节点文献
对2.4Kb/s MELP语音编解码器过渡帧的特殊处理
A special treatment on 2.4 Kbps MELP speech codec’s transition frame
【摘要】 MELP(多带混合激励线性预测)是一种高效实用的语音编解码器.在2.4 Kb/s速率上,语音质量基本达到4.8 Kb/s FS-1016 CELP声码器质量,在抗噪性能方面甚至比CELP还高,接近16 Kb/s SVSD编码器.对2.4 Kb/sMELP编码器帧处理方面做一些改进,将过渡帧划分为2个子帧,分别进行编码和合成,使MELP编码器得到更高的语音质量.
【Abstract】 JP2MELP(mixed-excitation linear predictive) is a high-efficiency speech codec,which is developed on the basis of the LPC codec.At the speed of 2.4 Kb/s,the speech quality of the MELP is approaching that of 4.8Kb/s FS-1016 CELP on which the speed is 4.8 Kb/s,while the noise-resistant ability is higher than that of CELP,approaching 16 Kb/s SVSD codec.To improve the performance of the 2.4Kb/s MELP codec,the transition frame should be cut into two smaller frames,so as to achieve the higher speech quality.
- 【文献出处】 应用科技 ,Applied Science and Technology , 编辑部邮箱 ,2006年06期
- 【分类号】TN912.3
- 【被引频次】4
- 【下载频次】104