和声学

This thesis focuses on two main issues of acoustic echo cancellation, namely the adaptation algorithm and the control of adaptation in double talk situation presents all the theory backgrounds.

本文重点的两个主题是声学回声消除技术，也就是在双重谈话的情况下，回声过滤器适应算法和适应控制。

The line may pass through the dust cover centers of the first, second, and third acoustic drivers.

所述直线经过所述第一、第二和第三声学驱动器的防尘罩中心。

There are two basic types of acoustic treatment - absorbers and diffusors.

有两个基本类型的声学处理-吸收和扩散。

This paper uses experimental method to study the acoustic characteristic of plosives, affricates and nasals of Taiyuan dialect .

本文运用实验的方法研究了太原方言的塞音、塞擦音和鼻音的声学特性。

The first one is to use phonetic analysis to delimit the vowel formant ranges of and allophonic and then we categorize the vowels which perceptually sound like 's according to the vowel formant ranges.

三种方法分别为：第一，利用声学中母音共振峰来找出/u/和/o/的共振峰范围，根据这一范围，进而将听觉上认为是/o/的音归类，结果发现仍有包含/o/的字。

The test piece is connected to the acoustic driver and an anechoic termination through two straight pipes.

待测试的声学元件通过两端很短的直管连上白噪声发生器和消声末端。

Selfresonant cavitating jet is a kind of modulated jet with significant impact pressure fluctuations and cavitation effects.

自振空化射流是利用瞬态流和水声学原理调制而成的一种新型射流，本文研究了自振空化射流在常压及围压下的压力脉动特性及其参数影响规律。

In long spaces, such as road or railway tunnels, underground/railway stations, corridors, and concourses, classic room acoustic theory is not applicable since the assumption of a diffuse field does not hold with the extreme dimensional condition.

在长空间中，如公路或铁路的隧道、地铁站、走廊和交通枢纽大厅，由于对扩散场的假设不适用于其极端的尺寸条件，因此无法应用经典的声学理论。

The 3-D numerical methods are used to predict the acoustic attenuation performance and flow resistance characteristics of internal combustion engine exhaust silencer s.

使用三维数值计算方法预测内燃机排气消声器的声学性能和阻力特性。

Additional, increase the share of its wife and little brother hold, ginger family name is familial hold song Er is acoustics the equity of more than 85%, be in charge a position absolutely.

另外，加上其妻子和弟弟持有的股份，姜氏家族持有歌尔声学超过85%的股权，处于绝对控股地位。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。