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  • Online Resource  (15)
  • Acoustical Society of America (ASA)  (15)
  • 1
    Online Resource
    Online Resource
    Cepstral and stationarity analyses of full-term and premature infants' cries
    Acoustical Society of America (ASA) ; 1974
    In:  The Journal of the Acoustical Society of America Vol. 56, No. 3 ( 1974-09-01), p. 975-980
    Details
    In: The Journal of the Acoustical Society of America, Acoustical Society of America (ASA), Vol. 56, No. 3 ( 1974-09-01), p. 975-980
    Abstract: Pain cries elicited from nine full-term, clinically normal neonates and five premature neonates with no reported abnormalities were studied using computer analysis. Based on the source-filter theory of speech production, greater variability of fundamental frequency (F0) and of cry spectra were hypothesized for premature infants. The cepstral technique was used to extract F0 from the cry spectra of each infant. The null hypothesis of no differences in variability of F0 between groups was tentatively accepted. A Test for Stationarity was used to determine spectral variability. As predicted, results showed greater variability of cry spectra for premature infants. Spectral variability findings were interpreted as probably reflecting differences in underlying neurophysiological maturity.
    Type of Medium: Online Resource
    ISSN: 0001-4966 , 1520-8524
    URL: Article
    DOI: 10.1121/1.1903358
    RVK:
    EQ 1000
    Language: English
    Publisher: Acoustical Society of America (ASA)
    Publication Date: 1974
    detail.hit.zdb_id: 1461063-2
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  • 2
    Online Resource
    Online Resource
    Physical effects of sound exposure from underwater explosions on Pacific mackerel ( Scomber japonicus ): Effects on non-auditory tissues
    Acoustical Society of America (ASA) ; 2022
    In:  The Journal of the Acoustical Society of America Vol. 151, No. 6 ( 2022-06-01), p. 3947-3956
    Details
    In: The Journal of the Acoustical Society of America, Acoustical Society of America (ASA), Vol. 151, No. 6 ( 2022-06-01), p. 3947-3956
    Abstract: Underwater explosions from activities such as construction, demolition, and military activities can damage non-auditory tissues in fishes. To better understand these effects, Pacific mackerel (Scomber japonicus) were placed in mid-depth cages with water depth of approximately 19.5 m and exposed at distances of 21 to 807 m to a single mid-depth detonation of C4 explosive (6.2 kg net explosive weight). Following exposure, potential correlations between blast acoustics and observed physical effects were examined. Primary effects were damage to the swim bladder and kidney that exceeded control levels at ≤333 m from the explosion [peak sound pressure level 226 dB re 1 μPa, sound exposure level (SEL) 196 dB re 1 μPa2 s, pressure impulse 98 Pa s]. A proportion of fish were dead upon retrieval at 26–40 min post exposure in 6 of 12 cages locate d ≤157 m from the explosion. All fish that died within this period suffered severe injuries, especially swim bladder and kidney rupture. Logistic regression models demonstrated that fish size or mass was not important in determining susceptibility to injury and that peak pressure and SEL were better predictors of injury than was pressure impulse.
    Type of Medium: Online Resource
    ISSN: 0001-4966 , 1520-8524
    URL: Article
    DOI: 10.1121/10.0011587
    RVK:
    EQ 1000
    Language: English
    Publisher: Acoustical Society of America (ASA)
    Publication Date: 2022
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  • 3
    Online Resource
    Online Resource
    Processing of acoustic signals in the auditory system of bony fish
    Acoustical Society of America (ASA) ; 1988
    In:  The Journal of the Acoustical Society of America Vol. 83, No. 1 ( 1988-01-01), p. 338-349
    Details
    In: The Journal of the Acoustical Society of America, Acoustical Society of America (ASA), Vol. 83, No. 1 ( 1988-01-01), p. 338-349
    Abstract: In order to determine unambiguously the bearing of a sound source, a fish must be able to resolve acoustic pressure and the components of the acoustic displacement vector from the signals detected by the otolithic organs. A new hypothesis for the processing of acoustical information by bony fish is presented. It is demonstrated that much of the processing required to do this may be implicit in the structure of the ear and its associated neural innervation. Possible algorithms are presented that the central nervous system might use to further process the derived information to localize a sound source and discriminate frequency and range. The hypothesis is shown to be consistent with much of what is known of the morphology and physiology of the auditory system of bony fishes.
    Type of Medium: Online Resource
    ISSN: 0001-4966 , 1520-8524
    URL: Article
    DOI: 10.1121/1.396444
    RVK:
    EQ 1000
    Language: English
    Publisher: Acoustical Society of America (ASA)
    Publication Date: 1988
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  • 4
    Online Resource
    Online Resource
    Arthur A. Myrberg, Jr. • 1933–2005
    Acoustical Society of America (ASA) ; 2005
    In:  The Journal of the Acoustical Society of America Vol. 118, No. 6 ( 2005-12-01), p. 3377-3377
    Details
    In: The Journal of the Acoustical Society of America, Acoustical Society of America (ASA), Vol. 118, No. 6 ( 2005-12-01), p. 3377-3377
    Type of Medium: Online Resource
    ISSN: 0001-4966 , 1520-8524
    URL: Article
    DOI: 10.1121/1.2130948
    RVK:
    EQ 1000
    Language: English
    Publisher: Acoustical Society of America (ASA)
    Publication Date: 2005
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  • 5
    Online Resource
    Online Resource
    Underwater sound from pile driving, what is it and why does it matter
    Acoustical Society of America (ASA) ; 2014
    In:  The Journal of the Acoustical Society of America Vol. 135, No. 4_Supplement ( 2014-04-01), p. 2312-2312
    Details
    In: The Journal of the Acoustical Society of America, Acoustical Society of America (ASA), Vol. 135, No. 4_Supplement ( 2014-04-01), p. 2312-2312
    Abstract: Pile driving as used for in-water construction can produce high levels of underwater sound that has potential to produce physiological and/or behavioral effects on fish, benthic invertebrates, and marine mammals. There are two basic pile driving methods: impact pile driving where the pile is driven by strikes from a high-energy hammer, and vibratory pile driving where the pile is effectively vibrated into the sediment. Often both methods are used on the same pile. At ranges on the order of 10 m, and considering steel piles of diameter 0.75–1 m, vibratory pile driving produces underwater sound pressures of order 100–1000 Pa, which is often sustained for minutes. In contrast, each impact pile strike produces peak sound pressures on the order of 100 kPa, with effective duration of the sound from the strike being of order tens of milliseconds. Measurements made both far from the pile source (range many depths) and close-in (range of about 1–2 depths) for impact and vibratory pile driving are presented, along with examples modeling of such sound. We conclude by showing why such sounds matter to aquatic life; potential effects include injury at close range and behavioral changes, including evasion resulting in habitat loss at greater distance.
    Type of Medium: Online Resource
    ISSN: 0001-4966 , 1520-8524
    URL: Article
    DOI: 10.1121/1.4877620
    RVK:
    EQ 1000
    Language: English
    Publisher: Acoustical Society of America (ASA)
    Publication Date: 2014
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  • 6
    Online Resource
    Online Resource
    Model for the peripheral processing of sound in bony fish
    Acoustical Society of America (ASA) ; 1985
    In:  The Journal of the Acoustical Society of America Vol. 78, No. S1 ( 1985-11-01), p. S13-S14
    Details
    In: The Journal of the Acoustical Society of America, Acoustical Society of America (ASA), Vol. 78, No. S1 ( 1985-11-01), p. S13-S14
    Abstract: A new hypothesis for the processing of acoustical information by bony fish is presented. The hypothesis proposes that the ear itself can perform most of the calculations required to localize a sound source, and discriminate frequency and beam form for signal to noise enhancement. Prior theories assume all of the analysis occurs in the central nervous system (CNS). A mechanism is demonstrated by which the ears may resolve the particle velocity into three vectorial components and determine the time derivative of the acoustic pressure. This information can be used to localize a sound source, assuming that the CNS is capable of evaluating the ratio of the appropriate velocity components. If localization is accomplished in this manner, it follows that the CNS would also be capable of finding the ratio between the magnitude of the acoustic particle velocity and the time derivative of the acoustic pressure. This ratio is shown to be proportional to frequency in the farfield, and the product of the frequency squared and the distance from the source in the nearfield. Thus discrimination between frequencies is possible at any distance, absolute frequency can be determined in the farfield, and some capability to discriminate range might also be possible. Supporting evidence from the literature is presented. [Work supported in part by ONR and NIH.]
    Type of Medium: Online Resource
    ISSN: 0001-4966 , 1520-8524
    URL: Article
    DOI: 10.1121/1.2022658
    RVK:
    EQ 1000
    Language: English
    Publisher: Acoustical Society of America (ASA)
    Publication Date: 1985
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  • 7
    Online Resource
    Online Resource
    Acoustic Communication
    Acoustical Society of America (ASA) ; 2003
    In:  The Journal of the Acoustical Society of America Vol. 114, No. 5 ( 2003-11-01), p. 2528-2529
    Details
    In: The Journal of the Acoustical Society of America, Acoustical Society of America (ASA), Vol. 114, No. 5 ( 2003-11-01), p. 2528-2529
    Type of Medium: Online Resource
    ISSN: 0001-4966 , 1520-8524
    URL: Article
    DOI: 10.1121/1.1618771
    RVK:
    EQ 1000
    Language: English
    Publisher: Acoustical Society of America (ASA)
    Publication Date: 2003
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  • 8
    Online Resource
    Online Resource
    Anatomical effects of intense tone stimulation in the goldfish ear: Dependence on sound-pressure level and frequency
    Acoustical Society of America (ASA) ; 1987
    In:  The Journal of the Acoustical Society of America Vol. 81, No. S1 ( 1987-05-01), p. S7-S7
    Details
    In: The Journal of the Acoustical Society of America, Acoustical Society of America (ASA), Vol. 81, No. S1 ( 1987-05-01), p. S7-S7
    Abstract: The final results of an experimental investigation to study the extent of frequency regionalization in the ear of goldfish are presented. Goldfish about 6 in. in body length were subjected to intense tones at 250 and 500 Hz, and four different sound-pressure levels. They were placed in a waveguide and constrained as close as possible to a pressure antinode so that the primary response of the inner ear was due to the induced motion of the swimbladder and Weberian ossicles. Both saccular and lagenar maculae were examined under a scanning electron microscope to determine the location and extent of hair cell damage as a function of frequency and sound-pressure level. The results are not inconsistent with the gross frequency regionalization in the saccular macula of codfish determined by P. S. Enger [Hearing and Sound Communication in Fishes (Springer, New York, 1981), pp. 243–255]. In addition, the results indicate a possible breakdown of the Weberian apparatus at extremely high sound-pressure levels where the primary site of damage switches from the saccule to lagena. This is consistent with the behavior of the system based on its viscoelastic properties as postulated by R. McN. Alexander [J. Exp. Biol. 38, 747–757 (1961)] . Work supported in part by ONR and NIH.]
    Type of Medium: Online Resource
    ISSN: 0001-4966 , 1520-8524
    URL: Article
    DOI: 10.1121/1.2024415
    RVK:
    EQ 1000
    Language: English
    Publisher: Acoustical Society of America (ASA)
    Publication Date: 1987
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  • 9
    Online Resource
    Online Resource
    Anatomical effects of intense tone stimulation in the ear of bony fishes
    Acoustical Society of America (ASA) ; 1986
    In:  The Journal of the Acoustical Society of America Vol. 80, No. S1 ( 1986-12-01), p. S75-S75
    Details
    In: The Journal of the Acoustical Society of America, Acoustical Society of America (ASA), Vol. 80, No. S1 ( 1986-12-01), p. S75-S75
    Abstract: In an attempt to determine whether or not a place-type mechanism for frequency discrimination exists in the ears of bony fishes, an experimental investigation of three species was conducted. Goldfish, Oscars, and Kissing Gouramis were exposed to intense single-frequency sound fields for 2 h and then sacrificed. During the exposure, the fish were constrained inside a waveguide at a point of maximal acoustic pressure and minimal particle velocity. The saccular maculae were examined under a scanning electron microscope to determine the location of hair cell damage as a function of frequency. Preliminary results indicate that the location of the damage may not depend on frequency. [Work supported in part by ONR and NIH.]
    Type of Medium: Online Resource
    ISSN: 0001-4966 , 1520-8524
    URL: Article
    DOI: 10.1121/1.2023958
    RVK:
    EQ 1000
    Language: English
    Publisher: Acoustical Society of America (ASA)
    Publication Date: 1986
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  • 10
    Online Resource
    Online Resource
    Physical effects of sound exposure from underwater explosions on Pacific mackerel ( Scomber japonicus ): Effects on the inner ear
    Acoustical Society of America (ASA) ; 2022
    In:  The Journal of the Acoustical Society of America Vol. 152, No. 2 ( 2022-08-01), p. 733-744
    Details
    In: The Journal of the Acoustical Society of America, Acoustical Society of America (ASA), Vol. 152, No. 2 ( 2022-08-01), p. 733-744
    Abstract: Studies of the effects of sounds from underwater explosions on fishes have not included examination of potential effects on the ear. Caged Pacific mackerel (Scomber japonicus) located at seven distances (between approximately 35 and 800 m) from a single detonation of 4.5 kg of C4 explosives were exposed. After fish were recovered from the cages, the sensory epithelia of the saccular region of the inner ears were prepared and then examined microscopically. The number of hair cell (HC) ciliary bundles was counted at ten preselected 2500 μm2 regions. HCs were significantly reduced in fish exposed to the explosion as compared to the controls. The extent of these differences varied by saccular region, with damage greater in the rostral and caudal ends and minimal in the central region. The extent of effect also varied in animals at different distances from the explosion, with damage occurring in fish as far away as 400 m. While extrapolation to other species and other conditions (e.g., depth, explosive size, and distance) must be performed with extreme caution, the effects of explosive sounds should be considered when environmental impacts are estimated for marine projects.
    Type of Medium: Online Resource
    ISSN: 0001-4966 , 1520-8524
    URL: Article
    DOI: 10.1121/10.0012991
    RVK:
    EQ 1000
    Language: English
    Publisher: Acoustical Society of America (ASA)
    Publication Date: 2022
    detail.hit.zdb_id: 1461063-2
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