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Research of AVS-M Audio Codec and Implementation on DSP

Author: KongFanWen
Tutor: LiuKaiHua
School: Tianjin University
Course: Communication and Information System
Keywords: Digital audio AMR-WB AVS-M audio TMS320C6713
CLC: TN912.3
Type: Master's thesis
Year: 2007
Downloads: 83
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Abstract


At present , China has been in the field of audio electronics consumer products have a strong industrial base , but not grasp the core patented technology , long-term businesses and organizations subject to foreign holders of the standards , patents and technology patent disputes many enterprises universal problem , greatly restricting their development. Therefore, the development of relevant standards with independent intellectual property rights has become more necessary and urgent . AVS-M audio is our own intellectual property being developed audio compression and transmission standard , which draws on the basic framework of 3GPP audio standard AMR-WB , designed to provide audio codecs for the rapid development of wireless networks and mobile phones and other mobile devices norms and standards , system , copyright protection and file format . The success of the standard formulation will solve the thorny problem of the audio industry in China face high patent fees , and provide a wider space for the development of audio electronic consumer products industry in China . This study is the AVS-M audio codec algorithm , AVS-M audio decoder and TMS320C6713 development board . The topics first study the basic technology of the AMR-WB framework and core algorithm module , and this on the basis of a detailed analysis of the key technologies of the AVS-M audio . The VC platform debugging AVS-M audio reference code ( an updated version of April 11, 2007 ) , and decoder transplantation to CCS simulation platform . After optimization of the storage overhead and execution efficiency , and ultimately C6713 development board per second decode 8 to 9 super frame stereo signal (48kHz sampling ) . The subjective and objective test AVS -M audio algorithm equivalent to the performance of the AMR-WB . The study of the subject has a certain significance after the promotion and application of AVS-M audio standard .

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CLC: > Industrial Technology > Radio electronics, telecommunications technology > Communicate > Electro-acoustic technology and speech signal processing > Speech Signal Processing
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