From: Craig H. <cr...@gu...> - 2007-04-10 20:55:20
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On Apr 10, 2007, at 6:39 AM, Alexandre Pereira Nunes wrote: > Now let me ask another question: someone asked about audio interfacing > to the phone module. I think that's a must, or at least, a big plus. > What say you? Take a look at the schematics in pubs.gumstix.com -- the audio is hooked up so as to enable all the following use cases: 1. gumstix is an MP3 player -- ie CPU generates "audio" which gets played to headphones via AC97 to UCB1400 2. gumstix is a phone -- ie person talks in MIC and listens on headphones/speakers while on a GSM voice call 3. gumstix CPU interacts with GSM audio -- eg "hold music" or on- phone voicemail, or remote speech-to-text command interface 4. BT gumstix can relay audio for phone calls or MP3 or anything else Basically, all audio passes through the CPU -- this is not great from a power consumption point of view, but it makes things very flexible from a "how can you route this stuff" point of view. C |