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And they got 1750 people--a fairly large size sample--in different groups. They put them into a theater, a music hall, and they played four pieces of music--the same four pieces
of music for all the people. They randomly--. They did a random test where some of the groups got infrasound in the background, along with the music.
And then they asked everyone if they were emotionally affected by the music. And they found a statistically significant 22 percent of the people were more emotionally affected
Listen to native speakers pronounce “infrasound” as a adj in real conversational contexts with synchronized timestamps and subtitles.
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