Prepare to feel relaxed, tingly and amazed all in the space of 20 minutes. This episode is all about sound. We start with the musical tones of an elephant trumpeting, followed by a recording from Cornell University’s Elephant Listening Project, showing how they communicate at an infrasonic frequency, which humans can’t ordinarily detect. The team then attempts to send shivers down your spine by recreating ASMR, explaining why some people enjoy the sound of whispering, rustling crisp packets or apple biting. They also share a range of audio illusions, and close the show with the soothing sounds of white noise, created by Stephane Pigeon from www.mynoise.net. Shepard Tone and Binaural Beats courtesy of Alexander from www.orangefreesounds.com under the Creative Commons Attribution 4.0 International License. On the pod are Rowan Hooper, Bethan Ackerley and Timothy Revell. Find out more at newscientist.com/podcasts

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