Apparently, the "Symphony" project got derailed after Motorola spun off their semiconductor business to Freescale. I tried searching for the data sheets for the Symphony receiver chips, but didn't get too far.
At least NXP (formely Philips Semiconductor) is still pursuing this technology and I wish them the best.
At least NXP (formely Philips Semiconductor) is still pursuing this technology and I wish them the best.