Nintendo DS Sees Voice-Chat, Demo Stations
An anonymous reader writes "According to Reggie Fils-Aime, Nintendo of America's executive vice president of sales and marketing, Metroid Prime will include the ability to voice chat with other players before and after games (not during). Granted, the PSP's version of SOCOM allows for in-game chat, but this certainly is the first step." They're also going to be setting up demo download stations in retail stores, as reported in a DS Fanboy post. More details also available at the Game|Life Blog.
Probably because audio data needs to be compressed before sending it, which requires CPU time, even for basic audio compression algorithms. The DS may have two processors, but neither is that fast, and I bet that even basic compression would use up significant CPU time.
Sure, I bet they're recording in mono 8-bit at 22kHz, so the datarate is only 22kB/s, but with a couple of people that could saturate the uplink of many home broadband connections even without the gameplay traffic. Zap in some simple voice compression and you've got a ~4kB/s data stream, much more convenient.