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This audio recording is a perfect illustration of the Doppler effect, specifically in relation to the sound produced by a motorcycle. It starts with the distant, low hum of a motorcycle engine, gradually building in intensity. The listener can perceive the motorcycle approaching, as the engine's noise intensifies, embodying the raw power and speed of a racing motorcycle. The sound then peaks as the motorcycle seems to pass directly by the listener, the engine's roar at its loudest and most visceral. This is the moment when the Doppler effect is most evident. The frequency of the sound increases as the motorcycle approaches and then decreases as it drives away, creating a shift in the pitch of the sound heard. As the motorcycle recedes into the distance, the engine's growl begins to fade, becoming softer and lower in pitch. The rapid, high-intensity sounds of the motorcycle driving away encapsulate the essence of the Doppler effect. The entire audio recording immerses the listener i
