Time domain voicing cutoff (TDVC): a high quality, low complexity 1.3-2.0 kb/sec vocoder
Richard L. Zinser, M.L. Grabb, S.R. Koch, G.W. Brooksby · 2002
This paper describes a family of low rate, low complexity speech coding algorithms known as time domain voicing cutoff (TDVC). TDVC is a predictive coding algorithm that employs a single transition frequency dividing voiced and unvoiced excitation. It provides the voicing flexibility of a frequency domain algorithm with lower complexity and rate overhead. TDVC has been previously subjected to a DAM test and received scores of 63.4 and 60.1 at 2.0 and 1.5 kb/sec, respectively.