Real-time speech recognition system application circuit diagram in home monitoring robot

The functions studied and designed in the circuit diagram are all applied to mobile robots . Therefore, the research and design of the system needs to take into account the characteristics of small size, power saving, easy mobility, and a friendly display interface that is convenient for home users to operate. For the speech recognition part, a processor, a speech collection circuit and a speech output circuit for speech recognition algorithm processing are required. The processor for speech recognition algorithm calculation is mainly responsible for the calculation and processing of the algorithm, which is equivalent to the brain of the robot; the speech acquisition circuit is responsible for collecting external sound signals, equivalent to the robot's ears; the speech output circuit is responsible for outputting speech sounds, equivalent to the mouth of the robot .

This circuit diagram is designed to be used on mobile robots, so it requires voice input, recognition processing and voice output functions. For voice input collection, this article uses a sound sensor microphone and peripheral circuits to achieve it. For the voice output part, a power amplifier is used in combination with a speaker. The schematic diagram of the voice part of the design is shown below.