Direct NO2 photolysis rate monitor von Jackson, J. O., Stedman, D. H., Smith, R. G., Hecker, L. H., Warner, P. O.

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The effect of methoxychlor on periphyton under natural conditions von Meler, P G, Hecker, L H

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Psychoacoustic Speech Tests: A Modified Rhyme Test von House, Arthur S., Williams, Carl, Hecker, Michael H. L., Kryter, Karl D.

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A Study of the Relationship between Consonant-Vowel Ratios and Speaker Intelligibility von Hecker, Michael H. L.

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Speaker Recognition: Basic Considerations and Methodology von Hecker, Michael H. L.

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Descriptions of the Speech of Patients with Cancer of the Vocal Folds. Part I: Measures of Fundamental Frequency von Hecker, Michael H. L., Kreul, E. James

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Articulatory Analog of the Vocal Tract and Nasal Cavities von Hecker, M. H. L.

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Erratum: “Manifestations of Task-Induced Stress in the Acoustic Speech Signal” [J. Acoust. Soc. Amer. 44 , 993–1001 (1968)] von Hecker, Michael H. L.

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Descriptions of the Speech of Patients with Cancer of the Vocal Folds. Part II: Judgments of Age and Voice Quality von Kreul, E. James, Hecker, Michael H. L.

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Fundamental-Frequency Measures and Ratings of the Speech of Patients with Cancer of the Vocal Folds von Hecker, Michael H. L., Kreul, E. James

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Manifestations of task-induced stress in the acoustic speech signal von Hecker, M H, Stevens, K N, von Bismarck, G, Williams, C E

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Studies of Nasal Consonants with an Articulatory Speech Synthesizer von Hecker, Michael H. L.

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Selecting an Intelligibility Test for Communication System Evaluation von Williams, Carl E., Hecker, Michael H. L.

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ARTICULATION-TESTING METHODS: CONSONANTAL DIFFERENTIATION WITH A CLOSED-RESPONSE SET von HOUSE, A S, WILLIAMS, C E, HEKER, M H, KRYTER, K D

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Relation between intelligibility scores for four test methods and three types of speech distortion von Williams, C E, Hecker, M H

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Relation between Intelligibility Scores for Various Test Methods and Different Types of Speech Distortion von Williams, Carl E., Hecker, Michael H. L.

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Diagnostic Articulation Testing in the Design of Speech-Processing Devices von Hecker, Michael H. L., Phyfe, Douglas L.

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Survey of Methods for Measuring Speech Quality von Hecker, Michael H. L, Guttman, Newman

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Speech Intelligibility in the Presence of Time-Varying Aircraft Noise von Williams, C. E., Pearsons, K. S., Hecker, M. H. L.

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Choice of reference conditions for speech preference tests von Hecker, M H, Williams, C E

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