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Heartbeats. Vintage recording.
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A heart monitor in a hospital beeping three times.
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Intense and vibrant heartbeat with deep airy breathing.
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Deep, steady heartbeat.
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Fast heartbeat at 96 bpm
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Slow Heartbeat at 55 bpm
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Heart rate measured via oscilloscope's laser reflection with beeps and buzzes.
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slightly tinny sounding medium slow heartbeat rhythm 57 bpm