据之后，是否以每个作为处理单位的周期信号数据序列确定是否发生擦除。 当发生擦除时，使用存储在待确定的段中的周期性信号数据序列之一来产生用于替换的合成数据。 确定要使用的段的位置，使得当擦除继续处理单元时，对于每个处理单元，位置顺序地逐渐变化。
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公开(公告)号：US20060224388A1
公开(公告)日：2006-10-05
申请号：US10553905
申请日：2004-05-14
申请人： Atsushi Tashiro , Hiromi Aoyagi , Masashi Takada
发明人： Atsushi Tashiro , Hiromi Aoyagi , Masashi Takada
IPC分类号： G10L13/00
CPC分类号： G10L19/005
摘要： Circuitry and a method compensate the erasure of speech signal data or similar periodic signal data, by substitution using past periodic signal data input. After a predetermined number of latest periodic signal data have been saved, whether or not an erasure occurs is determined with every periodic signal data sequence, which is a unit of processing. When an erasure occurs, one of periodic signal data sequences saved, which lies in a determined segment to be used, is used to generate synthetic data for substitution. The position of the segment to be used is determined such that when the erasure continues over units of processing, the position sequentially varies gradually for each processing units.
摘要翻译： 电路和方法通过使用过去的周期信号数据输入进行替换来补偿语音信号数据或类似周期信号数据的擦除。 在保存了预定数量的最新周期信号数据之后，是否以每个作为处理单位的周期信号数据序列确定是否发生擦除。 当发生擦除时，使用存储在待确定的段中的周期性信号数据序列之一来产生用于替换的合成数据。 确定要使用的段的位置，使得当擦除继续处理单元时，对于每个处理单元，位置顺序地逐渐变化。
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公开(公告)号：US08090093B2
公开(公告)日：2012-01-03
申请号：US11988005
申请日：2006-12-20
申请人： Hiromi Aoyagi , Masashi Takada
发明人： Hiromi Aoyagi , Masashi Takada
摘要： An echo canceller which can respond to a sudden change in echo characteristics in real time and does not require an alteration outside the echo canceller, includes a smoothed sending-speech signal calculation means for calculating a smoothed sending-speech signal from the sending-speech signal, the smoothed sending-speech signal being obtained by smoothing the sending-speech signal; a smoothed receiving-speech signal calculation means for calculating a smoothed receiving-speech signal from the receiving-speech signal, the smoothed receiving-speech signal being obtained by smoothing the receiving-speech signal; a delay time information generation means for obtaining delay time information reflecting delay characteristics of an echo path in accordance with a correlation between the smoothed sending-speech signal and the smoothed receiving-speech signal; and an update information generation means for obtaining update information indicating execution or suspension of updating of the tap coefficients of the adaptive filter, in accordance with the sending-speech signal, the receiving-speech signal, and the delay time information.
摘要翻译： 可以实时响应回波特性的突然变化并且不需要在回波消除器之外的改变的回波消除器包括平滑的发送语音信号计算装置，用于从发送语音信号计算平滑的发送语音信号 通过平滑发送语音信号获得平滑的发送语音信号; 平滑化的接收语音信号计算装置，用于从接收语音信号计算平滑的接收语音信号，平滑的接收语音信号是通过平滑接收语音信号获得的; 延迟时间信息产生装置，用于根据平滑的发送语音信号和平滑的接收语音信号之间的相关性获得反映回波路径的延迟特性的延迟时间信息; 以及更新信息产生装置，用于根据发送语音信号，接收语音信号和延迟时间信息获得指示执行或停止更新自适应滤波器的抽头系数的更新信息。
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公开(公告)号：US07792255B2
公开(公告)日：2010-09-07
申请号：US11165436
申请日：2005-06-24
申请人： Masashi Takada , Hiromi Aoyagi , Kazuyoshi Akie
发明人： Masashi Takada , Hiromi Aoyagi , Kazuyoshi Akie
IPC分类号： H04M11/00
CPC分类号： H04M7/0069 , H04M1/2535 , H04M1/60 , H04M3/40 , H04M7/006
摘要： Voice communications apparatus intervenes between a telephone set and a broad-band transmission path that has a communication band broader than a voice band limited by the transmitter and receiver characteristics of the telephone set. The voice communications apparatus includes a transmitter frequency characteristic corrector circuit for correcting the frequency characteristic of a signal input from the telephone set, and a receiver frequency characteristic corrector circuit for correcting the frequency characteristic of a signal to be input to the telephone set.
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公开(公告)号：US20060013370A1
公开(公告)日：2006-01-19
申请号：US11165436
申请日：2005-06-24
申请人： Masashi Takada , Hiromi Aoyagi , Kazuyoshi Akie
发明人： Masashi Takada , Hiromi Aoyagi , Kazuyoshi Akie
IPC分类号： H04M11/00
CPC分类号： H04M7/0069 , H04M1/2535 , H04M1/60 , H04M3/40 , H04M7/006
摘要： Voice communications apparatus intervenes between a telephone set and a broad-band transmission path that has a communication band broader than a voice band limited by the transmitter and receiver characteristics of the telephone set. The voice communications apparatus includes a transmitter frequency characteristic corrector circuit for correcting the frequency characteristic of a signal input from the telephone set, and a receiver frequency characteristic corrector circuit for correcting the frequency characteristic of a signal to be input to the telephone set.
摘要翻译： 语音通信装置介于电话机和具有比由电话机的发送机和接收机特性限制的语音频带宽的通信频带的宽带传输路径之间。 语音通信装置包括用于校正从电话机输入的信号的频率特性的发射机频率特性校正器电路和用于校正要输入到电话机的信号的频率特性的接收机频率特性校正器电路。
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公开(公告)号：US20100272248A1
公开(公告)日：2010-10-28
申请号：US12805006
申请日：2010-07-07
申请人： Masashi Takada , Hiromi Aoyagi , Kazuyoshi Akie
发明人： Masashi Takada , Hiromi Aoyagi , Kazuyoshi Akie
IPC分类号： H04M11/00
CPC分类号： H04M7/0069 , H04M1/2535 , H04M1/60 , H04M3/40 , H04M7/006
摘要： Voice communications apparatus intervenes between a telephone set and a broad-band transmission path that has a communication band broader than a voice band limited by the transmitter and receiver characteristics of the telephone set. The voice communications apparatus includes a transmitter frequency characteristic corrector circuit for correcting the frequency characteristic of a signal input from the telephone set, and a receiver frequency characteristic corrector circuit for correcting the frequency characteristic of a signal to be input to the telephone set.
摘要翻译： 语音通信装置介于电话机和具有比由电话机的发送机和接收机特性限制的语音频带宽的通信频带的宽带传输路径之间。 语音通信装置包括用于校正从电话机输入的信号的频率特性的发射机频率特性校正器电路和用于校正要输入到电话机的信号的频率特性的接收机频率特性校正器电路。
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公开(公告)号：US20090129584A1
公开(公告)日：2009-05-21
申请号：US11988005
申请日：2006-12-20
申请人： Hiromi Aoyagi , Masashi Takada
发明人： Hiromi Aoyagi , Masashi Takada
IPC分类号： H04M9/08
摘要： An echo canceller which can respond to a sudden change in echo characteristics in real time and does not require an alteration outside the echo canceller, includes a smoothed sending-speech signal calculation means for calculating a smoothed sending-speech signal from the sending-speech signal, the smoothed sending-speech signal being obtained by smoothing the sending-speech signal; a smoothed receiving-speech signal calculation means for calculating a smoothed receiving-speech signal from the receiving-speech signal, the smoothed receiving-speech signal being obtained by smoothing the receiving-speech signal; a delay time information generation means for obtaining delay time information reflecting delay characteristics of an echo path in accordance with a correlation between the smoothed sending-speech signal and the smoothed receiving-speech signal; and an update information generation means for obtaining update information indicating execution or suspension of updating of the tap coefficients of the adaptive filter, in accordance with the sending-speech signal, the receiving-speech signal, and the delay time information.
摘要翻译： 可以实时响应回波特性的突然变化并且不需要在回波消除器之外的改变的回波消除器包括平滑的发送语音信号计算装置，用于从发送语音信号计算平滑的发送语音信号 通过平滑发送语音信号获得平滑的发送语音信号; 平滑化的接收语音信号计算装置，用于从接收语音信号计算平滑的接收语音信号，平滑的接收语音信号是通过平滑接收语音信号获得的; 延迟时间信息产生装置，用于根据平滑的发送语音信号和平滑的接收语音信号之间的相关性获得反映回波路径的延迟特性的延迟时间信息; 以及更新信息产生装置，用于根据发送语音信号，接收语音信号和延迟时间信息获得指示执行或停止更新自适应滤波器的抽头系数的更新信息。
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公开(公告)号：US07961855B2
公开(公告)日：2011-06-14
申请号：US12805006
申请日：2010-07-07
申请人： Masashi Takada , Hiromi Aoyagi , Kazuyoshi Akie
发明人： Masashi Takada , Hiromi Aoyagi , Kazuyoshi Akie
IPC分类号： H04M11/00
CPC分类号： H04M7/0069 , H04M1/2535 , H04M1/60 , H04M3/40 , H04M7/006
摘要： Voice communications apparatus intervenes between a telephone set and a broad-band transmission path that has a communication band broader than a voice band limited by the transmitter and receiver characteristics of the telephone set. The voice communications apparatus includes a transmitter frequency characteristic corrector circuit for correcting the frequency characteristic of a signal input from the telephone set, and a receiver frequency characteristic corrector circuit for correcting the frequency characteristic of a signal to be input to the telephone set.
摘要翻译： 语音通信装置介于电话机和具有比由电话机的发送机和接收机特性限制的语音频带宽的通信频带的宽带传输路径之间。 语音通信装置包括用于校正从电话机输入的信号的频率特性的发射机频率特性校正器电路和用于校正要输入到电话机的信号的频率特性的接收机频率特性校正器电路。
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公开(公告)号：US07848495B2
公开(公告)日：2010-12-07
申请号：US11239383
申请日：2005-09-30
申请人： Kazuyoshi Akie , Masashi Takada , Hiromi Aoyagi
发明人： Kazuyoshi Akie , Masashi Takada , Hiromi Aoyagi
CPC分类号： H04M1/2535
摘要： A voice communication apparatus is interposed between a telephone set and a public switched telephone network (PSTN) or a broadband network which can provide a frequency bandwidth broader than a frequency bandwidth of the public switched telephone network. The apparatus selects one of the PSTN and the broadband network, from which a voice signal is input. The apparatus takes account of the selected network, frequency characteristics of the selected network and of the telephone set, and appropriately adjusts frequency characteristics of a voice signal transmitted between the telephone set and the selected network by means of transmitter and receiver band-pass filter units. As a result, both the telephone set and the counterpart communication terminal can receive a voice signal of better transmission quality.
摘要翻译： 语音通信装置被插入在电话机和公共交换电话网（PSTN）或宽带网络之间，该宽带网络可以提供比公共交换电话网络的频带更宽的频带宽度。 该装置选择PSTN和宽带网络中的一个，输入语音信号。 该装置考虑所选择的网络，所选网络和电话机的频率特性，并且通过发射机和接收机带通滤波器单元适当地调整在电话机和所选网络之间传输的语音信号的频率特性 。 结果，电话机和对方通信终端都可以接收更好的传输质量的语音信号。
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公开(公告)号：US20060029086A1
公开(公告)日：2006-02-09
申请号：US11239383
申请日：2005-09-30
申请人： Kazuyoshi Akie , Masashi Takada , Hiromi Aoyagi
发明人： Kazuyoshi Akie , Masashi Takada , Hiromi Aoyagi
IPC分类号： H04L12/56
CPC分类号： H04M1/2535
摘要： A voice communication apparatus is interposed between a telephone set and a public switched telephone network (PSTN) or a broadband network which can provide a frequency bandwidth broader than a frequency bandwidth of the public switched telephone network. The apparatus selects one of the PSTN and the broadband network, from which a voice signal is input. The apparatus takes account of the selected network, frequency characteristics of the selected network and of the telephone set, and appropriately adjusts frequency characteristics of a voice signal transmitted between the telephone set and the selected network by means of transmitter and receiver band-pass filter units. As a result, both the telephone set and the counterpart communication terminal can receive a voice signal of better transmission quality.
摘要翻译： 语音通信装置被插入在电话机和公共交换电话网（PSTN）或宽带网络之间，该宽带网络可以提供比公共交换电话网络的频带更宽的频带宽度。 该装置选择PSTN和宽带网络中的一个，输入语音信号。 该装置考虑所选择的网络，所选网络和电话机的频率特性，并且通过发射机和接收机带通滤波器单元适当地调整在电话机和所选网络之间传输的语音信号的频率特性 。 结果，电话机和对方通信终端都可以接收更好的传输质量的语音信号。
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