Edward Masters

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Voice production models are used for speech compression thus reducing the encoding data rates and storage space for speech signaling processing. The legacy voice production model consists of a vocal source model and a vocal tract model. This paper presents a simpler voice production model adapted to waveform coding of speech: the Mathieu Waveform Coder(More)
Waveshaping of data bits is used in many digital modulation techniques to control transmission bandwidth. For 99% power-in-channel bandwidth, minimum shift keying (MSK) achieves a channel bandwidth utilization of approximately 1.2 Hz/BPS. While transmitting a message at R/sub b/ bits per second, MSK produces a constant-envelope, continuous-phase, FSK(More)
Sinusoidal frequency modulation yields orthogonal spectral lines from which orthogonal spectral pairs can be formulated. The orthogonal spectral pairs can be utilized as in-phase ('I') and quadrature phase ('Q') signaling waveforms for use in data transmission. This paper describes the origins of these signaling waveforms and the delayed-orthogonal(More)
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