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| Implementation of the 800/920/1200bps Modified Multi-band Excitation Speech Coder Based on DSP Processor |
| Wang Du-sheng |
| Institute of Electromechanical & Control Engineering, Dalian Nationalities University, Dalian 116600, China |
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Abstract An 800/920/1200bps modified speech coder based on the Multi-Band Excitation (MBE) speech model is presented. The two stage discrete cosine transformation coding scheme has been used to quantize the spectral magnitude parameters changing frame-by-frame adaptively in the speech coder. The coded bit rate of speech is largely reduced and that make it possible the implementation of 800~1200bps MBE speech coder. This paper focuses on the design of two stage discrete cosine transformation coding scheme and hardware implementation based on DSP processor.
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Received: 08 October 2005
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2007, Vol. 29 
