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  • 1
    Online Resource
    Online Resource
    Acoustic Characteristics of Speech Produced Without Oral Sensation
    American Speech Language Hearing Association ; 1973
    In:  Journal of Speech and Hearing Research Vol. 16, No. 1 ( 1973-03), p. 67-77
    Details
    In: Journal of Speech and Hearing Research, American Speech Language Hearing Association, Vol. 16, No. 1 ( 1973-03), p. 67-77
    Abstract: The acoustic characteristics of continuous speech produced by an adult male talker with and without oral (nerve block) anesthesia were investigated using digital speech processing procedures. Vowel-to-consonant ratios, long-time and short-time spectra, fundamental frequency distributions, phonation-time ratios, and rate of utterances were calculated and compared for the normal and anesthetized conditions. The results showed that the speech produced without oral sensation was characterized by a reduction and shift of high-frequency energy, temporal disorganization primarily manifested as prolongation of utterance, and higher and more variable fundamental frequencies. The study also demonstrated applicability of computer techniques on general acoustic analysis of continuous speech.
    Type of Medium: Online Resource
    ISSN: 0022-4685
    URL: Article
    DOI: 10.1044/jshr.1601.67
    RVK:
    EQ 1000
    Language: English
    Publisher: American Speech Language Hearing Association
    Publication Date: 1973
    detail.hit.zdb_id: 2066655-X
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  • 2
    Online Resource
    Online Resource
    Automatic language identification/verification system
    Acoustical Society of America (ASA) ; 1998
    In:  The Journal of the Acoustical Society of America Vol. 104, No. 1 ( 1998-7), p. 31-
    Details
    In: The Journal of the Acoustical Society of America, Acoustical Society of America (ASA), Vol. 104, No. 1 ( 1998-7), p. 31-
    Type of Medium: Online Resource
    ISSN: 0001-4966
    URL: Article
    DOI: 10.1121/1.424049
    RVK:
    EQ 1000
    Language: Unknown
    Publisher: Acoustical Society of America (ASA)
    Publication Date: 1998
    detail.hit.zdb_id: 1461063-2
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  • 3
    Online Resource
    Online Resource
    Low bit rate speech coding system and compression
    Acoustical Society of America (ASA) ; 1995
    In:  The Journal of the Acoustical Society of America Vol. 97, No. 3 ( 1995-03-01), p. 2015-2015
    Details
    In: The Journal of the Acoustical Society of America, Acoustical Society of America (ASA), Vol. 97, No. 3 ( 1995-03-01), p. 2015-2015
    Type of Medium: Online Resource
    ISSN: 0001-4966 , 1520-8524
    URL: Article
    DOI: 10.1121/1.412038
    RVK:
    EQ 1000
    Language: English
    Publisher: Acoustical Society of America (ASA)
    Publication Date: 1995
    detail.hit.zdb_id: 1461063-2
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  • 4
    Online Resource
    Online Resource
    Tone 3 in Pekinese
    American Speech Language Hearing Association ; 1967
    In:  Journal of Speech and Hearing Research Vol. 10, No. 3 ( 1967-09), p. 629-636
    Details
    In: Journal of Speech and Hearing Research, American Speech Language Hearing Association, Vol. 10, No. 3 ( 1967-09), p. 629-636
    Abstract: This article treats the problem of tone sandhi in Pekinese phonology in terms of a perception experiment. The various shapes of tone 3 in different environments are illustrated by the use of spectrograms. The issue is whether the tone sequence 3–3 is homophonous with the sequence 2–3. There were 130 pairs of test items. The two members of each pair share the same phonological features except that of pitch contour. In other words, one member carries the tone sequence 2–3 while the other carries 3–3. Each test item was given twice, thus yielding a total of 520 items arranged in random order on a reading list from which tape recordings were made. Upon hearing an item on the tape, a subject is required to identify from each pair of 2–3 and 3–3 test items the member he hears. Should there be a phonemic distinction between the two types of tone sequences, a native speaker should have no difficulty in perceiving them as distinct. Then, it would be expected that the subjects could identify correctly in most cases, and that their responses should be reinforced by other phonetic properties and unbiased by semantic plausibility. However, the results of this experiment led to the opposite conclusion.
    Type of Medium: Online Resource
    ISSN: 0022-4685
    URL: Article
    DOI: 10.1044/jshr.1003.629
    RVK:
    EQ 1000
    Language: English
    Publisher: American Speech Language Hearing Association
    Publication Date: 1967
    detail.hit.zdb_id: 2066655-X
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  • 5
    Online Resource
    Online Resource
    Speaker Verification
    Acoustical Society of America (ASA) ; 1966
    In:  The Journal of the Acoustical Society of America Vol. 40, No. 5_Supplement ( 1966-11-01), p. 1282-1282
    Details
    In: The Journal of the Acoustical Society of America, Acoustical Society of America (ASA), Vol. 40, No. 5_Supplement ( 1966-11-01), p. 1282-1282
    Abstract: Speaker verification is defined as the process of confirming the purported identity of an informant. An automatic verification system is required to give a YES-NO decision with a corresponding measure of confidence. It would be desirable to begin with a set of ideal measurements that extract only the parameters in the voice relating to speaker identity. Since the significant parameters cannot be completely specified, an adaptive decision procedure has been utilized to focus on the characteristics that differentiate a particular speaker from a set of potential impostors. The adaptive linear-threshold element employed in these experiments is trainable for separating all input patterns into two classes. Such an approach is attractive because the measurement hardware is minimized, and the decision mechanism may be simulated quite readily on a digital computer. The present paper explores the extent to which adaptive linear-threshold elements are able to verify a person's identity based on quantized spectral patterns of his voice.
    Type of Medium: Online Resource
    ISSN: 0001-4966 , 1520-8524
    URL: Article
    DOI: 10.1121/1.2143522
    RVK:
    EQ 1000
    Language: English
    Publisher: Acoustical Society of America (ASA)
    Publication Date: 1966
    detail.hit.zdb_id: 1461063-2
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  • 6
    Online Resource
    Online Resource
    Machine Recognition of Mandarin Monosyllable
    Acoustical Society of America (ASA) ; 1964
    In:  The Journal of the Acoustical Society of America Vol. 36, No. 5_Supplement ( 1964-05-01), p. 1039-1039
    Details
    In: The Journal of the Acoustical Society of America, Acoustical Society of America (ASA), Vol. 36, No. 5_Supplement ( 1964-05-01), p. 1039-1039
    Abstract: An analysis of the syllable structure of Mandarin Chinese has been done that leads to the design of a feasible mono-syllable recognition system for the language. The system depends on a proper segmentation to simplify the decision process. The system utilized the distributional constraints of the segments in the language for more-reliable results. A simple coding process for diphthongs has been proposed. The spectrum data were processed by a high-speed speech analyzer. Formant-tracking and decision processes were programmed into an IBM-7094. Data from two speakers, each pronouncing 360 distinct monosyllables, have been studied in connection with evaluating the effectiveness of the system and the possibility of implementing it on a real-time basis. The methods and results of the system and the experiments are discussed. [Work partly supported by the U. S. Office of Naval Research grant no. NONR-495(27), and partly supported by the Department of Electrical Engineering of The Ohio State University.]
    Type of Medium: Online Resource
    ISSN: 0001-4966 , 1520-8524
    URL: Article
    DOI: 10.1121/1.2143321
    RVK:
    EQ 1000
    Language: English
    Publisher: Acoustical Society of America (ASA)
    Publication Date: 1964
    detail.hit.zdb_id: 1461063-2
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  • 7
    Online Resource
    Online Resource
    Method and apparatus for text-independent speaker recognition
    Acoustical Society of America (ASA) ; 1990
    In:  The Journal of the Acoustical Society of America Vol. 88, No. 5 ( 1990-11-01), p. 2513-2513
    Details
    In: The Journal of the Acoustical Society of America, Acoustical Society of America (ASA), Vol. 88, No. 5 ( 1990-11-01), p. 2513-2513
    Type of Medium: Online Resource
    ISSN: 0001-4966 , 1520-8524
    URL: Article
    DOI: 10.1121/1.400031
    RVK:
    EQ 1000
    Language: English
    Publisher: Acoustical Society of America (ASA)
    Publication Date: 1990
    detail.hit.zdb_id: 1461063-2
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  • 8
    Online Resource
    Online Resource
    Variations in Spoken-Digit Duration in a Restricted Environment
    Acoustical Society of America (ASA) ; 1965
    In:  The Journal of the Acoustical Society of America Vol. 37, No. 6_Supplement ( 1965-06-01), p. 1211-1211
    Details
    In: The Journal of the Acoustical Society of America, Acoustical Society of America (ASA), Vol. 37, No. 6_Supplement ( 1965-06-01), p. 1211-1211
    Abstract: The purpose of this study was to observe the natural duration of the 10 digits 0 through 9 spoken in a restricted environment. The utterances consisted of digit strings, 1, 2, and 3 words in length, separated by tone bursts presented to the speaker at 1.5-sec intervals to maintain the continuity of each utterance. Each of the 10 digits was placed in every possible environment with relation to adjacent digits and silence. Oscillograms of 850 such utterances from 5 speakers were made which displayed the log of the signal amplitude in 3 separate frequency bands, the linear amplitude scale, the log amplitude scale, and the pitch function. Word and phoneme boundaries were established from these oscillograms by a set of rules, which are described. The durations were then measured and correlated with the position of the word or phoneme in the digit string, the phonemic environment of the word, and its internal phonemic structure. A set of rules is proposed that may be used to describe the duration of a digit in such an environment.
    Type of Medium: Online Resource
    ISSN: 0001-4966 , 1520-8524
    URL: Article
    DOI: 10.1121/1.1939589
    RVK:
    EQ 1000
    Language: English
    Publisher: Acoustical Society of America (ASA)
    Publication Date: 1965
    detail.hit.zdb_id: 1461063-2
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  • 9
    Online Resource
    Online Resource
    Segment classification in continuous speech
    Institute of Electrical and Electronics Engineers (IEEE) ; 1973
    In:  IEEE Transactions on Audio and Electroacoustics Vol. 21, No. 1 ( 1973-02), p. 50-57
    Details
    In: IEEE Transactions on Audio and Electroacoustics, Institute of Electrical and Electronics Engineers (IEEE), Vol. 21, No. 1 ( 1973-02), p. 50-57
    Type of Medium: Online Resource
    ISSN: 0018-9278
    URL: Article
    DOI: 10.1109/TAU.1973.1162429
    RVK:
    SA 5530
    Language: English
    Publisher: Institute of Electrical and Electronics Engineers (IEEE)
    Publication Date: 1973
    detail.hit.zdb_id: 2034304-8
    detail.hit.zdb_id: 187297-7
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  • 10
    Online Resource
    Online Resource
    Statistical treatment of the acoustic effects of vocal effort
    Acoustical Society of America (ASA) ; 1985
    In:  The Journal of the Acoustical Society of America Vol. 78, No. S1 ( 1985-11-01), p. S37-S37
    Details
    In: The Journal of the Acoustical Society of America, Acoustical Society of America (ASA), Vol. 78, No. S1 ( 1985-11-01), p. S37-S37
    Abstract: Speech recognition performs best when trained and operated in the same environment. Such training is often impractical, especially in military applications. Apart from the difference in the noise environment, talkers change their speech habits when speaking over poor quality channels. The acoustic changes due to increased vocal effort reduce the performance of speech recognizers. While the acoustic effects of vocal effort are varied, it is possible to deal with a bulk of the differences using a statistical approach. A database of two talkers was collected under conditions which produced a variety of degrees of vocal effort. These conditions included both loud sidetone and noise which, when delivered over headphones, change stress and vocal effort. The talkers differed in their reaction to the extreme level in that one shouted and the other did not. Read materials consisted of lists of digits, randomized but the same across talkers. Acoustical parameters such as pitch, amplitude, and word duration were measured and compared across conditions. Using standard statistical procedures, transforms were computed to map the speech from several conditions into a common transformed space. Recognition experiments demonstrated that significant increases in automatic speech recognition performance can be achieved when templates from one condition are matched against unknown speech, when both have been transformed into the common space. An analysis of the recognition errors was made in light of the acoustic differences between vocal effort conditions.
    Type of Medium: Online Resource
    ISSN: 0001-4966 , 1520-8524
    URL: Article
    DOI: 10.1121/1.2022784
    RVK:
    EQ 1000
    Language: English
    Publisher: Acoustical Society of America (ASA)
    Publication Date: 1985
    detail.hit.zdb_id: 1461063-2
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