Recording

transcript

Recording1. The hydrophone and

headphones were both plugged into a cassette tape recorder2. The hydrophone was

submerged into water and then left under water for an hour,

while recording3. The recordings were uploaded,

segmented, and then made into spectrograms

4. Duplicated segments were filtered, and/or amplified (if

needed)

Some instruments used:

Results

Anthropogenic and Bioacoustic sounds

Anthropogenic & Bioacoustic Recordings

Anthropogenic sounds

biological sounds

Spectrogram of the Striped Cusk Eel

Spectrogram of Oyster Toad Fish

Circle Line

Water taxi

Motor Boat

Jet-Ski

Zephyr

Fire boat

Discussion

Frequencies of Sounds in the Hudson

Conclusion

• Many anthropogenic sounds and bioacoustics sound have been recorded as a range of frequency, instead of at one particular pitch

• Higher amplitudes can not only confuse fish, but even change their behavior

References • Clark, April 10th, 2000 “underwater noise”• Costa, Hayes, December 13th 2001, “underwater acoustics pollution”• Dr. Rountree- Fish Ecology- Listening to Fish• Fay Edds –Walton, October”, 2000, “Frequency response of auditory brown

stem units and toadfish (opsanas tan)• Haynes,frisch- “an illustrated guide to Hudson River Fish- March 1993• Parker-MC Graw Hill Dictionary of scientific and technical terms 1994• Poland fish, Marie. “the production of underwater sound by the northern

seahorse, hippocampus hudsonias. Copeia, vol. 1953, No.2 (May,29,1953) pp 95-99

• Stanne, Panetta,” The Hudson- an illustrated guide to the living river.(1996)• Wenz, G.M. 1962. “Acoustic Ambient Noise in the Ocean: Spectra and

Sources. Journal of the Acoustics Society of America”, 34,1936-1959

Acknowledgements• Cathy Drew• J.T. Boehm

• Jedtsada Laucharoen• Alex Harding

• Chris Anderson• Dr. Sat

Harlem Children Society

• Memorial Sloan Kettering Cancer Center• Mr. Edward Irwin (Freeport High School)

• Ms. Thompson ( Gregorio Luperon High School)

And you for listening!

Thank you!

Recording

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