Why do engine exhaust sounds get louder and higher pitched as RPM’s increase?

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Also, does exhaust pitch stay the same, given the same RPM but in different gears? I ask because it sounds like pitch decreases as you go into higher gears.

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Anonymous 0 Comments

To the different gear question, a lot of it has to do with engine load. An engine free spinning requires a lesser air fuel ratio in the combustion chamber than an engine starting out in first gear. Likewise, the engine load changes when the gear ratio does

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