What is the room equivalent absorption area?
Definition The room equivalent absorption area, , is used to characterize the acoustic absorption capacity of a room. The acoustic absorption of a given room is linked to its wall […]
Tag: acoustics
What is acoustic loudness?
Context There are differences between sound parameters we measure physically and the sound perception we have as humans. For instance, we are used to describe the loudness of a sound […]
What is sharpness?
Definition Sound perception is a subjective phenomenon depending on both physical and cognitive factors. The aim of psychoacoustics is to better understand the human perception of sound and improve Sound […]
What is tonality?
Definitions A tone is a sound composed of a single frequency component. Sounds we hear can be either pure tones (e.g. a whistle in a quiet background), or a combination […]
What is psychoacoustics?
Context Hearing is a cognitive phenomenon : auditive perception can be improved with experience, but it can also diminish with age, hearing fatigue or traumatism. Perception varies from a person […]
What is masking effect?
Definition Some sounds may no longer be perceived when combined with an additional sound: this effect is called masking. There are two forms of masking : spectral and temporal. Spectral […]
[ISEF 19] NVH simulation of e-motors, numerical challenges and application with Manatee software
EOMYS presented at ISEF 2019 held in Nancy (FR) on 30th August 2019 a presentation on numerical challenges of vibroacoustic simulation of electrical machines, including application with MANATEE software (V1). […]
Noise of electric vehicle powertrain (EV HEV NVH) – case of Tesla X90D
Summary of e-NVH sound sample Application Tesla® X90D (EV HEV NVH) Electrical machine SCIM Supply condition Run-up at max torque Noise sources Electromagnetic, mechanical, aerodynamic See also Nissan Leaf, Renault […]
What is the difference between Sound Pressure Level (SPL) and Sound Power Level (SWL)?
Definition In acoustics, Sound Power Level (SWL) characterizes the intrisic acoustic power of an acoustic noise source, whereas Sound Pressure Level (SPL) characterizes the acoustic noise level observed at a […]