The hardware is doubletalk rc8660 There is info on the rcsys site http://www.rcsys.com/ It could be done in software, but I have worked with this hardware and am pleased with the sound. Also, I want to keep the processor free of using many cycles for speech synth, this is not a PC and it will operate at 180Mhz top speed. It will add to the cost but I think it is worth the trade-off. Software is linux cross development toolchain, the entire toolchain is already done and avail on processor manufacturers web site, along with buildroot for flash file system, u-boot bootloader etc. C, C++, assembly, all of the traditional tools will be avail. Processor for first version is AT91RM9200. Later version will move towards EP9315 to take advantage of PCMCIA (will map that to CF format for wifi modem) and IDE (will be set up to support toshiba 1.8" hard drives, same as in iPod. -- Doug
