声信号采集、判决、解码电路的硬件设计。
Circuit design of sound transduction, acquisition, decoding, judgment.
水下声信号激光探测技术采用了激光接收技术。
The laser detection of underwater acoustic signals exploited a laser receiving technique.
提出用光纤相位传感器代替传统的微音器检测光声信号。
The optical fiber phase sensor is used to replace the traditional microphone to detect photoacoustic signal.
水下弱信号的检测和分类是水声信号处理领域中的难题。
Detection and classification of weak underwater signals are difficult problems in processing acoustic signals.
目的提取直升机声信号谐波频率作为特征用以识别直升机。
Aim To extract harmonic frequencies of helicopter acoustic signal as features for helicopter identification.
这里给出了噪声信号在背景噪声中提取噪声信号的模拟例子。
Finally, a simulative example is given, which is extracting noise signal from mixture of noise signal and background noise.
由此可利用信号双谱，提取舰船辐射噪声信号的非高斯成份。
Therefore, bispectrum is used to extract the non gaussian ingredients from the noise signals of ships.
每天的报警提醒有关使用一个在您所设定的时间声信号经常性的事件。
The daily alarm reminds you about recurring events with an acoustic signal at the time you have set.
本文从声信号检测的观点出发分析了时间压缩相关器的有关理论问题。
The theoretical problems of a compressed-time correlator are investigated from the viewpoint of signal detection.
利用奇异值理论提取包含矩阵的奇异值作为气缸爆发噪声信号的特征。
Singular value is extracted as to feature of cylinder explosive noise signal from Cover Matrix with singular value theory.
该包含矩阵加强了气缸爆发噪声信号在气缸爆发频率所在频段的信息。
The Cover Matrix enhanced information of cylinder explosive noise signal at frequency band of cylinder explosive.
按噪声信号采集方式、重建算法和结果表示方式对该技术进行了分类。
The techniques are categorized in terms of noise signal acquiring methods, reconstruction algorithms, and display modes.
采用ACL8112数据采集卡采集光声信号，然后对其进行软件处理。
The data acquisition of photoacoustic signal by ACL8112 card, and the data processing by software.
水声信号检测技术在国防科技建设中具有重要的理论意义和军事应用价值。
The technology of underwater signal detection has significant theoretical and military values in our national defensive construction.
基于虚拟仪器技术设计与实现了一种用于声场可视化的声信号采集与处理系统。
The design and implementation of an acoustic signal acquisition and processing system used for acoustic field visualization is presented in this paper.
声呐浮标测试系统能够模拟水下声信号，用以检测声呐浮标的工作状态和性能。
The sonar buoy testing system can emulate signal of underwater sound and detect the operating status and performance of sonar buoy.
基于非线性动力学理论的水声信号相空间处理，是水声信号处理的一种新途径。
Signal processing in phase space based on nonlinear dynamics theory is a new method for underwater acoustic signal processing.
文章根据污秽放电伴随的超声信号，提出用声发射信号来反映绝缘子的污闪过程。
In this paper, the method which can judge the working condition of the insulator based on the acoustic emission is given (AE method).
方法：采用水听器作为换能器，通过采集超声信号在空间声场内一点的声压波形。
Methods A hydrophone was used as energy converting equipment to collect wave of acoustic pressure in the field of ultrasound.
文中对井下噪声信号进行频谱分析，用噪声信号中的频谱信息来识别井下流体类型。
In this paper, frequency spectrum of downhole noise signal is analyzed, and the spectrum information extracted is used to identify the types of downhole fluid.
方法：采用水听器作为换能器，采集超声信号在空间声场焦平面上一点的声压波形。
Method:A hydrophone is used as energy converting equipment to collect waves of acoustic pressure in the field of ultrasonic.
次声监测台阵结构的合理设计是抑制环境噪声及增强目标次声信号的一种有效手段。
Proper structure design of the infrasonic monitoring arrays is an effective means to restrain the environment noise and enhance the target infrasonic signal.
分析了LED芯片非接触检测系统噪声信号的功率谱，研究了噪声信号的抑制方法。
The noise power spectra of the non-contact detection system for LED chips and the noise suppression methods are discussed.
研究表明，在不解体的情况下，利用小型柴油机缸盖声信号对其进行故障诊断是可行的。
The study indicates that the noise signal can be used to diagnose the fault of the mini-diesel without disassemble the diesel.
本文得到了在波导传播中的无方向性点源的平均声压、平均强度和声信号振幅的起伏率。
The mean pressure, mean intensity, and the coefficient of variation of amplitude of the signal propagated in wave-guide were obtained in this paper.
找出刀具磨损信息在可听阈内的主要集中频段能提高切削声信号的信噪比，改善识别结果。
Finding out the major concentrated frequency band of tool-wear information can enhance SNR (Signal Noise Ratio) and improve tool-wear degree recognition result.
本文通过对大地传输特性的分析，得出了轮式车辆、履带式车辆和人运动时地声信号的特征。
In this paper, the sound signal characteristic of moving wheel vehicle, track vehicle and mankind is obtained by analysing the propagation characteristics of the ground.
本文通过对大地传输特性的分析，得出了轮式车辆、履带式车辆和人运动时地声信号的特征。
In this paper, the sound signal characteristic of moving wheel vehicle, track vehicle and mankind is obtained by analysing the propagation characteristics of the ground.
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