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AMBE 2000 control system and control method

A control system and decoder technology, applied in speech analysis, instruments, etc., can solve the problems of complex timing control, and achieve the effect of simplifying timing control and the method is simple and convenient

Active Publication Date: 2014-02-12
SHANGHAI SPACEFLIGHT INST OF TT&C & TELECOMM
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  • Abstract
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Problems solved by technology

[0005] However, using the AMBE2000 chip to implement the AMBE algorithm has the disadvantage of complex timing control, which limits its promotion to a certain extent.

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  • AMBE 2000 control system and control method
  • AMBE 2000 control system and control method

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Embodiment Construction

[0043] The AMBE2000 control system and control method proposed by the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. Advantages and features of the present invention will be apparent from the following description and claims. It should be noted that all the drawings are in very simplified form and use imprecise ratios, which are only used for the purpose of conveniently and clearly assisting in describing the embodiments of the present invention.

[0044] The core idea of ​​the present invention is to provide a kind of AMBE2000 control system, including analog / digital converter, AMBE2000 encoder, FPGA, AMBE2000 decoder and digital / analog converter, in the decoding process, FPGA realizes chip by software programming Multiplexing of data pins, receiving configuration signals during configuration, and receiving normal decoded data (channel code stream) after configuration, which greatly simplifie...

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Abstract

The invention discloses an AMBE 2000 control system. The AMBE 2000 control system comprises an analog-digital converter, an AMBE 2000 coder, an FPGA, an AMBE 2000 decoder and a digital-analog converter. In the process of decoding, the FPGA is used for achieving reuse of data pins of a chip through software programming, configuration signals are received in the process of configuration, normal decoding data (channel code streams) are received after configuration, and therefore sequential control of an AMBE 2000 is simplified greatly; meanwhile, the invention further discloses an AMBE 2000 control method used for carrying out processing on configuration clocks and data to judge whether configuration is completed or not, and therefore chip pins can be switched. The method is simple and convenient to use.

Description

[0001] technical field [0002] The invention relates to the technical field of speech compression algorithms, in particular to an AMBE2000 control system and a control method. Background technique [0003] In the mid-1980s, Lincoln Laboratory of the United States proposed a multi-band excitation (MBE) speech coding scheme. This algorithm breaks through the limitation of binary excitation, divides the speech spectrum into several sub-bands according to the fundamental harmonic frequency, and judges whether the signal of each sub-band is voiced or unvoiced (V / U judgment), so as to decide which excitation source to use A composite signal for the subbands is generated, and the composite signals for the individual subbands are summed to generate a full-band composite speech signal. Using this method, it is possible to synthesize speech of much better quality than conventional vocoders at low rates. [0004] DVSI developed the Advanced Multi-Band Excited (AMBE) algorithm based...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G10L19/08
Inventor 邵莹石云墀陈蔚涵黄建青
Owner SHANGHAI SPACEFLIGHT INST OF TT&C & TELECOMM
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