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双语推荐:高清语音

MT6572平台是由联发科公司推出的双核Cortex-A7主频1.0GHz的智能手机平台。该平台支持AMR-NB和AMR-WB语音编解码,支持双麦克风噪声消除算法等等。文章介绍了MT6572平台的语音性能特点和高清语音的具体要求,并提出了手机实现高清语音的设计要点。
The MT6572 smart phone platform integrates a Dual-core Cortex-A7 operating up to 1.0GHz, which is designed by MediaTek Inc. The platform supports AMR-NB and AMR-WB voice codec, and supports Dual MIC noise cancel ation etc. This article mainly introduces the audio performance and theory of MT6572, the HD-VOICE conception and requirements, and gives some design guideline rules of the HD-VOICE implementation.

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由于护理示教对动作演示画面的连续性和清晰度要求较高,采用H.264视频压缩技术,通过IP网络传输的传统示教系统在多路大规模传输高清视频的时候会造成演示画面不连续并且延时严重,无法满足护理示教演示需求。根据护理示教的单向视频质量要求较高的特点,我们采用非压缩视频技术,光纤加网络双路传输方案:用光纤传输非压缩高清示教视频,通过光纤矩阵切换器调度信号,语音及教室监控视频数据通过IP网络传输,较好地满足了护理实训示教要求,收到较好效果。
Nursing demonstrative teaching has high requirements for continuity and definition of motion demonstration images .Therefore, when H.264 video compression technology is used in the traditional demonstrative teaching through IP network transmission , it causes discontinuity and serious delay of demonstration images in multiple large-scale high-definition (HD) video transmission.So this technology cannot meet the demand of nursing demonstrative teaching .Based on high requirements of nursing demonstrative teaching for one-way video quality , we used the uncompressed video technology and optical fiber-network two-way transmission scheme .The optical fibers transmit uncompressed HD videos; fiber matrix switcher dispatches signals; and IP network transmits speech and classroom monitoring video data .This scheme can better meet the requirements of nursing demonstrative teaching and bring satisfactory results .

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多媒体数控机床实训互动教学系统由高清示教系统、视频监控系统、视频显示系统、语音对讲系统、集中控制系统及课程录播等多个子系统构成,并通过后台软件融合成一个有机的整体。运用该系统可以解决当前高职院校数控技术专业面临的教学方法滞后、实践效果差、安全隐患不断、教师资源不足等诸多问题,探索出一种新的多媒体视频互动系统在数控机床实训中的教学模式。
Multimedia interactive teaching system of numerical control machine tools consisted of high deifnition demonstration teaching system, video monitoring system, video display system, voice intercom system, centralized control system, course recorded and multiple subsystems and formed an organic whole through the background software. The multimedia interactive teaching system solved the current numerical control technology specialty teaching facing many problems such as teaching lag, low practice teaching method effect, safety hidden trouble, insufifciency of teacher resources and many other issues in higher vocational colleges. A new teaching mode was explored.