Universal tree encoding for speech
Yasuo Matsuyama, Robert M. Gray · IEEE Transactions on Information Theory · 1981
A low-rate (about one bit per sample) waveform coder for speech compression is designed using techniques from universal source coding, fake process tree encoding, and linear predictive coding (LPC). The system does not require on-line adaptation or LPC analysis, yet it yields a fidelity that compares well with the best existing adaptive-waveform coder of the same rate.