I see a problem recording sound in the Distance activity, but I don't know if it is related. You can see more information in OLPC #10122 http://dev.laptop.org/ticket/10122 The sound was recorded with the internal mic, at the start there are a negative max and a curve before you can get values to process (http://dev.laptop.org/attachment/ticket/10122/Screenshot.png)
Gonzalo On Wed, Nov 24, 2010 at 11:41 AM, Richard A. Smith <rich...@laptop.org> wrote: > On 11/24/2010 06:52 AM, Sascha Silbe wrote: > >> 2. The voltage I see with bias off is probably generated internally by >> the codec chip. I don't think the chip designers envisioned it to be >> used without a decoupling capacitor. I've been told the (non-public) >> data sheet is rather sparse on details about the analog part of the >> chip, so this is a good an understanding as we're going to get. > > The datasheet is sparse yes but we have technical contacts at conexant > who can answer your questions. The DC input mode was part of our early > discussions with them and its supposed to work at least as good as the > last chip did. I specifically remember asking them about this and > telling them it was something to test in our early reviews of the > hardware. It should work. If not then we need to know why so we can > prevent it from happening on the 1.75. > > If you will frame up your questions with good detailed descriptions on > how to duplicate the problems you are having I'll see that it makes it > to conexant for testing and feedback and make sure they have the proper > hardware to test it on. > > -- > Richard A. Smith <rich...@laptop.org> > One Laptop per Child > _______________________________________________ > Devel mailing list > Devel@lists.laptop.org > http://lists.laptop.org/listinfo/devel > _______________________________________________ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel