零率 meaning in Chinese
zero rate
Examples
- The major work and achievement of this paper are presented as follows : ( 1 ) we review the main methods of audio retrieval at home and abroad
对音频信号的短时过零率、短时能量、 mel倒谱系数等进行主要分析。提出均值mfcc系数作为音频特征的方法。 - In this article , double threshold , iteration is applied to improve segmentation algorithm based on signal energy , and short - time zero - crossing rate is proposed for the first time to determine the exact boundaries between different components of heart sound
本文通过使用双门限、迭代等方法，改进了基于信号能量的分段算法，并首次引入短时过零率以更准确地定位分段边界。 - The ball mill load - control apparatus adopted the assembly language and the c51 language to program and its concerned software was designed , including the data collection , the wave - percolation , the short - time average over - zero ratio , the estimation of the power chart and the average - period chart
磨机负荷控制仪软件使用汇编和c51编程，本文进行了相关软件的设计，包括数据采集、滤波、短时平均过零率、功率谱估计和平均周期图等。 - The initial vsd process uses two main characters , the average instantaneous energy and the average instantaneous zero crossing rate ( zcr ) . to make the first recognition for the start and the end , the emphasis of which is to select the appropriate value of the threshold and the length of frame . in the final vsd process , the author compares several characters and confirms the new recognition character
初步分段过程使用了能量和过零率这两个主要特征进行端点检测，重点是合理选择两个重要参数? ?门限和统计帧长度的取值；在最终分段过程中，笔者首先通过比较几种特征的识别效果，选择卡尔曼滤波参数作为再次分段的识别特征，还提出了一种新的识别特征? ?周期性缓变特征，使用这两个特征分别在子语音段内进行端点检测。 - It was demonstrated that this sort of load - control apparatus has superior performance . we used a electric transmitter as the transducer to collect the sound signal , using the daq toolbox of the matlab to achieve the collection of the sound signal , and using the dsp toolbox of the matlab and the sound - launch technology to analyze the time - domain characteristic and the frequency - domain characteristic of the signal , chiefly analyze its short - time average amplitude , its short - time over - zero ratio and its estimate of the power chart and the average - period chart
实验中使用了驻极体话筒作为球磨机声音拾取传感器，利用matlab中的数据采集( daq )工具箱实现对磨音的采集，利用matlab信号分析( dsp )工具箱和声发射技术对磨音进行时域和频域分析，主要分析磨音的短时平均幅度和能量、短时平均过零率、功率谱估计和平均周期图。