Whitlow W. L. Au
The Sonar of Dolphins
Whitlow W. L. Au
The Sonar of Dolphins
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The extraordinary ability of dolphins to echolocate has fascinated scientists and the public since its discovery in the late 1950's. The Sonar of Dolphins is the first book to summarize modern research on this subject, and presents a broad synthesis of this very interdisciplinary subject. The author is an internationally-recognized expert on dolphin sonar and is in a unique position to bring together research on the physiological, mathematical and engineering aspects of dolphin sonar. The Sonar of Dolphins will be of interest to auditory researchers, electrical engineers, acoustical…mehr
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The extraordinary ability of dolphins to echolocate has fascinated scientists and the public since its discovery in the late 1950's. The Sonar of Dolphins is the first book to summarize modern research on this subject, and presents a broad synthesis of this very interdisciplinary subject. The author is an internationally-recognized expert on dolphin sonar and is in a unique position to bring together research on the physiological, mathematical and engineering aspects of dolphin sonar. The Sonar of Dolphins will be of interest to auditory researchers, electrical engineers, acoustical physicists, and mammalian physiologists. TOC:Introduction; The Receiver System; Characteristics of the Receiver for Simple Signals; Characteristics of the Receiver for Complex Signals; The Sonar Signal Transmission System; Characteristics of the Transmission System; Characteristics of Dolphin Sonar Signals; Capabilities of the Active Sonar System; Biosonar Discrimination and Target Recognition; Biosonar Signal Processing Models; A Comparison Between the Sonar of Bats and Dolphins; A Road Map for Future Research
Produktdetails
- Produktdetails
- Verlag: Springer New York / Springer US, New York, N.Y.
- 1993
- Seitenzahl: 292
- Erscheinungstermin: 15. Januar 1993
- Englisch
- Abmessung: 260mm x 183mm x 22mm
- Gewicht: 751g
- ISBN-13: 9780387978352
- ISBN-10: 0387978356
- Artikelnr.: 21500432
- Verlag: Springer New York / Springer US, New York, N.Y.
- 1993
- Seitenzahl: 292
- Erscheinungstermin: 15. Januar 1993
- Englisch
- Abmessung: 260mm x 183mm x 22mm
- Gewicht: 751g
- ISBN-13: 9780387978352
- ISBN-10: 0387978356
- Artikelnr.: 21500432
1 Introduction.
1.1 Historical Perspective.
1.2 Some Underwater Acoustics.
1.3 The Time and Frequency Domains.
1.4 Experimental Psychological Methodology.
1.5 Signal Detection Theory.
2 The Receiving System.
2.1 The Outer Ears.
2.2 The Middle Ear.
2.3 The Inner Ear.
2.4 Summary.
3 Characteristics of the Receiving System for Simple Signals.
3.1 Hearing Sensitivity.
3.2 Spectral Analysis Sensitivity.
3.3 Directional Hearing.
3.4 Response Bias and Sensitivity in Hearing.
3.5 Summary.
Appendix: Derivation of the Receiving Directivity Index.
4 Characteristics of the Receiving System for Complex Signals.
4.1 Perception of Click Signals.
4.2 Perception of Time Separation Pitch.
4.3 Summary.
5 The Sonar Signal Transmission System.
5.1 Preliminary Examination of Biosonar Signals.
5.2 Sound Production Mechanism.
5.3 Acoustic Propagation in the Dolphin's Head.
5.4 Summary.
6 Characteristics of the Transmission System.
6.1 The Concept of Near and Far Acoustic Fields.
6.2 The Dolphin Near
to Far
Field Transition Region.
6.3 The Acoustic Field on a Dolphin's Head.
6.4 Directional Pattern of Biosonar Signals.
6.5 Equivalent Planar Circular Aperture.
6.6 Summary.
7 Characteristics of Dolphin Sonar Signals.
7.1 Click Intervals.
7.2 Frequency Characteristics.
7.3 Click Source Levels.
7.4 Number of Clicks and Response Latencies.
7.5 Signals from Other Species.
7.6 Summary.
8 Target Detection Capability of the Active Sonar System.
8.1 The Physics of Acoustic Reflection by Targets.
8.2 Noise
Limited Form of the Sonar Equation.
8.3 Biosonar Detection Capabilities.
8.4 Detection of Complex Echoes.
8.5 Comparison Between a Dolphin and an Ideal Receiver.
8.6 Target Detection in Reverberation.
8.7 Summary.
9 Biosonar Discrimination, Recognition, and Classification.
9.1 Mathematical Tools for the Analysis of Target Echoes.
9.2 Target Size Discrimination.
9.3 Target Structure Discrimination.
9.4 Target Shape Discrimination.
9.5 Delayed Matching to Sample.
9.6 Target Range Difference Discrimination.
9.7 Insights from Human Listening Experiments.
9.8 Summary.
10 Signal Processing and Signal Processing Models.
10.1 Analysis of Dolphin Sonar Signals.
10.2 The Dolphin Modeled as an Energy Detector.
10.3 Signal Processing Models for Target Recognition.
10.4 Artificial Neural Networks and Target Recognition.
10.5 Summary.
11 Comparison Between the Sonar of Bats and Dolphins.
11.1 Comparison of Sonar Signals.
11.2 Comparison of Signal Detection Capabilities.
11.3 Comparison of Target Discrimination Capabilities.
11.4 Doppler Compensation and Flutter Detection.
11.5 Summary.
12 Road Map for Future Research.
12.1 Mechanisms of Sound Reception and Hearing.
12.2 Mechanisms of Sound Production and Transmission.
12.3 Biosonar Capabilities and Mechanisms.
12.4 Signal Processing Models.
12.5 Natural and Dynamic Biosonar Behavior.
12.6 Concluding Remarks.
1.1 Historical Perspective.
1.2 Some Underwater Acoustics.
1.3 The Time and Frequency Domains.
1.4 Experimental Psychological Methodology.
1.5 Signal Detection Theory.
2 The Receiving System.
2.1 The Outer Ears.
2.2 The Middle Ear.
2.3 The Inner Ear.
2.4 Summary.
3 Characteristics of the Receiving System for Simple Signals.
3.1 Hearing Sensitivity.
3.2 Spectral Analysis Sensitivity.
3.3 Directional Hearing.
3.4 Response Bias and Sensitivity in Hearing.
3.5 Summary.
Appendix: Derivation of the Receiving Directivity Index.
4 Characteristics of the Receiving System for Complex Signals.
4.1 Perception of Click Signals.
4.2 Perception of Time Separation Pitch.
4.3 Summary.
5 The Sonar Signal Transmission System.
5.1 Preliminary Examination of Biosonar Signals.
5.2 Sound Production Mechanism.
5.3 Acoustic Propagation in the Dolphin's Head.
5.4 Summary.
6 Characteristics of the Transmission System.
6.1 The Concept of Near and Far Acoustic Fields.
6.2 The Dolphin Near
to Far
Field Transition Region.
6.3 The Acoustic Field on a Dolphin's Head.
6.4 Directional Pattern of Biosonar Signals.
6.5 Equivalent Planar Circular Aperture.
6.6 Summary.
7 Characteristics of Dolphin Sonar Signals.
7.1 Click Intervals.
7.2 Frequency Characteristics.
7.3 Click Source Levels.
7.4 Number of Clicks and Response Latencies.
7.5 Signals from Other Species.
7.6 Summary.
8 Target Detection Capability of the Active Sonar System.
8.1 The Physics of Acoustic Reflection by Targets.
8.2 Noise
Limited Form of the Sonar Equation.
8.3 Biosonar Detection Capabilities.
8.4 Detection of Complex Echoes.
8.5 Comparison Between a Dolphin and an Ideal Receiver.
8.6 Target Detection in Reverberation.
8.7 Summary.
9 Biosonar Discrimination, Recognition, and Classification.
9.1 Mathematical Tools for the Analysis of Target Echoes.
9.2 Target Size Discrimination.
9.3 Target Structure Discrimination.
9.4 Target Shape Discrimination.
9.5 Delayed Matching to Sample.
9.6 Target Range Difference Discrimination.
9.7 Insights from Human Listening Experiments.
9.8 Summary.
10 Signal Processing and Signal Processing Models.
10.1 Analysis of Dolphin Sonar Signals.
10.2 The Dolphin Modeled as an Energy Detector.
10.3 Signal Processing Models for Target Recognition.
10.4 Artificial Neural Networks and Target Recognition.
10.5 Summary.
11 Comparison Between the Sonar of Bats and Dolphins.
11.1 Comparison of Sonar Signals.
11.2 Comparison of Signal Detection Capabilities.
11.3 Comparison of Target Discrimination Capabilities.
11.4 Doppler Compensation and Flutter Detection.
11.5 Summary.
12 Road Map for Future Research.
12.1 Mechanisms of Sound Reception and Hearing.
12.2 Mechanisms of Sound Production and Transmission.
12.3 Biosonar Capabilities and Mechanisms.
12.4 Signal Processing Models.
12.5 Natural and Dynamic Biosonar Behavior.
12.6 Concluding Remarks.
1 Introduction.- 1.1 Historical Perspective.- 1.2 Some Underwater Acoustics.- 1.3 The Time and Frequency Domains.- 1.4 Experimental Psychological Methodology.- 1.5 Signal Detection Theory.- 2 The Receiving System.- 2.1 The Outer Ears.- 2.2 The Middle Ear.- 2.3 The Inner Ear.- 2.4 Summary.- 3 Characteristics of the Receiving System for Simple Signals.- 3.1 Hearing Sensitivity.- 3.2 Spectral Analysis Sensitivity.- 3.3 Directional Hearing.- 3.4 Response Bias and Sensitivity in Hearing.- 3.5 Summary.- Appendix: Derivation of the Receiving Directivity Index.- 4 Characteristics of the Receiving System for Complex Signals.- 4.1 Perception of Click Signals.- 4.2 Perception of Time Separation Pitch.- 4.3 Summary.- 5 The Sonar Signal Transmission System.- 5.1 Preliminary Examination of Biosonar Signals.- 5.2 Sound Production Mechanism.- 5.3 Acoustic Propagation in the Dolphin's Head.- 5.4 Summary.- 6 Characteristics of the Transmission System.- 6.1 The Concept of Near and Far Acoustic Fields.- 6.2 The Dolphin Near- to Far-Field Transition Region.- 6.3 The Acoustic Field on a Dolphin's Head.- 6.4 Directional Pattern of Biosonar Signals.- 6.5 Equivalent Planar Circular Aperture.- 6.6 Summary.- 7 Characteristics of Dolphin Sonar Signals.- 7.1 Click Intervals.- 7.2 Frequency Characteristics.- 7.3 Click Source Levels.- 7.4 Number of Clicks and Response Latencies.- 7.5 Signals from Other Species.- 7.6 Summary.- 8 Target Detection Capability of the Active Sonar System.- 8.1 The Physics of Acoustic Reflection by Targets.- 8.2 Noise-Limited Form of the Sonar Equation.- 8.3 Biosonar Detection Capabilities.- 8.4 Detection of Complex Echoes.- 8.5 Comparison Between a Dolphin and an Ideal Receiver.- 8.6 Target Detection in Reverberation.- 8.7 Summary.- 9 Biosonar Discrimination, Recognition, and Classification.- 9.1 Mathematical Tools for the Analysis of Target Echoes.- 9.2 Target Size Discrimination.- 9.3 Target Structure Discrimination.- 9.4 Target Shape Discrimination.- 9.5 Delayed Matching to Sample.- 9.6 Target Range Difference Discrimination.- 9.7 Insights from Human Listening Experiments.- 9.8 Summary.- 10 Signal Processing and Signal Processing Models.- 10.1 Analysis of Dolphin Sonar Signals.- 10.2 The Dolphin Modeled as an Energy Detector.- 10.3 Signal Processing Models for Target Recognition.- 10.4 Artificial Neural Networks and Target Recognition.- 10.5 Summary.- 11 Comparison Between the Sonar of Bats and Dolphins.- 11.1 Comparison of Sonar Signals.- 11.2 Comparison of Signal Detection Capabilities.- 11.3 Comparison of Target Discrimination Capabilities.- 11.4 Doppler Compensation and Flutter Detection.- 11.5 Summary.- 12 Road Map for Future Research.- 12.1 Mechanisms of Sound Reception and Hearing.- 12.2 Mechanisms of Sound Production and Transmission.- 12.3 Biosonar Capabilities and Mechanisms.- 12.4 Signal Processing Models.- 12.5 Natural and Dynamic Biosonar Behavior.- 12.6 Concluding Remarks.
1 Introduction.
1.1 Historical Perspective.
1.2 Some Underwater Acoustics.
1.3 The Time and Frequency Domains.
1.4 Experimental Psychological Methodology.
1.5 Signal Detection Theory.
2 The Receiving System.
2.1 The Outer Ears.
2.2 The Middle Ear.
2.3 The Inner Ear.
2.4 Summary.
3 Characteristics of the Receiving System for Simple Signals.
3.1 Hearing Sensitivity.
3.2 Spectral Analysis Sensitivity.
3.3 Directional Hearing.
3.4 Response Bias and Sensitivity in Hearing.
3.5 Summary.
Appendix: Derivation of the Receiving Directivity Index.
4 Characteristics of the Receiving System for Complex Signals.
4.1 Perception of Click Signals.
4.2 Perception of Time Separation Pitch.
4.3 Summary.
5 The Sonar Signal Transmission System.
5.1 Preliminary Examination of Biosonar Signals.
5.2 Sound Production Mechanism.
5.3 Acoustic Propagation in the Dolphin's Head.
5.4 Summary.
6 Characteristics of the Transmission System.
6.1 The Concept of Near and Far Acoustic Fields.
6.2 The Dolphin Near
to Far
Field Transition Region.
6.3 The Acoustic Field on a Dolphin's Head.
6.4 Directional Pattern of Biosonar Signals.
6.5 Equivalent Planar Circular Aperture.
6.6 Summary.
7 Characteristics of Dolphin Sonar Signals.
7.1 Click Intervals.
7.2 Frequency Characteristics.
7.3 Click Source Levels.
7.4 Number of Clicks and Response Latencies.
7.5 Signals from Other Species.
7.6 Summary.
8 Target Detection Capability of the Active Sonar System.
8.1 The Physics of Acoustic Reflection by Targets.
8.2 Noise
Limited Form of the Sonar Equation.
8.3 Biosonar Detection Capabilities.
8.4 Detection of Complex Echoes.
8.5 Comparison Between a Dolphin and an Ideal Receiver.
8.6 Target Detection in Reverberation.
8.7 Summary.
9 Biosonar Discrimination, Recognition, and Classification.
9.1 Mathematical Tools for the Analysis of Target Echoes.
9.2 Target Size Discrimination.
9.3 Target Structure Discrimination.
9.4 Target Shape Discrimination.
9.5 Delayed Matching to Sample.
9.6 Target Range Difference Discrimination.
9.7 Insights from Human Listening Experiments.
9.8 Summary.
10 Signal Processing and Signal Processing Models.
10.1 Analysis of Dolphin Sonar Signals.
10.2 The Dolphin Modeled as an Energy Detector.
10.3 Signal Processing Models for Target Recognition.
10.4 Artificial Neural Networks and Target Recognition.
10.5 Summary.
11 Comparison Between the Sonar of Bats and Dolphins.
11.1 Comparison of Sonar Signals.
11.2 Comparison of Signal Detection Capabilities.
11.3 Comparison of Target Discrimination Capabilities.
11.4 Doppler Compensation and Flutter Detection.
11.5 Summary.
12 Road Map for Future Research.
12.1 Mechanisms of Sound Reception and Hearing.
12.2 Mechanisms of Sound Production and Transmission.
12.3 Biosonar Capabilities and Mechanisms.
12.4 Signal Processing Models.
12.5 Natural and Dynamic Biosonar Behavior.
12.6 Concluding Remarks.
1.1 Historical Perspective.
1.2 Some Underwater Acoustics.
1.3 The Time and Frequency Domains.
1.4 Experimental Psychological Methodology.
1.5 Signal Detection Theory.
2 The Receiving System.
2.1 The Outer Ears.
2.2 The Middle Ear.
2.3 The Inner Ear.
2.4 Summary.
3 Characteristics of the Receiving System for Simple Signals.
3.1 Hearing Sensitivity.
3.2 Spectral Analysis Sensitivity.
3.3 Directional Hearing.
3.4 Response Bias and Sensitivity in Hearing.
3.5 Summary.
Appendix: Derivation of the Receiving Directivity Index.
4 Characteristics of the Receiving System for Complex Signals.
4.1 Perception of Click Signals.
4.2 Perception of Time Separation Pitch.
4.3 Summary.
5 The Sonar Signal Transmission System.
5.1 Preliminary Examination of Biosonar Signals.
5.2 Sound Production Mechanism.
5.3 Acoustic Propagation in the Dolphin's Head.
5.4 Summary.
6 Characteristics of the Transmission System.
6.1 The Concept of Near and Far Acoustic Fields.
6.2 The Dolphin Near
to Far
Field Transition Region.
6.3 The Acoustic Field on a Dolphin's Head.
6.4 Directional Pattern of Biosonar Signals.
6.5 Equivalent Planar Circular Aperture.
6.6 Summary.
7 Characteristics of Dolphin Sonar Signals.
7.1 Click Intervals.
7.2 Frequency Characteristics.
7.3 Click Source Levels.
7.4 Number of Clicks and Response Latencies.
7.5 Signals from Other Species.
7.6 Summary.
8 Target Detection Capability of the Active Sonar System.
8.1 The Physics of Acoustic Reflection by Targets.
8.2 Noise
Limited Form of the Sonar Equation.
8.3 Biosonar Detection Capabilities.
8.4 Detection of Complex Echoes.
8.5 Comparison Between a Dolphin and an Ideal Receiver.
8.6 Target Detection in Reverberation.
8.7 Summary.
9 Biosonar Discrimination, Recognition, and Classification.
9.1 Mathematical Tools for the Analysis of Target Echoes.
9.2 Target Size Discrimination.
9.3 Target Structure Discrimination.
9.4 Target Shape Discrimination.
9.5 Delayed Matching to Sample.
9.6 Target Range Difference Discrimination.
9.7 Insights from Human Listening Experiments.
9.8 Summary.
10 Signal Processing and Signal Processing Models.
10.1 Analysis of Dolphin Sonar Signals.
10.2 The Dolphin Modeled as an Energy Detector.
10.3 Signal Processing Models for Target Recognition.
10.4 Artificial Neural Networks and Target Recognition.
10.5 Summary.
11 Comparison Between the Sonar of Bats and Dolphins.
11.1 Comparison of Sonar Signals.
11.2 Comparison of Signal Detection Capabilities.
11.3 Comparison of Target Discrimination Capabilities.
11.4 Doppler Compensation and Flutter Detection.
11.5 Summary.
12 Road Map for Future Research.
12.1 Mechanisms of Sound Reception and Hearing.
12.2 Mechanisms of Sound Production and Transmission.
12.3 Biosonar Capabilities and Mechanisms.
12.4 Signal Processing Models.
12.5 Natural and Dynamic Biosonar Behavior.
12.6 Concluding Remarks.
1 Introduction.- 1.1 Historical Perspective.- 1.2 Some Underwater Acoustics.- 1.3 The Time and Frequency Domains.- 1.4 Experimental Psychological Methodology.- 1.5 Signal Detection Theory.- 2 The Receiving System.- 2.1 The Outer Ears.- 2.2 The Middle Ear.- 2.3 The Inner Ear.- 2.4 Summary.- 3 Characteristics of the Receiving System for Simple Signals.- 3.1 Hearing Sensitivity.- 3.2 Spectral Analysis Sensitivity.- 3.3 Directional Hearing.- 3.4 Response Bias and Sensitivity in Hearing.- 3.5 Summary.- Appendix: Derivation of the Receiving Directivity Index.- 4 Characteristics of the Receiving System for Complex Signals.- 4.1 Perception of Click Signals.- 4.2 Perception of Time Separation Pitch.- 4.3 Summary.- 5 The Sonar Signal Transmission System.- 5.1 Preliminary Examination of Biosonar Signals.- 5.2 Sound Production Mechanism.- 5.3 Acoustic Propagation in the Dolphin's Head.- 5.4 Summary.- 6 Characteristics of the Transmission System.- 6.1 The Concept of Near and Far Acoustic Fields.- 6.2 The Dolphin Near- to Far-Field Transition Region.- 6.3 The Acoustic Field on a Dolphin's Head.- 6.4 Directional Pattern of Biosonar Signals.- 6.5 Equivalent Planar Circular Aperture.- 6.6 Summary.- 7 Characteristics of Dolphin Sonar Signals.- 7.1 Click Intervals.- 7.2 Frequency Characteristics.- 7.3 Click Source Levels.- 7.4 Number of Clicks and Response Latencies.- 7.5 Signals from Other Species.- 7.6 Summary.- 8 Target Detection Capability of the Active Sonar System.- 8.1 The Physics of Acoustic Reflection by Targets.- 8.2 Noise-Limited Form of the Sonar Equation.- 8.3 Biosonar Detection Capabilities.- 8.4 Detection of Complex Echoes.- 8.5 Comparison Between a Dolphin and an Ideal Receiver.- 8.6 Target Detection in Reverberation.- 8.7 Summary.- 9 Biosonar Discrimination, Recognition, and Classification.- 9.1 Mathematical Tools for the Analysis of Target Echoes.- 9.2 Target Size Discrimination.- 9.3 Target Structure Discrimination.- 9.4 Target Shape Discrimination.- 9.5 Delayed Matching to Sample.- 9.6 Target Range Difference Discrimination.- 9.7 Insights from Human Listening Experiments.- 9.8 Summary.- 10 Signal Processing and Signal Processing Models.- 10.1 Analysis of Dolphin Sonar Signals.- 10.2 The Dolphin Modeled as an Energy Detector.- 10.3 Signal Processing Models for Target Recognition.- 10.4 Artificial Neural Networks and Target Recognition.- 10.5 Summary.- 11 Comparison Between the Sonar of Bats and Dolphins.- 11.1 Comparison of Sonar Signals.- 11.2 Comparison of Signal Detection Capabilities.- 11.3 Comparison of Target Discrimination Capabilities.- 11.4 Doppler Compensation and Flutter Detection.- 11.5 Summary.- 12 Road Map for Future Research.- 12.1 Mechanisms of Sound Reception and Hearing.- 12.2 Mechanisms of Sound Production and Transmission.- 12.3 Biosonar Capabilities and Mechanisms.- 12.4 Signal Processing Models.- 12.5 Natural and Dynamic Biosonar Behavior.- 12.6 Concluding Remarks.