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Motor Racing Vehicles - Measurement Methods

4 Functional requirements

The new methods shall be simple and easy to use, and have an acceptable low measurement uncertainty. Specifically the following requirements shall be aimed at:

4.1 Declaration method:

• Immission relevant sound power level per 1/1-octave frequency bands.
• Best possible agreement with results obtained with the existing method No. 3, which a priori is defined as giving a correct immission relevant noise emission.
• Applicable for all relevant vehicles.
• Relatively simple ground correction.
• Ability to use for non-high level experts.

4.2 Monitoring method

• Immission relevant A-weighted sound power level.
• Agreement with results from the declaration method.
• Applicable for all relevant vehicles.
• Simple ground correction.
• Ability to use for non-experts during training and race events.

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