What is speech recognition? What are voice recognition chips?

Speech recognition is a computer technology that converts human speech into a form of text that computers can process. At present, speech recognition has become a common technology application, including smart home, telephone automation, translation, voice assistant and other voice interaction systems. Speech recognition chip is one of the core components of speech recognition technology, it can help the computer to process the speech signal faster, and improve the accuracy of speech recognition.

I. Overview of speech recognition technology

Speech recognition technology analyzes the speech signal, recognizes the speech features in the speech signal, and converts them into text form. Specifically, speech recognition technology includes the following steps:

Speech signal processing: the speech signal collected by the microphone is pre-processed, including denoising, fluctuation processing, etc.

Speech signal feature extraction: Feature extraction of pre-processed speech signals, including time domain features, frequency domain features, neural features, etc.

Model training: The extracted feature data is used to train speech recognition models, including rule-based models and statistical model-based models.

Speech recognition: The trained model is used to recognize the input speech signal, and the recognition result is converted into text form.

II, Voice recognition chip

Speech recognition chip is one of the core components of speech recognition technology. It can help computers process speech signals faster and improve the accuracy of speech recognition. At present, there are two main types of voice recognition chips on the market:

CPU based speech recognition chip

Cpu-based speech recognition chips usually use high-performance cpus (such as Intel X86 architecture cpus) to implement speech recognition functions. Their advantages are strong computing power and fast processing speed, but their disadvantages are large volume and high power consumption.

Gpu-based speech recognition chip

The speech recognition chip based on the Graphics Processing Unit (GPU) uses the powerful computing power of the GPU to realize the speech recognition function. They have the advantage of smaller size and lower power consumption, but the disadvantage is that the computing power is weak relative to the CPU.

In summary, the speech recognition chip has a high degree of flexibility and customizability, and can be applied to a variety of different scenarios to achieve natural communication of human-computer speech interaction. At present, there are mainly CPU-based and GPU-based voice recognition chips on the market, their advantages and disadvantages are different, you can choose the right chip according to specific needs.