基本解释：声频信号测试
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Audio directional loudspeaker is a novel loudspeaker which can generate an audio signal with high directivity by utilizing the parametric array principle.声频定向扬声器是利用参量阵原理,产生高指向性声频信号的新一代扬声器。
In this paper,a multi-channel underwater acoustic signal measurement system based on virtual instrument technology is presented which has functions such as multi-channel signal synchronous acquiring,signal processing,data saving,data transferring,data reviewing,report cr.本文介绍了基于虚拟仪器技术的多通道水声信号测试系统,该系统具有多通道信号的同步采集、处理、数据保存、传输和回放及报表生成和打印等功能,能够极大地减小完成测试任务的工作量及提高测试效率。
sound IF amplifier tube声频信号中频放大器
HF transistorized signal generator晶体管高频信号发声器
FM stereo signal generator调频立体声信号产生器
A continuous signal, or sound, of one particular frequency.一种具有特定频率的连续信号或声音。
Performance analysis of echo synchronous signal in audio watermarking音频水印中回声同步信号的性能分析
Feature extraction of ultrasonic echo signals(RF);超声回波射频(RF)信号的特征值提取
Medium and low frequency underwater acoustic signals detecting with laser interferometry中低频水下声信号的激光干涉法探测
Time-Frequency Distribution of Acoustic and Vibration Signals Based on Harmonic Wavelet Transformation噪声和振动信号的谐波小波时频表示
The video signal is directed to the CRT through a sound trap which eliminates the sound-carrier frequency.视频信号通过声音陷波电路，消除声音载波频率，直达CRT。
Time-Frequency Analysis of Engine Vibration and Noise Signals and Research on the Blind Separation Technology for Source Signals;内燃机振声信号时频特性分析及源信号盲分离技术研究
The Research of Array Acoustic Logging Signal Process Based on the Time-Frequency Signal Analysis基于时频信号分析的阵列声波测井信号处理研究
A depth signal detection method based on single-frequency double-pulse underwater acoustic tracking signal system一种同频双脉冲水声跟踪信号体制下深度信号检测方法
ratio of carrier-to-interfering signal载频信号对干扰信号比
Spectrum Feature of Step Signal with White Noise and Method of Noise Reducing含白噪声阶跃信号的频谱特性及去噪分析
Research of the Low-frequency Signal Detection in Passive Sonar System;被动声纳系统中低频信号的检测技术研究
The Research on Ultrasonic Signal Processing Method Based on Time-Frequency Analysis;基于时频分析的超声信号处理方法的研究
The Research of Beamforming Technique in Low Radiated Noise Submarine Measurement;波束形成技术在声频弱信号测量系统中研究
Feature Extraction of Underwater Acoustic Signals Based on the Cross-components of Time-Frequency Distribution;基于时频分布交叉项的水声信号特征提取
