1) Pitch Detection Algorithm
基音频率检测
1.
A new Pitch Detection Algorithm (PDA) based on multi-phase filter group is presented in this paper.
本文提出了一种基于多相滤波器组的语音基音频率检测方法。
2) sonic testing
音频检测
1.
Based on an analysis of vibration and damping capacity, a sonic testing instrument for the measurement of bomb chamber volume is developed.
在对振动和内耗理论进行分析的基础上 ,设计并研制出弹体药室容积音频检测仪。
2.
A sonic testing new method for detecting the volume of bomb chamber is introduced in this paper.
提出了一种用于弹体药室容积的音频检测新方法。
3.
The sonic testing system for pressure vessel study the sonic transmitting regulation in metal material, then we use horizontal vibrancy to build a mathematic model though sonic parameters and the structure, strength parameters of pressure vessel.
本文研究音频信号在金属材料内部的传递规律,把横向振动引入到音频检测中,根据压力容器结构、强度性能参数与音频参数建立数学模型,与标准的压力容器质量参数进行对比,将压力容器结构缺陷特征提取出来进行质量判定,实现对压力容器结构及性能参数(强度、刚度)等的测定,本课题完成了压力容器音频检测系统USB接口的软硬件设计,可以把测得的数据通过USB接口输出到计算机进行储存,并分析压力容器结构容积尺寸结构改变对音频参数的影响,快速准确检测出服役期的压力容器或新产品的结构强度、刚度和表面裂纹缺陷;由于压力容器材料生产的工艺过程或服役期的腐蚀和磨损造成的材料疵病,也能够检测出容器结构尺寸的细微变化对压力容器质量造成的影响。
3) Fundamental frequency
基音频率
1.
According to the fundamental frequency of speech is low,the filter charater of wavelet transform is applied to reject the high-frequency signal of speech,and then detecting the fundamental frequency of speech by using ACF which is a simple and effective algorithm.
根据语音的基音频率较低这一特点,利用小波变换的滤波特性剔除了语音的高频部分,然后再利用计算速度较快的自相关函数法检测语音的基音频率,有效剔除了高频共振峰和噪音的影响,其估计基音频率准确性高,稳定性好,运算速度较快。
4) pitch
[英][pɪtʃ] [美][pɪtʃ]
基音频率
1.
The speech was modeled and decomposed by use of the harmonic sinusoidal modal;the pitch was extracted and the rhythm character of speech was transformed based on gauss model;the last 10 coefficients of harmonic sinusoidal model amplitude were extracted and the spectral feature was transformed based on VQ and codebook mapping method.
利用正弦谐波模型对语音进行建模和分解,提取语音的基音频率,利用高斯建模和变换实现语音韵律特征的变换;提取出正弦谐波幅度的后10阶系数,作为语音的频谱特征参数,利用矢量量化和码书映射的方法实现语音频谱特征的变换。
2.
At last,the posterior probability of the feature Mel-Frequency Cepstral Coefficients(MFCC) was combined with the pitch result to form a new method for computing.
首先概述了特征提取、识别方法及性别识别的过程;然后通过减少提取特征的语音帧数和降低高斯混合模型的混合阶数来提高性别识别速度;最后,将由M el频率倒谱参数(MFCC)特征和基音频率特征两种方法得到的测试样本后验概率结合,提出新的计算测试样本后验概率的方法。
3.
In addition ,we study pitch which is a common feature of audio ,and use it to distinguish between speech and music.
另外,本文就一种最常见的特征基音频率进行了一定的研究,并将之用于区分语音、音乐的系统中去,完成了一些实验。
5) pitch frequency
基音频率
1.
In the paper, the process of the pitch frequency detection is firstly introduced, then the speech data of speakers of different ages , sexes as well as the speech data with variable consonant actions are estimated with different length of frame.
本文首先简要介绍了基音频率的检测过程,然后对不同年龄层次、不同性别说话人和不同辅音作用下的语音数据,按照不同的帧长进行基音检测。
2.
MFCC parameters is main describes the spectrum envelope features,which is used to state the vacal track characterizatics,while ignoring the impact of pitch frequency.
MFCC参数主要描述了表征声道特性的谱包络特征,而忽略了基音频率对它的影响。
6) frequency detection
频率检测
1.
This interface circuit consists of A/D converter, frequency divider and 'AND' gate circuit,counter,computerfrequency detection and software,ete.
该接口电路包括Ａ／Ｄ转换、分频及＂与＂门电路、计数器电路、计算机频率检测和软件等部分，其特点是测量精度高，速度快，电路简单、可靠，适用于ＴＩＧ焊接馆深振荡频率的检测。
2.
FPGA utilized to design the frequency detection module, this instrument can be used to measure 8-channel frequency at the same time.
该系统利用FPGA设计频率检测系统,可同时检测8个通道的频率,通过对频率的测量可实时连续地监测反应的进行,达到定性定量检测的目的。
3.
To acquire the information of railway binary frequency-shift keying(2FSK)signal s upper and down side frequencies and base low-frequency with high accuracy in real time,a novel frequency detection algorithm compatible with China-made system and France UM71 system was proposed.
为实时高精度获取铁道二进制频移键控信号的上、下边频和基带低频信息,提出一种可兼容国产制式和法国UM71制式的频率检测新方法。
补充资料：频率计量(见时间频率计量)
频率计量(见时间频率计量)
frequency metrology: see time and frequency metrology
口n IQ liliang顷率频率计皿(f比quency metrolo盯) 计t。见时闰
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