TASI (Time Assignment Speech Interpolation) has been in service on transatlantic submarine cable channels since mid‐1960. Measurement of service quality on one TASI system (White Plains‐London) indicates that system performance equals or exceeds the original engineering objectives in all but a few cases. Field modifications now being made should bring these exceptions into closer agreement with objectives.
A companion paper4 discusses in detail the design considerations for TASI speech detectors and describes subjective tests made to determine the maximum permissible loading of TASI circuits without impairment of service.
is a professor of Electrical and Computer Engineering with research interest in biomedical signal processing. He teaches courses in digital systems, signals and systems, communications and biomedical signal processing.
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