"Noise(Sound)" . . "Speech compression." . . "Noise analyzers." . . "NAVAL RESEARCH LAB WASHINGTON DC." . . "Excitation." . . "Auditory perception." . . "Real time." . . "Human Factors Engineering & Man Machine System." . . "Predictions." . . "Logic." . . "Voice communications." . . "Voice Communications." . "Pitch discrimination." . . "Residuals." . . "Sound reproduction systems." . . "Noise reduction." . . "Cybernetics." . . . . "Audio frequency." . . "Synchronism." . . "Speech transmission." . . . . . . . . . . . . . . . . . . . "We developed an approach to abridging the short-term LPC residual and used the abridged information to generate speech at 9.6 to 16 kilobits per second (kb/s). This is an alternative to the baseband residual-excited coder now being used in NRL's Multirate Processor (MRP). The abridgment logic requires less than one multiply per input sample, is independent of voiced/unvoiced decisions, restricts the influence of errors to a single frame, strongly resists brief input anomalies, and provides anchor periods of excellent speech reproduction once per frame. This approach appears promising for practical application in real-time systems where simplicity, stability, and quality are important. It scores somewhat lower overall on the Diagnostic Rhyme Test than the more complicated MRP approach. (Author)."@en . . . . . "On Pitch-Synchronous Abridgment of the Linear Prediction Residual"@en . . . . . . "Quantization." . . "Acoustic filters." . .