This paper introduces the principle and tested results of measuring nodulizing grade by audio frequency method.
介绍了音频法检测铸件球化级别的原理及试验结果。
An adaptive audio digital watermarking method based on frequency masking is proposed in this paper.
文章提出了一种基于频率掩蔽效应的自适应音频数字水印算法。
Position measuring instrument and method, navigation instrument and method, information service and audio-frequency information transmit-receive method.
位置测量仪器和方法，导航仪器和方法，信息服务及声频信息收发方法。
The audio frequency file is built by the method of modeling and coding.
音频文件的产生通过建模和编码的方法实现。
Using super decode-king to obtain multimedia audio-video frequency material from VCD and some files is an effective method to make up the shortage of audio-video material.
利用《超级解霸》，从物美价廉的VCD影碟或其它影文件上抓取影视材料，来丰富多媒体影视素材源，是一种行之有效的弥补影像视素材有限的方法。
In order to improve the ringing method of telephone used in power systems, a type of selective calling device using audio frequency has been developed.
为了使电力系统通信设备的呼叫装置更加使用方便工作可靠，我们研制了以按键电话机发出双音频呼叫信号进行选择接收的音频选号装置。
Based on creating recognition algorithm of audio frequency and video frequency, the recognition method in accordance with HMM is constructed.
在建立音、视频识别算法的基础上，构造出符合HMM的识别方法。
In the design, in view of the breakdown different form, has studied the sound detection law, the pulse magnetic field law, the audio frequency induction method and so on each method principle.
在设计中，针对故障的不同形式，研究了声测法、脉冲磁场法、音频感应法等各种方法的原理。
In the design, in view of the breakdown different form, has studied the sound detection law, the pulse magnetic field law, the audio frequency induction method and so on each method principle.
在设计中，针对故障的不同形式，研究了声测法、脉冲磁场法、音频感应法等各种方法的原理。
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