1) zero-crossing rate
过零率
1.
This paper firstly introduces some related concepts of speech end-point detection,and then makes end-point detection by the combination of short time average magnitude and short time average zero-crossing rate.
首先简介语音信号端点检测涉及到的几个基本概念,然后采用短时平均幅度与短时平均过零率相结合的双门限算法来对语音信号进行端点检测。
2.
MAV(Mean Absolute Value), ZCR(Zero-Crossing Rate), as well as three order AR model coefficients, were used to extract SEMG signal features, BP(Back Propagrate) neural network and SOFM(Self-Organizing Feature Map) neural network was used as classifiers to recognize hand gestures.
利用带通滤波器对采集到的原始SEMG信号进行预处理,以抑制噪声;采用移动平均算法对活动段进行检测,以判断有效动作信号的起始点和终止点;提取幅度绝对值均值、过零率和3阶AR模型系数作为SEMG信号的特征;采用BP神经网络和SOFM网络对动作SEMG信号进行分类。
3.
Based on the traditional two-para meters (short-term energy and zero-crossing rate) algorithm,it involves self-relation function and short-term average range as decision parameters.
该方法是在传统两参数(短时能量和过零率)算法基础上增加了自相关函数和短时平均幅度作为判决参数,并通过对短时能量、平均幅度、短时过零率曲线等参数的分析和计算,来达到减少清/浊音信号的误判率的目的。
2) ZCR
过零率
1.
According to the difference between the FER of vowels and noises,and the characteristics of the ZCR of consonants,it is proposed in this paper that a modified algorithm endpoint detecting of speech using FER.
端点检测的不准确是造成语音识别错误的一个重要原因,根据元音和噪音信号频能比的差异,以及辅音信号的过零率特点,论文提出了一种改进的基于频能比的端点检测算法———MEPD-FER,实验表明该算法可以在有噪音存在的情况下快速准确地确定出语音信号的端点。
3) zero crossing rate
过零率
1.
Simulation results show that,as compared with the traditional algorithm based on the short-time energy or zero crossing rate,the proposed method can effectively detect the endpoints of speech at low SNR.
仿真结果表明,与传统的基于短时能量,过零率语音端点检测算法相比,在低信噪比环境下,该算法仍可以有效的检测出起止端点。
4) zero-cross ratio
过零率
1.
When the signal to noise ratio(SNR) is low,judge whether the speech contains the high occasional noise in the period unvoiced or voiced,according to the short-time energy and zero-cross ratio of the speech.
提出在信噪比(SNR)较低的情况下,根据语音短时能量和过零率,判断在无声或有声期间是否偶然的噪声过高,从而设定合适的参数降低噪声。
5) Zero-crossing
过零率
1.
The anal-ysis about the endpoint detection methods with energy and Zero-crossing,amend the tradition Zero-crossing measurements and modi-fied by the dynamic length of windows.
本文研究了传统的短时能量和过零率相结合的语音端点检测算法,修正了传统过零率的计算。
6) Zero cross ratio(ZCR)
过零率(ZCR)
补充资料：零息票债券；零券息债券
零息票债券；零券息债券一种以低于票面价值的价格发行的债务工具。债券不支付任何票息；它在到期日是以面值赎回的。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条