公开(公告)号：US5390280A

公开(公告)日：1995-02-14

申请号：US974230

申请日：1992-11-10

申请人： Yasuhiko Kato ,  Masao Watari ,  Miyuki Tanaka ,  Akihiko Fujinaka

发明人： Yasuhiko Kato ,  Masao Watari ,  Miyuki Tanaka ,  Akihiko Fujinaka

IPC分类号： G10L15/06 ,  G10L15/20 ,  G10L5/06 ,  G10L9/18

CPC分类号： G10L15/20

摘要： A noise signal supplied from a microphone by way of an analog to digital converter is Fourier converted to calculate a power spectrum of the noise signal by a Fourier converting section. A system controller compares an average value of the power spectrum of the signal being outputted from the microphone at present and an average value of the power spectrum of a noise signal stored in a noise memory at present with each other. When the system controller determines that the difference between the average value of the power spectrum of the signal being outputted from the microphone at present and the average value of the power spectrum of the noise signal stored in the noise memory at present is higher than a predetermined reference value, it outputs a controlling signal to a sound storing and reading out section to store the signal being outputted from the microphone at present into the noise memory. Consequently, the signal being outputted from the microphone at present is stored into the noise memory in place of the noise signal stored in the noise signal at present.

摘要翻译： 通过模数转换器从麦克风提供的噪声信号被傅里叶变换，以通过傅里叶变换部分计算噪声信号的功率谱。 目前，系统控制器将目前从麦克风输出的信号的功率谱的平均值和当前存储在噪声存储器中的噪声信号的功率谱的平均值进行比较。 当系统控制器确定目前从麦克风输出的信号的功率谱的平均值与当前存储在噪声存储器中的噪声信号的功率谱的平均值之间的差异高于预定值 参考值，它将控制信号输出到声音存储和读出部分，以将当前从麦克风输出的信号存储到噪声存储器中。 因此，目前从麦克风输出的信号被代替存储在噪声信号中的噪声信号而被存储在噪声存储器中。

公开(公告)号：US5335261A

公开(公告)日：1994-08-02

申请号：US795781

申请日：1991-11-21

申请人： Akihiko Fujinaka

发明人： Akihiko Fujinaka

IPC分类号： H04M1/19 ,  H04M1/27 ,  H04M1/60 ,  H04Q7/38 ,  H04M11/00 ,  H04B1/38 ,  H04M1/64

CPC分类号： H04M1/271 ,  H04M1/6041

摘要： A radio telephone comprising a main body enclosing a transmitting circuit and a receiving circuit; a handset removably mounted to the main body, the handset including a microphone electrically connected to the transmitting circuit and a speaker electrically connected to the receiving circuit; a voice recognition circuit for recognizing a voice input to the microphone and for performing a dialing operation based on the voice. An extension module is removably mounted on the main body. A mute switch, which also enables the voice recognition circuit, is removably connected to the main body, or to an extension module removably mounted on the main body, thus adding to the portability of the radio telephone.

摘要翻译： 一种无线电话，包括一封闭发射电路的主体和一接收电路; 手机，其可移除地安装到主体，手机包括电连接到发送电路的麦克风和电连接到接收电路的扬声器; 语音识别电路，用于识别输入到麦克风的语音和用于基于该语音执行拨号操作。 延伸模块可拆卸地安装在主体上。 也可以将语音识别电路的静音开关可移除地连接到主体，或者可移除地安装在主体上的扩展模块，从而增加无线电话机的便携性。