A silicon-on-silicon MCM for voice recognition/telephone answering device

We have built and demonstrated a silicon-on-silicon multichip module for use in a cellular telephone. This module performs speaker-dependent voice recognition and also serves as a telephone answering device. It takes advantage of the miniaturization possible with MCM technology. Other important factors in the use of this approach are the fast design and fabrication cycle and the ability to readily integrate specialized CMOS processes into a single package.