与但丁一起教学

A 学校常用的流媒体技术, 会议中心, 和礼拜堂是但丁(通过以太网的数字音频网络). 但丁是澳大利亚Audinate公司的作品, which develops products and licenses the technology to hundreds of audio device manufacturers around the world. A Dante-enabled device can be plugged into a Dante network using a standard Category 5e or Category 6 network cable; the network connects devices using either 100Mbps or gigabit network switches, 通常具有以太网供电(PoE)功能.

Dante设备在它们所连接的虚拟局域网上自动发现. 如果网络提供了DHCP服务器，那么Dante就是即插即用的. 一旦设备连接到网络, it can transmit and receive up to 64 channels of digital audio at extremely low latency: 150 microseconds for hardware devices and as low as 1 ms for software. 因为Dante网络通常是用提供PoE的交换机设计的, 只有一条便宜的电缆可以运行. The network can run on a general-purpose computer network (consuming up to 100Mbps if all 64 bidirectional channels are in use) or on dedicated cables and switches.

A traditional Dante setup for a classroom or conference space would involve at least three Dante devices: a microphone receiver, a rackmounted Audio Matrix Processor for providing digital signal processing of the audio channels, 还有一个分配放大器. A good example of a microphone receiver would be one from the Shure Microflex line. 这些无线接收器为两个人供电并传输数据, 四个, 或通过一根以太网电缆连接8个无线麦克风. A rackmounted DSP unit would also plug into the network over a single Ethernet cable (or often two for redundancy). A distribution amp would either connect directly to the DSP unit with analog audio cables or to the Dante network if using a Dante-enabled speaker or line array, 把音频发送给房间里的公众演讲者.

让一切顺利进行, you would connect a computer to the network and use the free Dante Controller software to route the virtual microphone output channels from the wireless microphone receiver (audio Sources or Transmitters in Dante terminology) to virtual channel inputs (called Destinations or Recei­vers) on the DSP unit. 用于教室或会议空间, multiple microphones might be used: one lavaliere microphone worn by the teacher or presenter and handheld or boundary microphones for audience interaction. The matrix processor would optimally be programmed to apply noise gates to all of the microphones to avoid picking up stray, non-speech sounds and would privilege the teacher’s microphone channel by ducking the audience microphones whenever the teacher is speaking. Dante-enabled wall panels and touchscreens are available to easily switch among different audio channel routing schemes.

在一个混合的世界, you would want to route audio to and from Dante-enabled devices and into your videoconferencing software of choice. 有两种方法可以做到这一点. One would be to use Audinate’s inexpensive AVIO line of adapters or similar devices for connecting non-Dante audio equipment to your network. 一些AVIO适配器由XLR连接器组成, 高质量和快速的a /D转换器, 和但丁接口连接到网络.

在我们的例子中, we would want the USB AVIO adapters that add a Dante-enabled sound card to your computer—exposing a virtual microphone to send microphone audio to the remote audience and a virtual speaker output to send the remote audience’s audio to the room’s speakers. 而不是使用硬件, another way to connect a computer to a Dante network is with Audinate’s software (perhaps auto-ducked like an audience room mic or privileged, 取决于远程方的角色). 一种选择是Dante虚拟声卡. This product creates an audio device with up to 64 channels in/64 channels out that connects to a Dante network over your Ethernet adapter and that applications on your computer can interface with.

另一个Audinate软件解决方案是Dante Via, 这是流行的捐赠器VB-CABLE的一个奇特的替代品, which can expose up to 16 applications or devices (like microphones or speakers) on your computer to Dante audio channels on the network, 再次使用计算机现有的网络适配器. 但丁Via和但丁虚拟声卡可以以70美元的价格购买.

Audinate的一项新创新是Dante AV, 这暴露了12个双向音频通道和一个视频通道进出. Dante AV is set to compete with established low-latency video-over-IP solutions like NDI and can potentially do so very effectively if many of Audinate’s hardware licensees are on board.