adaptive forward scalar quantization

The MST717 is a highquality ASIC for NTSC / P AL car TV application. It receives analog NTSC / P AL CVBS and S-V ideo inputs from TV tuners, DVD or VCR sources, including weak and distorted signals, as well as analog RGB input from GPS systems.

With the widespread use of technologies like digital television, internet streaming video and DVD video, video compression has become an inevitable component of broadcast and entertainment media. Currently, the video codec that achieves the h

文基于LPC的自适应前后向量化技术,提出了一种可变速率的混合激励线性预测MELP语音编码算法.该算法中,采用当前语音帧(前向LPC)或前面某帧已合成语音帧(后向LPC)进行线性预测,当采用后向LPC时,只需传输时间序列编码,故减少了LPC系数的平均编码比特.计算机模拟表明,该算法与标准MELP算法合成的语音质量相当,但显著减少了LPC的传输带宽,从而明显降低了MELP平均编码速率.-VARIABLE-RATE MELP SPEECH CODER BASED ON ADAPTIVE FORWARD