On pe, 2007-02-02 at 11:37 -0500, ROB wrote: > 1kb/s isn't going to get you too much audio. Try encoding an mp3 at > 1kb/s to see how audible that would be. I think you'd be looking at > something more along the lines of 32-64kb/s to get anything that you > could understand.
mp3 isn't designed for that, though even speex's minimum is 2kb/s (probably you want to use more). Anyway, Robert was talking about 1kB/s, which is quite fine already. But the main point that GPRS is not for VOIP really stands; short voice messages, sure, an ongoing dialogue, no. Of course, you can make a GSM data call (I presume) and thus reserve bandwidth from the network; some latency issues would remain, but you could probably get a reasonable VOIP connection going on that with low-bandwidth Speex; would likely cost you but perhaps be an affordable option for intl. calls. (Also, _this_ is how you can accomplish a proper encrypted phone call using the GSM network with Neo, if you're into security and don't mind it costing a bit. Doubleplusgood if you can make a data call from cell to cell direct without both sides having to initiate their own data calls; not sure about that, GPRS suffices for my uses so haven't looked at data call capabilities.) -- Mikko J Rauhala <[EMAIL PROTECTED]> University of Helsinki _______________________________________________ OpenMoko community mailing list community@lists.openmoko.org https://lists.openmoko.org/mailman/listinfo/community