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Environment Adaptive Sound Localization for Multi-Channel Surround Sound System 多声道环绕声系统的环境自适应声音定位
Pub Date : 2016-12-31 DOI: 10.7236/IJASC.2016.5.4.21
Yoon Bae Lee, V. Mariappan, Juphil Cho, S. Lee
Recent development in multi-channel surround is emerging in various formats to provide better stereoscopic and sound effects to consumers in recent broadcasting. The ability sound localize the sound sources in space is most considerable design factor on multi-channel surround system for human earing perception model. However, this paper propose the change of the sound localization according to the spacing of the speakers, which is not covered in the existing research focus on sound system design. Presently the sound system uses the position and number of the speakers to localize the sound. In the multi-channel surround environment, the proposed design uses the sound localization is caused by the directional characteristics of the speaker, the distance between the speakers and the distance between the listener and the speaker according to the directivity is required. The proposed design is simulated using virtual measurement with MATLAB simulation environment and performances are measured.
多声道环绕的最新发展正在以各种格式出现,以便在最近的广播中为消费者提供更好的立体感和声音效果。在人类听觉感知模型的多声道环绕系统中,声音对空间声源的定位能力是最重要的设计因素。然而,本文提出了根据扬声器间距改变声音定位的方法,这在现有的音响系统设计研究中并没有涉及到。目前,音响系统使用扬声器的位置和数量来定位声音。在多声道环绕环境下,所提出的设计利用的声音定位是由扬声器的方向性特性引起的,扬声器之间的距离以及听者与扬声器之间的距离根据方向性是需要的。利用MATLAB仿真环境对所提出的设计进行了虚拟测量仿真,并对其性能进行了测试。
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引用次数: 0
Code-Reuse Attack Detection Using Kullback-Leibler Divergence in IoT 物联网中基于Kullback-Leibler散度的代码重用攻击检测
Pub Date : 2016-12-31 DOI: 10.7236/IJASC.2016.5.4.54
J. Ho
Code-reuse attacks are very dangerous in various systems. This is because they do not inject malicious codes into target systems, but reuse the instruction sequences in executable files or libraries of target systems. Moreover, code-reuse attacks could be more harmful to IoT systems in the sense that it may not be easy to devise efficient and effective mechanism for code-reuse attack detection in resource-restricted IoT devices. In this paper, we propose a detection scheme with using Kullback-Leibler (KL) divergence to combat against code-reuse attacks in IoT. Specifically, we detect code-reuse attacks by calculating KL divergence between the probability distributions of the packets that generate from IoT devices and contain code region addresses in memory system and the probability distributions of the packets that come to IoT devices and contain code region addresses in memory system, checking if the computed KL divergence is abnormal.
代码重用攻击在各种系统中都是非常危险的。这是因为它们不会将恶意代码注入目标系统,而是重用目标系统的可执行文件或库中的指令序列。此外,代码重用攻击对物联网系统的危害更大,因为在资源受限的物联网设备中,可能不容易设计出高效有效的代码重用攻击检测机制。在本文中,我们提出了一种利用Kullback-Leibler (KL)发散来对抗物联网中的代码重用攻击的检测方案。具体来说,我们通过计算从物联网设备产生的包含内存系统代码区域地址的数据包的概率分布与到达物联网设备并包含内存系统代码区域地址的数据包的概率分布之间的KL散度来检测代码重用攻击,检查计算的KL散度是否异常。
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引用次数: 3
Implementation of Algorithm to Write Articles by Stock Robot 股票机器人写文章算法的实现
Pub Date : 2016-12-31 DOI: 10.7236/IJASC.2016.5.4.40
Darius Sim, S. Shin
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引用次数: 4
Key Management Server Design for Providing Cryptographic Service in Cloud Computing Environment (Services in a Cloud Environment) 云计算环境下提供加密服务的密钥管理服务器设计(云环境下的服务)
Pub Date : 2016-12-31 DOI: 10.7236/IJASC.2016.5.4.26
Kibong Jung, S. Shin
In a cloud computing environment, a cryptographic service allows an information owner to encrypt the information and send it to a cloud server as well as to receive and decode encrypted data from the server which guarantees the confidentiality of shared information. However, if an attacker gains a coded data and has access to an encryption key via cloud server, then the server will be unable to prevent data leaks by a cloud service provider. In this paper, we proposed a key management server which does not allow an attacker to access to a coded key of the owners and prevents data leaks by a cloud service provider. A key management server provides a service where a server receives a coded public key of an information user from an owner and delivers a coded key to a user. Using a key management server proposed in this paper, we validated that the server can secure the confidentiality of an encryption key of data owners and efficiently distribute keys to data users
在云计算环境中,加密服务允许信息所有者对信息进行加密并将其发送到云服务器,以及从服务器接收和解码加密的数据,从而保证共享信息的机密性。但是,如果攻击者获得编码数据并通过云服务器访问加密密钥,则服务器将无法阻止云服务提供商泄露数据。在本文中,我们提出了一种密钥管理服务器,它不允许攻击者访问所有者的编码密钥,并防止云服务提供商泄露数据。密钥管理服务器提供这样一种服务:服务器从所有者那里接收信息用户的编码公钥,并将编码密钥交付给用户。使用本文提出的密钥管理服务器,验证了该服务器能够保护数据所有者加密密钥的机密性,并有效地将密钥分发给数据用户
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引用次数: 0
Optimal Adaptive Filter Design of M-wave Elimination for Treating Tooth Grinding 磨齿m波消除自适应滤波器优化设计
Pub Date : 2016-12-31 DOI: 10.7236/IJASC.2016.5.4.66
H. Yeom
When tooth grinding occurs, electrical stimulation is given at the same time, and tooth grinding stops on such stimulation. Electromyography signals are used as control signals of electrical stimulation to disturb tooth grinding. However because of the electrical stimulation, the M-waves are generated and mixed with spontaneous electromyogram. In this study, we designed an optimal filter to remove M-wave and conserve spontaneous electromyogram simultaneously. The inverse power method (IPM) showed that the optimal filter coefficient is the eigenvector corresponding to the minimum eigenvalue of the input covariance matrix. In order to evaluate the performance of the optimal filter, we compared using a conventional band pass filter and adaptive filter using least mean square algorithm. The experimental results show that the optimal filter can effectively remove the M-wave compared to the previously studied prediction error filter it in practice because of cost and difficulties in the examination method. We can define the EMG signal generated at the beginning of ejaculation as a voluntary EMG signal. There is a signals. It is shown that the optimization process with two constraints is the same as that of a typical eigenfilter design. Finally, the optimal filter has an eigenvector corresponding to the minimum eigenvalue of the input covariance matrix as a coefficient. We also propose a method for adaptively implementing the proposed optimal filter using inverse power method (IPM). And we verify the optimization of the proposed method through experimental process using simulation data.
磨牙发生时,同时给予电刺激,在电刺激下停止磨牙。利用肌电信号作为电刺激的控制信号干扰磨牙。然而,由于电刺激,m波产生并与自发肌电图混合。在这项研究中,我们设计了一个最佳的过滤器,同时去除m波和保留自发肌电图。逆幂方法(IPM)表明,最优滤波系数是输入协方差矩阵最小特征值对应的特征向量。为了评估最优滤波器的性能,我们比较了使用传统带通滤波器和使用最小均方算法的自适应滤波器。实验结果表明,与以往研究的预测误差滤波器相比,该滤波器在实际应用中由于成本和检验方法的困难,可以有效地去除m波。我们可以将射精开始时产生的肌电信号定义为自发性肌电信号。有一个信号。结果表明,两个约束条件下的优化过程与典型特征滤波器设计的优化过程相同。最后,最优滤波器具有与输入协方差矩阵的最小特征值相对应的特征向量作为系数。我们还提出了一种使用逆功率法(IPM)自适应实现所提出的最优滤波器的方法。并利用仿真数据通过实验过程验证了所提方法的优化效果。
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引用次数: 0
Transcutaneous Electrical Nerve Stimulation System for Treating Tinnitus based on the Cortex-M4 Microcontroller 基于Cortex-M4微控制器的经皮神经电刺激系统治疗耳鸣
Pub Date : 2016-12-31 DOI: 10.7236/IJASC.2016.5.4.10
Jaeung Lee, H. Yeom
Among the methods of treating tinnitus, the transcutaneous clectrical nerve stimulation (TENS) method of treating by electrical stimulation is common. However, there is a problem that surgical operation is required to stimulate the vagus nerve (VN) main trunk near most of the bronchus. Alternatively, we found that the same effect could be achieved by electrically stimulating the vagus nerve VN branch (Arnold's nerve) distributed in the outer ear. The TENS system for stimulation of vagus nerve has been developed, but it has not been able to implement to stimulate as a parameter optimized for the patient by simultaneously playing the sound of eliminating the tinnitus frequency. Therefore, in this paper, it is important to develop a safe and practical TENS device for tinnitus treatment based on a 32-bit microprocessor that simultaneously applies non-invasive and notched sounds and to develop optimal treatment methods for treating tinnitus.
在治疗耳鸣的方法中,经皮神经电刺激法(TENS)是常用的电刺激治疗方法。然而,有一个问题是,需要手术来刺激大部分支气管附近的迷走神经主干。另外,我们发现电刺激分布在外耳的迷走神经VN分支(阿诺德神经)也能达到同样的效果。刺激迷走神经的TENS系统已经开发出来,但还没有能够实现通过同时播放消除耳鸣频率的声音来为患者优化刺激参数。因此,在本文中,开发一种基于32位微处理器的安全实用的耳鸣治疗TENS装置,同时应用非侵入性和陷波声,并开发治疗耳鸣的最佳治疗方法具有重要意义。
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引用次数: 0
Fast key-frame extraction for 3D reconstruction from a handheld video 快速关键帧提取3D重建从手持视频
Pub Date : 2016-12-31 DOI: 10.7236/IJASC.2016.5.4.1
Jongho Choi, Soon-chul Kwon, Kwang-Chul Son, Jisang Yoo
In order to reconstruct a 3D model in video sequences, to select key frames that are easy to estimate a geometric model is essential. This paper proposes a method to easily extract informative frames from a handheld video. The method combines selection criteria based on appropriate-baseline determination between frames, frame jumping for fast searching in the video, geometric robust information criterion (GRIC) scores for the frame-to-frame homography and fundamental matrix, and blurry-frame removal. Through experiments with videos taken in indoor space, the proposed method shows creating a more robust 3D point cloud than existing methods, even in the presence of motion blur and degenerate motions.
为了在视频序列中重建三维模型,选择易于估计几何模型的关键帧是至关重要的。本文提出了一种从手持视频中轻松提取信息帧的方法。该方法结合了基于帧间适当基线确定的选择准则、用于视频快速搜索的帧跳转、用于帧间单应性和基本矩阵的几何鲁棒信息准则(GRIC)评分以及模糊帧去除。通过在室内空间拍摄视频的实验,所提出的方法表明,即使在存在运动模糊和退化运动的情况下,也比现有方法创建更鲁棒的3D点云。
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引用次数: 3
An Effective Data Model for Forecasting and Analyzing Securities Data 证券数据预测与分析的有效数据模型
Pub Date : 2016-12-31 DOI: 10.7236/IJASC.2016.5.4.32
Seung Ho Lee, S. Shin
Machine learning is a field of artificial intelligence (AI), and a technology that collects, forecasts, and analyzes securities data is developed upon machine learning. The difference between using machine learning and not using machine learning is that machine learning—seems similar to big data—studies and collects data by itself which big data cannot do. Machine learning can be utilized, for example, to recognize a certain pattern of an object and find a criminal or a vehicle used in a crime. To achieve similar intelligent tasks, data must be more effectively collected than before. In this paper, we propose a method of effectively collecting data. The study suggested web crawling and a tool to do web crawling for securities data extraction. This method develops a mechanism of securities data extraction using a tool, effectively manages individual stock data, and helps an individual investor to make an investment. Big data has been in use very widely, and securities data will be converted into big data and used as widely as big data for data extraction. Investors can create data of wanted items and verify the wanted items using past data. This mechanism enables past data extraction to support a decision making process during an actual trade based on data of proper prices of buy, sell, trading volume, and closing price.
机器学习是人工智能(AI)的一个领域,以机器学习为基础开发了收集、预测、分析证券数据的技术。使用机器学习和不使用机器学习的区别在于,机器学习(看起来类似于大数据)自己研究和收集数据,而大数据无法做到这一点。例如,机器学习可以用来识别物体的特定模式,并找到犯罪分子或犯罪车辆。为了实现类似的智能任务,必须比以前更有效地收集数据。在本文中,我们提出了一种有效收集数据的方法。本研究提出了网络爬虫,并提出了一种用于证券数据提取的网络爬虫工具。该方法开发了一种利用工具提取证券数据的机制,有效地管理个股数据,帮助个人投资者进行投资。大数据已经得到了非常广泛的应用,证券数据将转化为大数据,并与大数据一样广泛地用于数据提取。投资者可以创建所需物品的数据,并使用过去的数据验证所需物品。该机制使过去的数据提取能够在实际交易中支持决策过程,该决策过程基于买入、卖出、交易量和收盘价的适当价格数据。
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引用次数: 0
Listener Auditory Perception Enhancement using Virtual Sound Source Design for 3D Auditory System 三维听觉系统虚拟声源设计增强听者听觉感知
Pub Date : 2016-12-31 DOI: 10.7236/IJASC.2016.5.4.15
Cheolyong Kang, V. Mariappan, Juphil Cho, S. Lee
When a virtual sound source for 3D auditory system is reproduced by a linear loudspeaker array, listeners can perceive not only the direction of the source, but also its distance. Control over perceived distance has often been implemented via the adjustment of various acoustic parameters, such as loudness, spectrum change, and the direct-to-reverberant energy ratio; however, there is a neglected yet powerful cue to the distance of a nearby virtual sound source that can be manipulated for sources that are positioned away from the listener's median plane. This paper address the problem of generating binaural signals for moving sources in closed or in open environments. The proposed perceptual enhancement algorithm composed of three main parts is developed: propagation, reverberation and the effect of the head, torso and pinna. For propagation the effect of attenuation due to distance and molecular air-absorption is considered. Related to the interaction of sounds with the environment, especially in closed environments is reverberation. The effects of the head, torso and pinna on signals that arrive at the listener are also objectives of the consideration. The set of HRTF that have been used to simulate the virtual sound source environment for 3D auditory system. Special attention has been given to the modelling and interpolation of HRTFs for the generation of new transfer functions and definition of trajectories, definition of closed environment, etc. also be considered for their inclusion in the program to achieve realistic binaural renderings. The evaluation is implemented in MATLAB.
当线性扬声器阵列再现三维听觉系统的虚拟声源时,听者不仅可以感知声源的方向,还可以感知声源的距离。对感知距离的控制通常是通过调整各种声学参数来实现的,比如响度、频谱变化和直接与混响的能量比;然而,对于附近的虚拟声源的距离,有一个被忽视但强大的提示,可以对远离听众中间平面的声源进行操纵。本文研究了在封闭或开放环境中产生运动源双耳信号的问题。提出了一种由传播、混响以及头部、躯干和耳廓效应三部分组成的感知增强算法。对于传播,考虑了距离衰减和分子空气吸收的影响。声音与环境的相互作用,特别是在封闭的环境中,是混响。头部、躯干和耳廓对到达听者的信号的影响也是考虑的目标。用于模拟三维听觉系统虚拟声源环境的一组HRTF。特别注意了hrtf的建模和插值,以生成新的传递函数,并考虑了轨迹的定义,封闭环境的定义等,以便将其包含在程序中,以实现逼真的双耳渲染。该算法在MATLAB中实现。
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引用次数: 1
Development of Cultural Contents using Auger Reality Based Markerless Tracking 利用基于俄歇现实的无标记跟踪开发文化内容
Pub Date : 2016-12-31 DOI: 10.7236/IJASC.2016.5.4.57
H. Kang, Dae-Won Park, Sang-Hyun Lee
This paper aims to improve the quality of cultural experience by providing a three - dimensional guide service that enables users to experience themselves without additional guides and cultural commentators using the latest mobile IT technology to enhance understanding of cultural heritage. In this paper, we propose a method of constructing cultural contents based on location information such as user / cultural heritage using markerless tracking based augmented reality and GPS. We use marker detection technology and markerless tracking technology to recognize smart augmented reality object accurately and accurate recognition according to the state of cultural heritage, and also use Android 's Google map to locate the user. The purpose of this paper is to produce content for introducing cultural heritage using GPS and augmented reality based on Android. It can be used in combination with various objects beyond the limitation of existing augmented reality contents.
本文旨在透过提供立体导览服务,让使用者无需额外的导览员和文化解说员,便可亲身体验文化,并利用最新的流动资讯科技,加深对文化遗产的了解,从而提升文化体验的质素。在本文中,我们提出了一种基于用户/文化遗产等位置信息的构建文化内容的方法,该方法使用基于增强现实和GPS的无标记跟踪。我们利用标记检测技术和无标记跟踪技术对智能增强现实对象进行准确识别,并根据文化遗产的状态进行精确识别,同时利用Android的Google地图对用户进行定位。本文的目的是利用GPS和基于Android的增强现实技术制作文化遗产介绍内容。它可以与各种物体结合使用,超越了现有增强现实内容的限制。
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引用次数: 2
期刊
The International Journal of Advanced Smart Convergence
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