首页> 外国专利> ECHO PROTECTION CIRCUIT, DISITAL SIGNAL PROCESSING CIRCUIT, METHOD FOR SETTING FILTER COEFFICIENTS OF ECHO PROTECTION CIRCUIT, METHOD OF SETTING FILTER COEFFICIENTS OF DISITAL SIGNAL PROCESSING CIRCUIT, PROGRAM FOR SETTING FILTER COEFFICIENTS OF ECHO PROTECTION CIRCUIT, AND PROGRAM FOR SETTING FILTER COEFFICIENTS OF DISITAL SIGNAL PROCESSING CIRCUIT

ECHO PROTECTION CIRCUIT, DISITAL SIGNAL PROCESSING CIRCUIT, METHOD FOR SETTING FILTER COEFFICIENTS OF ECHO PROTECTION CIRCUIT, METHOD OF SETTING FILTER COEFFICIENTS OF DISITAL SIGNAL PROCESSING CIRCUIT, PROGRAM FOR SETTING FILTER COEFFICIENTS OF ECHO PROTECTION CIRCUIT, AND PROGRAM FOR SETTING FILTER COEFFICIENTS OF DISITAL SIGNAL PROCESSING CIRCUIT

机译：回波保护电路，离散信号处理电路，设置回波保护电路的过滤系数的方法，设置离散信号处理电路的过滤系数的方法，设置过滤系数的程序，用于设置过滤器系数的系数和程序的保护系数的程序电路图

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摘要

The present and invention is effective as for the purpose of preventing an echo, a first input signal and the input terminal is input, the first input a first FIR filter and the 2 FIR filter in which a signal is input from the input terminal, a first FIR the output signal from the filter output, or the output, or the output signal is input or the second input and output terminals which input signal is input, a 1 FIR filter second FIR filter from the output signal and the signal sum of the two input signals of the and a subtraction circuit for subtracting an output signal, an output terminal to which an output signal from the subtraction circuit output, and the 1 FIR filter and the 2 FIR filter, the output signal from the output terminal only the output signal of the 1 FIR filter and characterized by having the filter coefficients to remove or attenuate a signal. ; Echo prevention circuit, the AD converter, FIR filter, the multiplier circuit, the impulse response storing memory, registers, a filter coefficient storage memory, the earphone-microphone

机译：为了防止回声，本发明是有效的，输入第一输入信号和输入端子，第一输入第一FIR滤波器和第二FIR滤波器，其中从输入端子输入信号，第一FIR是来自滤波器输出的输出信号，或者是输出，或者是输出信号是输入的，或者第二输入和输出端子是输入信号的输入，一个FIR滤波器是第二FIR滤波器，其输出信号与信号的和和减法电路的两个输入信号，用于减去输出信号，减法电路的输出信号输出到输出端子，以及1 FIR滤波器和2 FIR滤波器，来自输出端子的输出信号仅是输出1 FIR滤波器的信号，其特征在于具有滤波器系数以去除或衰减信号。 ;回波防止电路，AD转换器，FIR滤波器，乘法器电路，脉冲响应存储存储器，寄存器，滤波器系数存储存储器，耳机麦克风

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公开/公告号KR20060103147A

专利类型
公开/公告日2006-09-28

原文格式PDF
申请/专利权人 SANYO ELECTRIC CO. LTD.;
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申请/专利号KR20060026095
发明设计人 OHASHI HIDEKI;OKUDA KOZO;INOUE TAKEO;
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申请日2006-03-22
分类号H04M9/08;H04B7/26;H04B3/20;
国家 KR
入库时间 2022-08-21 21:24:54

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