With the rapid development of communication, digital signal processing and large-scale integrated circuit technology, people have higher and higher requirements for the quality of voice communication. Echo cancellation technology can effectively solve the echo problem in communication systems such as long-distance telephone networks, 1P phones, hands-free phones and video conferencing, which greatly improves the quality of voice communication and has broad market prospects. This paper mainly studies the acoustic echo cancellation technology used in voice communication systems. According to the specific application and the characteristics of DSP chips, combined with the BEPNLMS algorithm, a software design scheme for echo cancellation based on TMS320VC5402 DSP is given.
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