Sounds gathered are analyzed at the Listening Lab, a research collaborative between the NPS and the Sound and Light Ecology team at Colorado State University. Technicians study these sounds using spectrograms — images that display the sounds according to brightness and color, frequency, and time of occurrence (see graphic, right).The audio recordings provide information about their source of origin, such as wildlife, weather, park visitors, and park operations, and how these variables interact. Visit Measuring Sound to learn more about how the NPS measures and analyzes sounds. This list of available reports summarizes sound measurements taken in national parks.
The following sound clips are selections of wilderness and human-made sounds recorded in national parks.The files are in the public domain and may be downloaded. Enjoy, and please give the appropriate credit.
Enjoy perusing these additional sound libraries:
- Sounds of the Parks by the Colorado State University Listening Lab.
- Yellowstone National Park Sound Library and Yellowstone Audio postcards — short stories about soundscapes unique to Yellowstone's ecology.
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- 84 synonyms of sound from the Merriam-Webster Thesaurus, plus 142 related words, definitions, and antonyms. Find another word for sound.
- Spacesounds we are listening.
- Find the best of Sound Effects in Myinstants! Myinstants is where you discover and create instant sound buttons.
- Free printable resources for the Letters and Sounds phonics programme. High quality, bright and colourful printable resources designed to appeal to children, plus free online games linked to the Letters and Sounds phases for teaching reading.