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4. Bearing
In this paragraph, we are interested in the phenomenon of "cooing", where the transmission plays a direct and indirect role, the excitations coming from both the engine and the transmission, the latter acting on the phenomenon through its own modes of vibration. .
4.1 Subjective perception
Growl noise is a modulated noise whose modulation frequency varies with vehicle speed (unlike H 2 /R 6 beat). It can be present in all gear ratios, and is particularly...
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Bearing
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