Hurra Richard! ;) On Tue, 12 Dec 2006, Richard Franks wrote:
> Hurrah Robert! ;) > I'm not an audio engineerologist, however a quick read of the > datasheet shows input/output rates of up to 96kHz.. so the theoretical > highest frequency at that level would be 48kHz.. meaning there may be > room in the non-audible spectrum for comms depending upon the > sensitivity of the mic/speaker components. :)) Doing distance messuring with ultrasonic? ;)) 40kHz example: http://www.parallax.com/dl/docs/prod/audiovis/Distance28015.pdf > Is anyone else excited about having a 96Khz ADC with programmatic > access in their pocket? > I'm still a bit fuzzy regarding whether there is a physical wire > connecting the microphone to the GSM (has its own ADC?), or whether > the 2401 provides the GSM with the converted digtal stream? Line-In1 Line-In2 have a connection to the out, but could be connected to the ADC and it seems that the WM8753 have a enconder "Voice codec" so without SoC power the GSM audio could be compressed. But a RAW un-decoded GSM audio output via serial IO would be better, then could the Neo1973 do high quality audio stereo recording while an incoming call is answered by asterisk/answering machine. Sean? ;) Cheers, and happy hacking, rob _______________________________________________ OpenMoko community mailing list [email protected] http://lists.openmoko.org/mailman/listinfo/community
