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๐ง Simultaneous Tone Counting Test: Auditory Resolution
Between two and five pure tones sound together for about two seconds and you simply choose how many there were. Each round packs the tones closer on the ear's own frequency scale, so they fuse more and more into a single sound, and the count is drawn fresh every round so no order can be memorised. The total loudness stays the same no matter how many tones play, so volume never gives the number away. It is the hearing counterpart of taking in a handful of dots at a glance: how many strands your ear can pull out of one sound.
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๐ก How to play โ Between two and five pure tones sound at the same time for just under two seconds. Say how many there were. Each round packs the tones closer together on the ear's own frequency scale, so they blend more and more into a single sound. The total loudness is identical no matter how many tones are playing, so volume never gives the count away, and the number is drawn fresh at random every round. A wrong answer costs a third of what a right one pays, so guessing is worth exactly nothing on average. 16 rounds, no replays. Headphones and a quiet room are strongly recommended.
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