A Mixed-Split Scheme for 2-D DPCM Based LSF Quantization
Saikat Chatterjee, T.V. Sreenivas · 2005
In this paper a mixed-split scheme is proposed in the context of 2D DPCM based LSF quantization scheme employing split vector product VQ mechanism. Experimental evaluation shows that the new scheme is successfully being able to show better distortion performance than existing safety-net scheme for noisy channel even at considerably lower search complexity, by efficiently exploiting LSF trajectory behavior across the consecutive speech frames.