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  • 1
    Online Resource
    Online Resource
    Looking Backward, Looking Forward: MLA Members Speak
    Modern Language Association (MLA) ; 2000
    In:  PMLA/Publications of the Modern Language Association of America Vol. 115, No. 7 ( 2000-12), p. 1986-2078
    Details
    In: PMLA/Publications of the Modern Language Association of America, Modern Language Association (MLA), Vol. 115, No. 7 ( 2000-12), p. 1986-2078
    Type of Medium: Online Resource
    ISSN: 0030-8129 , 1938-1530
    URL: Article
    DOI: 10.2307/463623
    RVK:
    EA 1000
    Language: English
    Publisher: Modern Language Association (MLA)
    Publication Date: 2000
    detail.hit.zdb_id: 2439580-8
    detail.hit.zdb_id: 209526-9
    detail.hit.zdb_id: 2066864-8
    SSG: 7,11
    SSG: 7,24
    SSG: 7,12
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  • 2
    Online Resource
    Online Resource
    Erratum: “Kramers-Kronig relations applied to finite bandwidth data from suspensions of encapsulated microbubbles” [J. Acoust. Soc. Am. 108 , 2091–2106 (2000)]
    Acoustical Society of America (ASA) ; 2002
    In:  The Journal of the Acoustical Society of America Vol. 112, No. 2 ( 2002-08-01), p. 760-761
    Details
    In: The Journal of the Acoustical Society of America, Acoustical Society of America (ASA), Vol. 112, No. 2 ( 2002-08-01), p. 760-761
    Type of Medium: Online Resource
    ISSN: 0001-4966 , 1520-8524
    URL: Article
    DOI: 10.1121/1.1494808
    RVK:
    EQ 1000
    Language: English
    Publisher: Acoustical Society of America (ASA)
    Publication Date: 2002
    detail.hit.zdb_id: 1461063-2
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  • 3
    Online Resource
    Online Resource
    Kramers–Kronig relations applied to finite bandwidth data from suspensions of encapsulated microbubbles
    Acoustical Society of America (ASA) ; 2000
    In:  The Journal of the Acoustical Society of America Vol. 108, No. 5 ( 2000-11-01), p. 2091-2106
    Details
    In: The Journal of the Acoustical Society of America, Acoustical Society of America (ASA), Vol. 108, No. 5 ( 2000-11-01), p. 2091-2106
    Abstract: In this work, the Kramers–Kronig (K–K) relations are applied to experimental data of resonant nature by limiting the interval of integration to the measurement spectrum. The data are from suspensions of encapsulated microbubbles (Albunex®) and have the characteristics of an ultrasonic notch filter. The goal is to test the consistency of this dispersion and attenuation data with the Kramers–Kronig relations in a strict manner, without any parameters from outside the experimental bandwidth entering in to the calculations. In the course of reaching the goal, the artifacts associated with the truncation of the integrals are identified and it is shown how their impacts on the results can be minimized. The problem is first approached analytically by performing the Kramers–Kronig calculations over a restricted spectral band on a specific Hilbert transform pair (Lorentzian curves). The resulting closed-form solutions illustrate the type of artifacts that can occur due to truncation and also show that accurate results can be achieved. Next, both twice-subtracted and lower-order Kramers–Kronig relations are applied directly to the attenuation and dispersion data from the encapsulated microbubbles. Only parameters from within the experimental attenuation coefficient and phase velocity data sets are used. The twice-subtracted K–K relations produced accurate estimates for both the attenuation coefficient and dispersion across all 12 data sets. Lower-order Kramers–Kronig relations also produced good results over the finite spectrum for most of the data. In 2 of the 12 cases, the twice-subtracted relations tracked the data markedly better than the lower-order predictions. These calculations demonstrate that truncation artifacts do not overwhelm the causal link between the phase velocity and the attenuation coefficient for finite bandwidth calculations. This work provides experimental evidence supporting the validity of the subtracted forms of the acoustic K–K relations between the phase velocity and attenuation coefficient.
    Type of Medium: Online Resource
    ISSN: 0001-4966 , 1520-8524
    URL: Article
    DOI: 10.1121/1.1312364
    RVK:
    EQ 1000
    Language: English
    Publisher: Acoustical Society of America (ASA)
    Publication Date: 2000
    detail.hit.zdb_id: 1461063-2
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  • 4
    Online Resource
    Online Resource
    Measurement and analysis of acoustic intensity fluctuations induced by South China Sea internal solitons
    Acoustical Society of America (ASA) ; 2002
    In:  The Journal of the Acoustical Society of America Vol. 112, No. 5_Supplement ( 2002-11-01), p. 2448-2449
    Details
    In: The Journal of the Acoustical Society of America, Acoustical Society of America (ASA), Vol. 112, No. 5_Supplement ( 2002-11-01), p. 2448-2449
    Abstract: In May 2001, a suite of acoustic and oceanographic sensors was deployed by a team of US, Taiwan, and Singapore scientists in the NE South China Sea to study the effects of ocean variability on low-frequency sound propagation in a shelfbreak environment. The primary acoustic receiver was an L-shaped hydrophone array moored on the continental shelf that monitored a variety of signals transmitted parallel to and across the shelfbreak by fixed and towed sources. This talk discusses and contrasts the amplitude fluctuations in the signals measured by the vertical segment of the listening array in two different days, one with the passage of several huge solitons that depressed the shallow isotherms to the sea bottom, and one with a much less energetic soliton field. In addition to exhibiting large temporal changes, the acoustic data also show a much more vertically diffused sound intensity field as the huge solitons occupied and passed through the transmission path. Using a space-time continuous empirical sound speed model based on the moored temperature records and geoacoustic parameters estimated using the close-range towed source signals, the observed acoustic intensity fluctuations are explained using coupled-mode physics. [Work supported by ONR under the ASIAEX program.]
    Type of Medium: Online Resource
    ISSN: 0001-4966 , 1520-8524
    URL: Article
    DOI: 10.1121/1.1520962
    RVK:
    EQ 1000
    Language: English
    Publisher: Acoustical Society of America (ASA)
    Publication Date: 2002
    detail.hit.zdb_id: 1461063-2
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  • 5
    Online Resource
    Online Resource
    Schlieren imaging of shock waves from a trumpet
    Acoustical Society of America (ASA) ; 2003
    In:  The Journal of the Acoustical Society of America Vol. 114, No. 6 ( 2003-12-01), p. 3363-3367
    Details
    In: The Journal of the Acoustical Society of America, Acoustical Society of America (ASA), Vol. 114, No. 6 ( 2003-12-01), p. 3363-3367
    Abstract: A sensitive, large-aperture schlieren optical instrument is applied to observe gas-dynamic phenomena at the exit of a trumpet. Shock waves are seen, especially for loud, high-pitched trumpet notes, and several illustrations are given. Microphone waveforms are given for representative examples. These shock waves arise from the shock-tube-like effect of the performer’s intermittent breath pressure driving the cylindrical duct of the trumpet, and are the result of cumulative nonlinear acoustic propagation inside the trumpet bore. They are, however, very weak, traveling only marginally above the acoustic speed. In the 118–124 peak dB(A) range, they are near the weak limit of shock wave visibility by schlieren optics. The schlieren evidence confirms that the frequency of the emitted shock waves corresponds to the frequency of the note being played. Ancillary laminar and turbulent jet phenomena associated with the performer’s breath are also visible in the images.
    Type of Medium: Online Resource
    ISSN: 0001-4966 , 1520-8524
    URL: Article
    DOI: 10.1121/1.1628682
    RVK:
    EQ 1000
    Language: English
    Publisher: Acoustical Society of America (ASA)
    Publication Date: 2003
    detail.hit.zdb_id: 1461063-2
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  • 6
    Online Resource
    Online Resource
    Training experienced hearing-aid users to identify syllable-initial consonants in quiet and noise
    Acoustical Society of America (ASA) ; 2004
    In:  The Journal of the Acoustical Society of America Vol. 115, No. 5_Supplement ( 2004-05-01), p. 2387-2387
    Details
    In: The Journal of the Acoustical Society of America, Acoustical Society of America (ASA), Vol. 115, No. 5_Supplement ( 2004-05-01), p. 2387-2387
    Abstract: Five experienced hearing-aid users with sensorineural hearing loss were given 14 h of intensive training identifying consonants in quiet and noise. Their performance was compared to that of five similar hearing-aid users with no special training. All listeners had moderate to severe hearing losses and had worn hearing aids for at least 1 year. All were pretested with a set of 20 consonants combined with three vowels /I,a,u/ as spoken by six different talkers. Pretests were conducted in quiet and in noise (multitalker babble) at moderate signal-to-noise ratios (SNRs). Training was conducted with eight target consonants (TCs). The TCs were in each listener’s middle range of difficulty, and the three most common confusors for each target were individually selected, forming target sets of four consonants. Training was conducted in quiet and noise. During training, trial-by-trial feedback was given and, following an error, the listener could rapidly compare the intended syllable with its confusor. In noise, the SNR adapted to a criterion of 80 correct. There were no differences between training and control listeners on the pretests. After training, there was a significant 5% advantage for the trained listeners. Training generalized to talkers never heard during training. [Work supported by NIDCD.]
    Type of Medium: Online Resource
    ISSN: 0001-4966 , 1520-8524
    URL: Article
    DOI: 10.1121/1.4809281
    RVK:
    EQ 1000
    Language: English
    Publisher: Acoustical Society of America (ASA)
    Publication Date: 2004
    detail.hit.zdb_id: 1461063-2
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  • 7
    Online Resource
    Online Resource
    On Literature
    JSTOR ; 2003
    In:  World Literature Today Vol. 77, No. 3/4 ( 2003), p. 157-
    Details
    In: World Literature Today, JSTOR, Vol. 77, No. 3/4 ( 2003), p. 157-
    Type of Medium: Online Resource
    ISSN: 0196-3570
    URL: Article
    DOI: 10.2307/40158339
    RVK:
    EA 1000
    Language: English
    Publisher: JSTOR
    Publication Date: 2003
    detail.hit.zdb_id: 2067813-7
    detail.hit.zdb_id: 131663-1
    SSG: 7,12
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  • 8
    Online Resource
    Online Resource
    Real-time timbre analysis as a technique for live synthesis control
    Acoustical Society of America (ASA) ; 2004
    In:  The Journal of the Acoustical Society of America Vol. 116, No. 4_Supplement ( 2004-10-01), p. 2563-2563
    Details
    In: The Journal of the Acoustical Society of America, Acoustical Society of America (ASA), Vol. 116, No. 4_Supplement ( 2004-10-01), p. 2563-2563
    Abstract: The possibility is explored of controlling synthesis using an instrumental or other sound source, not by trying to recreate the time-varying timbre of the musician’s sound exactly, but instead by making the output sound reflect changes in the input, in a way a musician can control in order to produce an interesting stream of synthetic sound. First the range of spectra available from the sound source, and also that available from the synthesis technique, are estimated. A very simple measure of timbre is used that maps any sound into a point in a ten-dimensional space. (As a byproduct, the ten-dimensional volume spanned by a sound source gives a rough measure of timbral variability.) Then synthesis parameters are chosen for the synthesis algorithm by searching a database of known output timbres.
    Type of Medium: Online Resource
    ISSN: 0001-4966 , 1520-8524
    URL: Article
    DOI: 10.1121/1.4785235
    RVK:
    EQ 1000
    Language: English
    Publisher: Acoustical Society of America (ASA)
    Publication Date: 2004
    detail.hit.zdb_id: 1461063-2
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  • 9
    Online Resource
    Online Resource
    Broadband time-domain reflectometry measurement of attenuation and phase velocity in highly attenuating suspensions with application to the ultrasound contrast medium Albunex®
    Acoustical Society of America (ASA) ; 2000
    In:  The Journal of the Acoustical Society of America Vol. 108, No. 2 ( 2000-08-01), p. 813-820
    Details
    In: The Journal of the Acoustical Society of America, Acoustical Society of America (ASA), Vol. 108, No. 2 ( 2000-08-01), p. 813-820
    Abstract: We describe a technique for broadband measurements of the attenuation coefficient and phase velocity of highly attenuating liquid suspensions. To validate the technique we apply it to the ultrasound contrast agent Albunex® at concentrations ranging from 0.69×106 particles/mL to 364×106 particles/mL. These longitudinal wave measurements were performed on Albunex suspensions maintained at 37 °C in a special time-domain reflectometer designed and constructed in our laboratory. The frequency-dependent attenuation coefficients and phase velocities obtained in the reflectometer are compared to broadband through-transmission measurements of these same quantities, which were also performed in our laboratory. Although comparison data between the two techniques are only available at lower concentrations, the agreement is quite good and serves to validate the methods described in this paper.
    Type of Medium: Online Resource
    ISSN: 0001-4966 , 1520-8524
    URL: Article
    DOI: 10.1121/1.429614
    RVK:
    EQ 1000
    Language: English
    Publisher: Acoustical Society of America (ASA)
    Publication Date: 2000
    detail.hit.zdb_id: 1461063-2
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  • 10
    Online Resource
    Online Resource
    Technical considerations in the design of a wearable voice dosimeter
    Acoustical Society of America (ASA) ; 2002
    In:  The Journal of the Acoustical Society of America Vol. 112, No. 5_Supplement ( 2002-11-01), p. 2304-2304
    Details
    In: The Journal of the Acoustical Society of America, Acoustical Society of America (ASA), Vol. 112, No. 5_Supplement ( 2002-11-01), p. 2304-2304
    Abstract: This paper deals with the technical issues involved in the design of a voice dosimeter, a wearable device to be used by teachers to measure vocal dose on the job, at home and elsewhere during the total waking hours of each day. The concept of vocal dose is introduced and definitions of various dose measures are presented. Practical issues of the design are discussed, including software development, selection of an external transducer, and devising a comfortable, reliable and repeatable means of attaching the transducer to the subject. The dosimeter software was designed to calculate SPL (sound pressure level), F0 (fundamental frequency) and voicing time. In addition, an interactive portion was developed that prompts the user to verify the validity of the stored data every two hours, and to perform a rating of vocal effort and quality of soft phonation. The SAL (surface acceleration level) to SPL relation for the prototype dosimeter was determined. The prototype has been field-tested, and SPL, F0, and voicing time data have been analyzed. A sensitivity analysis shows that small errors in SPL have a large effect on the accuracy of dose calculations, while F0 errors have less of an effect.
    Type of Medium: Online Resource
    ISSN: 0001-4966 , 1520-8524
    URL: Article
    DOI: 10.1121/1.4779276
    RVK:
    EQ 1000
    Language: English
    Publisher: Acoustical Society of America (ASA)
    Publication Date: 2002
    detail.hit.zdb_id: 1461063-2
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