<p><em><span>科大讯飞</span></em><em><span lang="EN-US">AiPLAY</span></em><em><span>智能演示器使用</span></em><em><span lang="EN-US">Nordic</span></em><em><span>的</span></em><em><span lang="EN-US">nRF52810 SoC</span></em><em><span>实现无线远程控制、记录配音并执行语音命令</span></em></p>
<p><span>挪威奥斯陆</span><span lang="FR"> – 2020</span><span>年</span><span lang="FR">11</span><span>月</span><span lang="FR">23</span><span>日</span><span lang="FR"> –</span><span lang="EN-US">Nordic Semiconductor</span><span>宣布位于合肥的人工智能</span><span lang="EN-US">(AI)</span><span>技术企业科大讯飞</span><span lang="EN-US">(iFLYTEK)</span><span>已经选择</span><span lang="EN-US">Nordic</span><span>的</span><span lang="EN-US">nRF52810</span><span>蓝牙</span><span lang="EN-US">5.2/</span><span>低功耗<span>蓝牙</span></span><span lang="FR">(<em><span>Bluetooth</span></em><span>®</span><span> Low Energy /Bluetooth LE)</span></span><span>多协议芯片级系统</span><span lang="EN-US">(SoC)</span><span>为其</span><span lang="EN-US">“</span><span>科大讯飞</span><span lang="EN-US">AiPlay”</span><span>智能演示工具提供处理能力和无线连接。</span></p>
<p><span>科大讯飞</span><span lang="EN-US">AiPlay</span><span>演示器结合了传统的激光指示器与无线遥控器，并且引入多种智能语音技术，例如语音识别和具有降噪功能的语音记录，旨在增强演示操作的便利性和专业性。</span></p>
<p><span lang="EN-US">Nordic</span><span>的</span><span lang="EN-US">nRF52810 SoC</span><span>使得</span><span>科大讯飞</span><span lang="EN-US">AiPlay</span><span>演示器</span><span>能够以</span><span>低功耗蓝牙无线连接运行演示之</span><span lang="EN-US">PC</span><span>，从而实现远程控制演示文稿，还可以将语音数据中继传输到</span><span lang="EN-US">PC</span><span>进行录制。与红外线</span><span lang="EN-US">(IR)</span><span>遥控器相比，这个无线遥控器具有许多优点，包括</span><span>在</span><span>视线</span><span>以外也可以</span><span>连接、更大范围和双向通信功能。如果</span><span lang="EN-US">PC</span><span>没有内置蓝牙收发器，可将演示器底部槽口</span><span>的</span><span>蓝牙功能</span><span lang="EN-US">USB</span><span>接收端取出，插入</span><span lang="EN-US">PC</span><span>中以</span><span>提供</span><span>蓝牙无线连接。科大讯飞</span><span lang="EN-US">AiPlay</span><span>还具有</span><span lang="EN-US">USB C</span><span>端口，可通过随附</span><span lang="EN-US">USB</span><span>电缆为智能演示器的</span><span lang="EN-US">500mAh</span><span>锂电池充电。</span></p>
<p><span>通过蓝牙无线连接，科大讯飞</span><span lang="EN-US">AiPlay</span><span>演示器还可以将语音记录数据中继传输到在主机</span><span lang="EN-US">PC</span><span>上运行的配套软件</span><span lang="EN-US">“Smart Presentation Manager”</span><span>。该软件可将演示文稿配音与相关幻灯片制作为声音和文本文件，以便在演示后存档和共享。</span></p>
<p><span>除了提供蓝牙无线连接外，</span><span lang="EN-US">Nordic</span><span>的</span><span lang="EN-US">nRF52810 SoC</span><span>的</span><span lang="EN-US">64MHz</span><span>、</span><span lang="EN-US">32</span><span>位</span><span lang="EN-US">Arm®Cortex®M4</span><span>处理器具有</span><span lang="EN-US">192kB</span><span>闪存和</span><span lang="EN-US">24kB RAM</span><span>，可以满足科大讯飞</span><span lang="EN-US">AiPlay</span><span>演示器的所有计算需求，包括语音处理、环境背景噪声过滤，以及识别和执行语音命令。</span><span lang="EN-US">nRF52810 SoC</span><span>将</span><span lang="EN-US">Arm</span><span>处理器与</span><span lang="EN-US">2.4GHz</span><span>多协议无线电</span><span lang="EN-US">(</span><span>支持蓝牙</span><span lang="EN-US">5.2</span><span>、</span><span lang="EN-US">ANT™</span><span>和专有</span><span lang="EN-US">2.4GHz RF</span><span>协议软件</span><span lang="EN-US">)</span><span>结合在一起，并且经过精心设计，最大限度地降低功耗以延长电池使用寿命。</span></p>
<p><span lang="EN-US">nRF52810 SoC</span><span>随附的</span><span lang="EN-US">Nordic S112 SoftDevice</span><span>是符合蓝牙</span><span lang="EN-US">5</span><span>标准的</span><span lang="EN-US">RF</span><span>协议软件</span><span lang="EN-US">“</span><span>堆栈</span><span lang="EN-US">”</span><span>。</span><span lang="EN-US">Nordic</span><span>的软件架构可确保这个堆栈和科大讯飞的应用程序代码之间具有清晰分隔，保障</span><span lang="EN-US">RF</span><span>协议在智能演示器应用程序代码进行编译、测试和验证期间不会遭受损坏，从而简化了开发工作。</span></p>
<p><span>科大讯飞读写部员工夏安邦表示：</span><span lang="EN-US">“</span><span>我们决定使用</span><span lang="EN-US">nRF52810 SoC</span><span>的原因包括其尺寸、价格和</span><span lang="EN-US">CPU</span><span>性能。此外，我们还获得了很好的技术支持。例如，在科大讯飞</span><span lang="EN-US">AiPlay</span><span>演示器的研发阶段，我们遇到了某些音频传输帧丢失的问题，</span><span lang="EN-US">Nordic</span><span>为我们提供了蓝牙</span><span lang="EN-US">SoC</span><span>传输方法建议，解决了这个难题。</span><span lang="EN-US">”</span></p>
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