Speech recognition IC (Integrated Circuit) is an integrated circuit that integrates speech recognition functions. It analyzes the sound signal and converts it into text output. Speech recognition IC usually includes analog digital converter (ADC), digital signal processor (DSP) and other components, which can realize voice instruction recognition, voice translation and other functions. The word number (also called word capacity) of these ICs refers to the capacity of their internal memory, which is used to store speech recognition models, algorithms and temporary data. The number of words in different models of speech recognition IC may vary, usually depending on the needs of the product. Speech recognition IC is widely used in various fields. The following is a detailed introduction to its functions and applications:
1. Function:
▲ Voice signal acquisition: The voice recognition IC can collect the surrounding voice signals through the built-in microphone or external microphone and convert them into analog electrical signals.
▲ Analog to digital conversion (A/D conversion): The collected analog voice signal needs to be converted into a digital signal for subsequent processing through A/D conversion.
▲ Digital signal processing: For digital speech signals, the speech recognition IC will process them through built-in algorithms, such as noise removal, speech segmentation, feature extraction, etc.
▲ Speech recognition: Based on the processed speech signal, the speech recognition IC can recognize the text information in the speech and realize the conversion from speech to text.
▲ Control interface: Speech recognition IC also usually has various control interfaces, such as SPI, I2C, DAC08CP, etc., to facilitate communication and control with other hardware devices.
2. Application:
▲ Voice assistant: Voice assistant such as Siri, Xiao Ai and others widely use voice recognition IC, which can recognize users' voice commands and make corresponding responses.
▲ Writing assistant: Speech recognition IC can be used to convert dictation text content into text documents to improve writing efficiency.
▲ Voice control: In the fields of smart home and smart car, voice recognition IC can realize the function of voice control equipment.
▲ Voice search: In various applications, users can realize voice search function through voice recognition IC to improve user experience.
▲ Speech translation: Some speech recognition ICs support the recognition of multiple languages and can be used for real-time speech translation and other scenarios.
In general, the rapid development of speech recognition technology, especially the application of speech recognition IC, is constantly changing our way of life. From simple command recognition to complex natural language processing, speech recognition IC makes human-computer interaction more natural and convenient, and promotes the wide application of intelligent technology. With the further development of technology, the performance of speech recognition IC will become more powerful and its application scope will be further expanded, bringing more convenience and innovation to human society.
