Design of portable voice digitization and network transmission system

Abstract

Abstract: In order to realize high-precision recognition rate of digital voice and high-speed transmission of digital code, a portable voice digital network transmission system is designed, integrating the sound card chip WM8978 and Ethernet chip W5500. STM32F4 series high-speed processor is used as the MCU to conduct high fidelity digital voice coding and transmission via Internet. Test result shows that through inverse synthesis the network transmissing data of digitalized voice keeps consistent with the original speech signal, the proposed system the speed and accuracy of voice digitzation and network transmission.

Key words: voice digitization, network transmission, reverse synthesis

CLC Number:

TP391.4

NIU Yonggang. Design of portable voice digitization and network transmission system[J]. Journal of Civil Aviation University of China, 2020, 38(5): 50-54.

References 13

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