如何利用电教技术上诗词鉴赏课

目前利用电教技术进行教学活动是课程改革的一个重要方面,作者从传统诗词鉴赏的教学工作出发,尝试探讨了以电教技术为平台改革诗词鉴赏教学工作的方式。并举例说明了有关过程。     

声卡频响的常规仪器测定

本文介绍采用传统的数量仪器结合计算机机音频编辑软件对声卡频率特性进行测定。     

Self-regulation of learning and preference for written versus audio-recorded feedback by distance education students

Teacher feedback is critically related to student learning. This study sought to determine the relationships between distance education (DE) student level of self-regulated learning (SRL) and their preference for audio-recorded vs. written feedback from tutors. DE students (n = 102) enrolled in a first-year university course completed an online questionnaire that assessed eight dimensions of SRL as well as a personal evaluation of written vs. audio-recorded tutor feedback that was provided during the academic study period. In general, the participating DE students expressed preference for written over audio-recorded feedback. However, complex patterns of relationships emerged between dimensions of SRL and evaluation of written vs. audio-recorded feedback. For example, DE students who were most likely to listen to audio-recorded feedback appreciated peer interaction and personal challenges more than students who preferred written feedback. In DE learning environments, a variety of feedback formats may best meet the needs of all students, although exposure to various technologies may facilitate SRL.     

基于四层B/S模式的构件式视音资源管理系统的设计与实现

通过B/S 模式、构件技术以及流媒体技术等当前主流技术, 开发了一种基于SAN 架构、四层B/S 模式的构件式视音资源管理系统, 实现馆藏视频音频资源的数字化。     

音频资料元数据规范与FRBR的应用*

制定音频资料元数据规范需要正确界定著录对象，确定它们之间的关系，同时根据著录对象的特征及其被用户利用的特点，明确元数据的构成元素。FRBR提出的文献信息资源的实体层次有助于根据资源的特征与用户需求，选择适当的描述层次，确定相应的元素构成。FRBR模型的立体架构也为构建元数据提供了新的思路。     

Investigating expectations and experiences of audio and written assignment feedback in first-year undergraduate students

Previous research suggests that audio feedback may be an important mechanism for facilitating effective and timely assignment feedback. The present study examined expectations and experiences of audio and written feedback provided through turnitin for iPad^® from students within the same cohort and assignment. The results showed that although initially sceptical of audio compared to written feedback, there were no significant differences in students' experiences of audio and written feedback. Students' performance on the assignment was not associated with their experiences of audio feedback but first-class performing students (?>?70%) had more positive experiences of written feedback than those who received an upper second-class grade (60–69%). In general, the results imply that audio feedback provided through turnitin for iPad^® is a viable alternative to written feedback. The findings are discussed in relation to past research findings.     

一种基于音频的小波变换域水印算法

本文基于人类听觉系统(HAS)特性,提出了一种在音频数字信号中嵌入音频水印的小波变换域水印算法,对音频这种多媒体数字作品进行了数字水印的嵌入、检测和提取的研究。将音频水印嵌入到小波变换不同方位的重要系数当中,使变换后的水印和音频小波系数更好地融合,使水印不可感知。实验结果表明,利用该方法嵌入的音频水印对大多数信号处理具有较好的鲁棒性和不可感知性。     

音响档案抢救与保护的研究

音响档案随着保存时间的延长而逐步毁损,我国部分音响档案处于濒危状态,急需建立科学的保护方法,实施抢救措施。本文针对我国音响档案保存现状,分析其在保存中出现的普遍问题,借鉴国内外音响遗产抢救保护活动的经验,提出抢救及保护措施。音响档案载体与信息的抢救、保护及恢复是保存音响档案原始性的方法,而数字化是长期保存信息、方便利用的有效途径。     

虚拟音频频谱分析

本文讨论的内容是如何使用MATLAB对模拟信号进行测量的问题。文中使用MATLAB数据采集工具箱来采集音频信号,并且对所采集的音频信号进行频谱分析,最后将分析的结果显示在电脑窗口上。文章主要介绍了音频信号分析的步骤,对音频信号进行分析的程序等。     

现代通信中的音频数字处理

当今社会已进入了信息化新时代 ,一个多科学交叉 ,跨行业的新兴的多媒体通信技术已经形成 .现代通信正朝着多维空间 ,多种媒体组合的通信方向迈进 ,因而各种信息处理技术显得尤为重要了