声频

接收机声频输出电平水平方向回声探测仪

Audio frequency output level of receiver horizontal projection echo sounder

在声频范围内测得赤铁矿介电系数值较大，说明它是一种特殊的电介质。

The dielectric coefficients of hematite ores measured in audio frequency range are always large in value , and show that hematite is a special dielectric .

DSP在新型声频定向系统中的应用

Application of DSP in the Novel Audio Beam Loudspeaker

声频/视频压缩技术在CATV系统的应用

Application of Audio / Video Compression Technique to CATV System

声频定向PVDF超声波传感器的设计与测试

Design and Test of High Directivity PVDF Ultrasonic Transducer

提出了基于MP稀疏分解原子参数的声频分类。

Audio classification based on atomic parameters of sparse decomposition using MP is proposed .

采用了一种利用遗传算法改进SOM网络初始权值的声频分类方法。

Audio classification based on SOM network which initial weights improved by genetic algorithm is used .

船型开关，微动开关，震动开关，滚珠开关，门锁开关，耳机插座，声频插座，音频插座，DC插座，USB插座。

Rocker switch , micro switch , vibration switch , ball switch , door lock switch , headphone jack , audio jack , audio jack , DC jack , AC outlet .

文章主要介绍了声频/视频压缩技术MPEG和H.261标准及其在CATV系统中的应用。

The paper mainly describes the MPEG and H. 261 audio / video compression technique standards and their applications to CATV system .

本次试验，用大地电磁法（MT）、声频大地电磁法（AMT）和可控声频大地电磁法（CSAMT）研究地层和构造。

Magnetotelluric ( MT ), Audiomagnetotelluric ( AMT ) and controlled source audiomagnetotelluric ( CSAMT ) methods were tested to research into formation and structure .

视频、声频和用户数据的H.221的复用和解复用；

H.221 Mux / Demux of video , audio and data ;

在Z线上小波失区（X附近kxa<0.65）横向声频支声子有软化现象，但是在M附近横向声频支声子有硬化现象。

On the line Z , there is softening for transverse acoustic phonon in smaller wave vector zone ( point X near k_xa < 0.65 ), but there is hardening for the transverse acoustic phonon at the point M nearby .

基于小波神经网络的HRTFs逼近与声频仿真

HRTFs approximations and audio simulation based on Wavelet Neural Networks

FFT实时信号分析仪是一个多功能数字化信号分析系统，它能对声频信号进行功率谱、相关、褶积和概率密度等实时分析。

FFT real time signal analyzer is a digital multifunctional signal analytical system . It can perform real time analysis of signals in the range of audio frequency , such as power spectrum , correlation , convolution , probability density , etc.

本文研究用声频振动法测定低收缩添加剂（LPA）与不饱和聚酯树脂（UP）共混固化后的动态弹性模量，试验建立动弹模量与弯曲强度的相关关系，并对其进行数学回归分析。

In this paper the testing method is applied to check dynamic elastic modulus of LPA / UP curing co-compound , establishing dependency relation between modulus and bending strength and carrying out regression analysis .

实验表明，已制成的热极化熊猫光纤，在其上所加调制频率小于1kHz的范围内，会使极化产生的线性电光系数产生声频共振。

The experiments show that the linear electrooptic coefficients will generate resonance at some acoustic frequencies as they are lower than 1 kHz .

多功能的安全管理软件程序利用ADPRO视频传输系统能够远程监控视频和声频。

The multisite security management software application monitors video and audio from remote sites using ADPRO video transmission systems .

本文介绍了一种新型电子学装置，它可以使小功率He-Ne激光器输出功率稳定度达到0.5%，在声频范围的噪声与通常稳流电源相比，可降低20dB。

This paper presents a novel electronic equipment with which laser beam stability excelling 0.5 % can be obtained , and its output noise in comparision with that obtained with an ordinary stabilized current power source can be reduced by about 20 dB in the acoustic frequency range .

过饱和ZAC27合金在自然时效过程初期，阻尼性能迅速而明显地提高，在时效第10d时声频阻尼性能达到最高值，约为7×10-3；

Microstructure changes accompany with the variance of damping capacity . It is found that the damping capacities varies quickly and obviously during natural ageing . The damping capacity reaches the highest value 7 × 10 - 3 at the 10th day .

PASC依据数字声频中两个新的原理：与人耳的听觉特性相适应原理和有效的自适原应理。

PASC achieves highly efficient sound registration by applying two principles absolutely new to digital audio : it is adapted to the natural charateristics of the human ear , and it use a highly intelligent and efficient " adaptive " notation .

随着SACD的日益普及，同目前流行的电压模高保真功放的性能相比，电流模高保真声频功率放大器将会有美好的发展前景。

As the SACD is increasingly popularized , the current mode power amplifier , compared with the prevalent voltage mode Hi-Fi power amplifier , will have a quick development and bright look in the future .

测试结果表明，在声频125～1600Hz的范围内，极化后的吸声性能增加，而隔声量在低频增加，在中高频（500Hz以上）降低。

The results show that in the frequency range of 125 ~ 1 600 Hz , the acoustic absorption performance improved , but the soundproof property improved at the low frequency and decreased beyond 500 Hz .

线性相位数字声频均衡器的研制

REPORTS ON SPECIAL TOPIC Development of Linear Phase Digital Audio Equalizer

本文主要是对车辆的声频噪声信号进行分离研究。

This thesis is focused on the separation vehicle acoustic signal .

本发明揭示一种用于声频编码之方法及装置。

A method and a device for audio coding are disclosed .

电化学伏安分析中放大器的低噪声设计声频信号中频放大器

Low Noise Design of Amplifier in the Voltage-ampere Analysis of Electrochemistry

泡沫铝的声频内耗

Research on the internal friction of foamed aluminium in acoustic frequency

基于心理声学模型和临界频带子波变换的数字声频水印

Audio watermarking based on psychoacoustic model and critical band wavelet transform

有源滤波器在现代声频信息处理设备中的应用

The Application of Active Filters to Modern Audio Signal Processing Equipment

听觉临界频带及其在声频信号处理中的应用

Auditory Critical Band and its Applications in Audio Signal Processing