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Engine sound enhancement system of a vehicle

  • US 9,686,611 B2
  • Filed: 01/04/2016
  • Issued: 06/20/2017
  • Est. Priority Date: 01/13/2015
  • Status: Active Grant
First Claim
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1. A sound enhancement system for an engine of a vehicle, the vehicle having a compartment for a driver and a passenger, the engine having a casing, the sound enhancement system comprising:

  • a sound sensor that senses a sound of the engine and generates an electrical signal indicative of the sensed sound,a signal processor connected to said sound sensor so as to process the electrical signal to generate an output audio sound; and

    a speaker adapted to be disposed in the vehicle compartment, wherein said speaker is connected to said signal processor so as to receive the output audio sound and to generate an enhancement sound relative to the sound of the engine, wherein said sound sensor is a vibration sensor adapted to be disposed on the casing of the engine to detect vibrations of the engine casing that generate the sound of the engine and wherein the electrical signal is a vibration signal of the engine casing, and wherein said vibration sensor is a shaker or an exciter-type mechanical electrical transducer that has a fixed part firmly coupled to the engine casing and a mobile part that moves with respect to the fixed part when the engine casing has a vibration alteration so that the vibration sensor can detect a vibration speed of the engine casing, said vibration sensor acting as an accelerometer integrator or a velocimeter.

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