This work provides the theory and basic design tools needed to use speech processing chips effectively in circuit design. Speech processing chips are powerful, specialized integrated circuits used to provide synthesized voice output and/or voice recognition input for many different types of computerized systems. The book presents design examples for a wide range of real-world applications and shows how to interconnect the various components (speech chips, sensors, A/D converters, and speakers) into functional equipment for instrumentation, data processing, and control systems. It also covers a number of the most popular speech synthesis, speech recognition, and digital signal processing (DSP) chips on the market and summarizes the important characteristics of each.