公开(公告)号：US06615171B1

公开(公告)日：2003-09-02

申请号：US09776939

申请日：1999-08-13

申请人： Dimitri Kanevsky ,  Stephane Herman Maes ,  Peter S Poon ,  Carl Prochilo

发明人： Dimitri Kanevsky ,  Stephane Herman Maes ,  Peter S Poon ,  Carl Prochilo

IPC分类号： G10L1508

CPC分类号： G10L15/30

摘要： A portable speech signal preprocessing (SSP) device having a microphone for receiving spoken speech and background noise, a digital signal processor (DSP) for processing the received noise into feature vectors, a coupler for coupling to a communication device and for transmission over a communication channel. An automatic speech/speaker recognition (ASSR) server receives over the communication channel the preprocessed speech data and recognizes the spoken speech/speaker. A system having the portable SSP device and the ASSR server can be used to remotely activate, reset, or change PIN codes in smartcards, magnetic cards, or electronic money cards.

摘要翻译： 具有用于接收语音和背景噪声的麦克风的便携式语音信号预处理（SSP）装置，用于将接收到的噪声处理成特征向量的数字信号处理器（DSP），用于耦合到通信设备并用于通信的传输的耦合器 渠道。 自动语音/扬声器识别（ASSR）服务器通过通信信道接收预处理的语音数据，并识别口头语音/扬声器。 具有便携式SSP设备和ASSR服务器的系统可用于远程激活，重置或更改智能卡，磁卡或电子货币卡中的PIN码。

公开(公告)号：US5953700A

公开(公告)日：1999-09-14

申请号：US873079

申请日：1997-06-11

申请人： Dimitri Kanevsky ,  Stephane Herman Maes ,  Peter S. Poon ,  Carl Prochilo

发明人： Dimitri Kanevsky ,  Stephane Herman Maes ,  Peter S. Poon ,  Carl Prochilo

IPC分类号： G10L11/00 ,  G10L15/00 ,  G10L15/02 ,  G10L15/10 ,  G10L15/20 ,  G10L15/28 ,  G10L17/00 ,  G10L21/02 ,  H04M3/42 ,  G10L5/06

CPC分类号： G10L15/30

摘要： A portable acoustic signal (speech signal) preprocessing (SSP) device for accessing an automatic speech/speaker recognition (ASSR) server comprises a microphone for converting sound including speech, silence and background noise signals to analog signals; an analog signals to digital converter for converting the analog signals to digital signals; a digital signal processor (DSP) for generating feature vector data representing the digitized speech and silence/background noise, and for generating channel characterization signals; and an acoustic coupler for converting the feature vector data and the characterization signals to acoustic signals and coupling the acoustic signals to a communication channel to access the ASSR server to perform speech and speaker recognition at a remote location. The SSP device may also be configured to compress and encrypt data transmitted to the ASSR server via the DSP and encryption keys stored in a memory. The ASSR server receives the preprocessed acoustic signals to perform speech/speaker recognition by setting references, selecting appropriate decoding models and algorithms to decode the acoustic signals by modeling the channel transfer function from the channel characterization signals and processing the silence/background noise data to reduce word error rate for speech recognition and to perform accurate speaker recognition. A client/server system having the portable SSP device and the ASSR server can be used to remotely activate, reset, or change personal identification numbers (PINs) or user passwords for smartcards, magnetic cards, or electronic money cards.

摘要翻译： 用于访问自动语音/说话人识别（ASSR）服务器的便携式声音信号（语音信号）预处理（SSP）设备包括用于将包括语音，静音和背景噪声信号的声音转换为模拟信号的麦克风; 模拟信号到数字转换器，用于将模拟信号转换成数字信号; 数字信号处理器（DSP），用于产生表示数字化语音和静音/背景噪声的特征向量数据，并用于产生信道表征信号; 以及用于将特征矢量数据和表征信号转换为声信号并将声信号耦合到通信信道以访问ASSR服务器以在远程位置执行语音和说话者识别的声耦合器。 SSP设备还可以被配置为经由DSP和存储在存储器中的加密密钥来压缩和加密发送到ASSR服务器的数据。 ASSR服务器通过设置参考来接收预处理的声信号以执行语音/说话者识别，通过从信道表征信号建模信道传递函数并处理静音/背景噪声数据来减少声音信号，选择适当的解码模型和算法来解码声信号 用于语音识别的字错误率并执行准确的说话者识别。 具有便携式SSP设备和ASSR服务器的客户端/服务器系统可用于远程激活，重置或更改智能卡，磁卡或电子货币卡的个人识别号码（PIN）或用户密码。