acoustical signal

Detection of cracked-shell eggs using acoustic signal and fuzzy recognition;

利用敲击声音信号进行禽蛋破损检测和模糊识别

When the running situation of a rotating machine becomes abnormal or a part of it does not work well,it usually generates a periodic vibration signal or a periodic acoustic signal,which generally are periodic impulse signals with relatively strong noise.

当旋转机械运行状态出现异常或某个部分发生故障时,通常会产生周期性的振动信号或发出周期性的声音信号。

Through the features analysis of acoustic signals in time domain and frequency domain which is recieved,by giving a little force to the adhesive structure, can be extracted the features related to the adhesion.

对粘接结构施加微力 ,通过对声音信号在时域、频域上的特征分析 ,提取出与粘接有关的特征量 。

Design of Sound Signal Acquisition System Based on DSP and USB;

基于DSP和USB的声音信号采集系统设计

In this paper,we investigated and analyzed the sound signals arisen during no-load planer operation.

在刨床的运转过程中,会产生一定的声音信号,而且这种声音信号自身具有一定的特征。

In order to detect the rub-impact position, the paper bases on the way of combining sound signal with key-phase signal to fix on the position.

旋转机械转子系统动静件碰摩故障发生频繁,为检测其位置,本文采用声音信号联合键相 位信号的方法来确定其碰摩位置,通过试验采集碰摩时的数据并用此方法求得碰摩位置,与实测的 碰摩位置基本吻合,表明此方法具有较好的效果。

Data recall and analysis system of heart sounds and ECG signal based on LabVIEW;

心音信号与心电信号回放与分析系统

In the course of recording heart sound, it is inevitable that many kinds of noise will be merged in the main signal.

在对心音信号进行进一步的处理之前,必须对噪声加以抑制。

In process of recording heart sound,it is inevitable that many kinds of noise will be merged in the main signal.

在采集心音信号过程中,难免要引入噪声,这些噪声影响到心音的分析结果。

Bispectrum estimation and its application in analysis of heart sound signals;

双谱估计及其在心音信号分析中的应用

Analysing heart sound signals using wavelet transform;

利用小波变换分析心音信号

Study of Myocardial Inotropism and Chronotropism Based on Telemetering Heart Sound Signal;

基于心音信号遥测的心肌变力性与变时性的研究

Research on signal processing of heart sounds to diagnose coronary artery disease;

基于心音信号处理的冠心病诊断的研究

This paper described a new system for recording, processing and analyzing heart sounds.

主要阐述了心音信号的意义,介绍了传统心音听诊方面的缺点。

This paper describs a new system for gathering heart sounds.

描述了心音信号的采集系统的新型设计,给出了高性能的心音传感器、前向处理电路、A/D转换电路和与PC机的高速接口电路。

Method of solving LPC coefficients of speech signals;

一种语音信号线性预测系数的求解新方法

the Character Analysis of Speech Signal with Time and Frequency Based on MATLAB;

基于MATLAB的语音信号时频域参数分析

Method to determine delay time of speech signal in reconstructed phase space;

语音信号相空间重构中时间延迟的选择方法

This paper presents a new kind of collecting and processing system of the sound signal of larynx where double sound cards and software filter are used.

介绍了一种新型的喉音信号采集与处理系统。

Blind source separation of speech signals based on the amplitude correlation of neighbour bins;

基于相邻频点幅度相关的语音信号盲源分离

The Study of Blind Source Separation of Speech Signals;

语音信号盲分离技术的研究与应用

Based on the analysis of average displacement (AD) method for selection of time delay in phase space reconstruction of speech signals, this paper modifies the original measurement of AD method to get a better criterion for proper time delay selection, which has a sound theoretic basis and can produce better effect.

改进的平均位移法具有更强的理论依据；应用于语音信号相空间重构的仿真实验表明，其度量一般情况下可得到合适的时间延迟。