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Comparison of parametric representations for monosyllabic word recognition in continuously spoken sentences

1980/08/01 by S. Davis, P. Mermelstein · 5,365 citations
Computer Science · Mathematics · #Artificial intelligence #Cepstrum #Computer science #Dynamic time warping #Feature extraction #Linear prediction #Linguistics #Mathematics #Mel-frequency cepstrum #Music and Audio Processing #Parametric statistics #Pattern recognition (psychology) #Set (abstract data type) #Speech Recognition and Synthesis #Speech recognition #Statistics #Syllable #Time Series Analysis and Forecasting #Word (group theory) #Word recognition

paper · doi:10.1109/tassp.1980.1163420

published in IEEE Transactions on Acoustics Speech and Signal Processing 28(4), 357-366 (Institute of Electrical and Electronics Engineers)

openalex publication_date 1980/08/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/02

Abstract

Several parametric representations of the acoustic signal were compared with regard to word recognition performance in a syllable-oriented continuous speech recognition system. The vocabulary included many phonetically similar monosyllabic words, therefore the emphasis was on the ability to retain phonetically significant acoustic information in the face of syntactic and duration variations. For each parameter set (based on a mel-frequency cepstrum, a linear frequency cepstrum, a linear prediction cepstrum, a linear prediction spectrum, or a set of reflection coefficients), word templates were generated using an efficient dynamic warping method, and test data were time registered with the templates. A set of ten mel-frequency cepstrum coefficients computed every 6.4 ms resulted in the best performance, namely 96.5 percent and 95.0 percent recognition with each of two speakers. The superior performance of the mel-frequency cepstrum coefficients may be attributed to the fact that they better represent the perceptually relevant aspects of the short-term speech spectrum.

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