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2. Noise, vibration, and harshness - Wikipedia

   en.wikipedia.org/.../Noise,_vibration,_and_harshness

   Noise, vibration, and harshness (NVH), also known as noise and vibration (N&V), is the study and modification of the noise and vibration characteristics of vehicles, particularly cars and trucks. While noise and vibration can be readily measured, harshness is a subjective quality, and is measured either via jury evaluations, or with analytical ...

3. Laser Doppler vibrometer - Wikipedia

   en.wikipedia.org/wiki/Laser_Doppler_vibrometer

   Architectural – LDVs are being used for bridge and structure vibration tests. [4] Automotive – LDVs have been used extensively in many automotive applications, such as structural dynamics, brake diagnostics, and quantification of Noise, vibration, and harshness (NVH), measurement of accurate speed. [5]

4. Acoustic quieting - Wikipedia

   en.wikipedia.org/wiki/Acoustic_quieting

   Sound reflections: by limiting the reflection using many methods, e.g. by using acoustic absorption (deadening) materials, trapping the sound, opening a "window" to let sound out, etc. By analyzing the entire sequence of events, from the source to the observer, an acoustic engineer can provide many ways to quieten the machine.

5. Escorts Kubota Limited - Wikipedia

   en.wikipedia.org/wiki/Escorts_Kubota_Limited

   The centre designs tractors. It has facilities such as an engine laboratory that has computerised test beds with online control, data acquisition, and analysis; an advanced vehicle testing laboratory; a noise vibration and harshness lab; a metrology lab; and a materials engineering lab. [23]

6. Automotive engineering - Wikipedia

   en.wikipedia.org/wiki/Automotive_engineering

   NVH engineering (noise, vibration, and harshness): NVH involves customer feedback (both tactile [felt] and audible [heard]) concerning a vehicle. While sound can be interpreted as a rattle, squeal, or hot, a tactile response can be seat vibration or a buzz in the steering wheel. This feedback is generated by components either rubbing, vibrating ...

7. Chassis dynamometer - Wikipedia

   en.wikipedia.org/wiki/Chassis_dynamometer

   There are many types of chassis dynamometer according to the target application - for example, emissions measurement, miles accumulation chassis dynamometer (MACD), Noise-Vibration-Harshness (NVH or "Acoustic") Application, Electromagnetic Compatibility (EMC) testing, end of line (EOL) tests, performance measurement and tuning.