What Audio I/O Does VelocityHD Support?
Each VelocityHD SDI input (one) and output (two) supports two groups (eight mono channels) of embedded audio. The SDI audio de-embedder supports both synchronous and asynchronous audio input streams. Two groups (eight mono channels) are embedded into each SD/HD SDI video output at a fixed sample rate of 48kHz and locked to video. 16 and 20-bit audio are supported in SD, while 16, 20 and 24-bit audio word widths are supported for HD-SDI (this applies to both embedding and de-embedding). VelocityHD features two unbalanced (BNC, 75 ohm) AES inputs (four mono channels) and four unbalanced AES outputs (eight mono channels), and supports both synchronous and asynchronous audio input streams. 32kHz, 44.1kHz, 48kHz and 96kHz inputs are supported, with output fixed to 48KHz at 16, 20, or 24-bit word resolution. The four AES outputs can be flexibly routed, enabling two AES for each of program and preview outputs, simultaneous 5.1 and stereo output, or other combinations. Unbalanced stereo analog
