在语音信号的理论和应用中,所用的语音数据大部分都是在接近理想的条件下采集的。然而,在语音通信过程中会不可避免的受到各种噪声的干扰,这种干扰将最终导致接收者接收到的语音信号已非纯净的原始语音,而是受到噪声污染后的带噪语音。
语音增强作为一种抑制背景噪声、提高语音质量的有效手段,在实际应用中有重要价值。语音增强是一种当语音通信系统的输入或输出信号受到噪声干扰时提高其性能的技术。它的主要目的是降低背景噪声,提高语音质量或抑制同声道语音干扰。简单的讲,就是从带噪声语音信号中提取尽可能纯净的原始语音。传统的语音增强的方法有很多,如:滤波器法语音增强,非线性处理语音增强,减谱法语音增强,自相关相减法语音增强等等。噪声对消的基本原理是从带噪语音中减去噪声。自适应滤波是研究一类结构和参数可以改变或调整的系统。自适应滤波器通常采用FIR滤波器,其系数可以采用最小均方(LMS)法进行估计。最小均方(LMS)算法的基本思路与梯度下降法是一致的,不同之处仅在于计算中用梯度向量的估计来代替真实的梯度。所以说,LMS算法是由梯度下降法导出的,是对梯度下降法的近似简化,更符合实际应用
本课题研究自适应滤波在语音增强中的应用,用LMS算法设计FIR自适应滤波器,用自适应干扰对消原理滤除噪声,并通过仿真研究语音增强的效果。
时间很急~~~谢谢了~~~感激不尽!
不要用翻译软件的~~~~
哪位大侠能帮我把这段对话翻译成英文?
Dialogue:A: do you take the book to go?B: class ah!A: What? No afternoon classes. Do not you know?B: No classes? Oh! Right of the! Think of it, today is Wednesday afternoon, did all right.A: do not you? Ha ha! Think of the University of leisure really ah! Week...
哪位大侠能帮我翻译一下这段话啊? "他们说撒谎的人是小狗... 我已经不...
They say that lying person's a dog... I already did not think you... Tomas"
请问哪位大侠可以帮忙翻译这段文字成英文?拜托拜托!
Here, I regard the friendship among colleages as the dependent affection.最后一句不太理解,勉强翻译的
哪位大侠能把这一段话口语化的翻译成英文,谢谢! 急急急
Put the egg in the freshwater, it's gonna sink as its gravity is a little larger than its buoyancy. But when you put the same egg in the saltwater, it's gonna float, because the gravity doesn't change but the buoyancy of the saltwater increases. This relatively larger ...
哪位大侠帮我把下面文段翻译成英文
In my eyes, the ant is so not worth mentioning, I never imagined world of ants. This film is really an eye-opener. The hospitality of the lotus, discipline, unity of the ant colony, and the Big Mac -- Ladybug of fierce fighting ... ... These shots that have left a ...
哪位大侠帮能帮我把底下这话翻译成英文?
this packing factory is a little far from quanZhou and therefore the traffic is quite inconvenient. We have rented two floors of a building as our factory: the first floor is for office use, the third floor is for manufacture use, with approximately 10 workers. Before, these ...
哪位大侠帮我翻译一下成英文,1他不来我不去2.不怕慢只怕站3.不到黄河...
he will not come ,nor will i,do not be afraid of being slow but stop without end no hopelessness
有哪个英文高手,可以帮我翻译一个这段话吗,万分感谢!
Good morning, the judges, I am very honored to have the opportunity to introduce themselves to you. My name Jiao Yang Xiaomei, since I graduated, I have been discrimination in Zhongshan City, Rock Hill District, first primary schools. In the meantime, I served as middle and ...
哪位大侠帮忙翻译一下: 与您携手,改变生活 英文
hand in hand with you, change our life
摆脱各位大哥大姐大侠们,帮我把这些话翻译成正宗标准的英文语句。 小弟...
不知为什么我变得很奇怪 I don't know why I become so strange 为什么看到你我会神不守舍 why when I see you my soul isn't be with my body?我想每天都看到你 I want to see you every day 没有你我会有点不知所措 I don't know what to do without you 这难以...