1887
banner image
No data available.
Please log in to see this content.
You have no subscription access to this content.
No metrics data to plot.
The attempt to load metrics for this article has failed.
The attempt to plot a graph for these metrics has failed.
Acoustic basis for fish prey discrimination by echolocating dolphins and porpoises
Rent:
Rent this article for
USD
10.1121/1.3147497
/content/asa/journal/jasa/126/1/10.1121/1.3147497
http://aip.metastore.ingenta.com/content/asa/journal/jasa/126/1/10.1121/1.3147497
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

(a) Experimental geometry showing a monofilament net curtain attached to a rotor with a fish subject to a monofilament net bag attached to the curtain. A monostatic echo ranging system was used in which the same transducer projected the signal and received the echoes. (b) The orientation system used in this study showing the direction of the incident signal with respect to the fish body.

Image of FIG. 2.
FIG. 2.

The dolphin-like and porpoise-like signal waveforms and spectra.

Image of FIG. 3.
FIG. 3.

Radiograph images of four species of fish that are closely related to the Atlantic cod, mullet, and sea bass used in this study (courtesy of Dr. John Horne, U. Washington).

Image of FIG. 4.
FIG. 4.

Gammatone filter bank (a) modeling the auditory filterbank of a dolphin with constant filters using the results of Branstetter et al. (2007) and (b) modeling the auditory filterbank of a harbor porpoise using the results of Popov et al. (2006).

Image of FIG. 5.
FIG. 5.

Echo waveforms using the dolphin-like biosonar signal for the four species of fish examined at the broadside, 135°, and tail aspects. Each waveform was normalized.

Image of FIG. 6.
FIG. 6.

Echo waveforms using the porpoise-like biosonar signal for the four species of fish examined at the broadside, 135°, and tail aspects. Each waveform was normalized.

Image of FIG. 7.
FIG. 7.

(Color online) Polargrams (frequency spectra versus polar angle of the echoes) for the four species of fish obtained with the dolphin-like biosonar signal. The frequency spectra for different polar angles are shown with the amplitude color coded according to the color bar on the right.

Image of FIG. 8.
FIG. 8.

(Color online) Polargrams for the four species of fish obtained with the porpoise-like biosonar signal. The frequency spectra for different polar angles are shown with the amplitude color coded according to the color bar on the right.

Image of FIG. 9.
FIG. 9.

Time-frequency representation of the echoes using the dolphin-like biosonar signal at the broadside aspect.

Image of FIG. 10.
FIG. 10.

Time-frequency representation of the echoes using the dolphin-like biosonar signal at the 135° aspect.

Image of FIG. 11.
FIG. 11.

Time-frequency representation of the echoes using the porpoise-like biosonar signal at the broadside aspect.

Image of FIG. 12.
FIG. 12.

Time-frequency representation of the echoes using the porpoise-like biosonar signal at the 135° aspect.

Loading

Article metrics loading...

/content/asa/journal/jasa/126/1/10.1121/1.3147497
2009-07-01
2014-04-25
Loading

Full text loading...

This is a required field
Please enter a valid email address
752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Acoustic basis for fish prey discrimination by echolocating dolphins and porpoises
http://aip.metastore.ingenta.com/content/asa/journal/jasa/126/1/10.1121/1.3147497
10.1121/1.3147497
SEARCH_EXPAND_ITEM