This Article on Automotive Acoustics has kindly been supplied by our valued supplier Dewesoft. For more information, contact us
The sound makes the music – measurement technology from Dewesoft sets the tone. A good engine sound is tuned to the vehicle type and engine type. The automotive industry leaves nothing to chance. The manufacturers of exhaust systems are currently working more than ever on Automotive Acoustics. On the other hand, the still silent electric vehicles must first be equipped with the right acoustics – also, because the legislature wants it that way.
Automotive Acoustics – Vehicle Alerting System (AVAS)
The time of silence seems over: Because the legislators worldwide have responded to the “whisper cars” – electric, fuel cell and hybrid vehicles must be equipped from mid-2019 with a so-called “Acoustic Vehicle Alerting System (AVAS)”. From mid-2021, also the older models will be retraced – from then on, they may only be sold with the system. Not only due to new legislation, the sound design is a major topic in the automotive industry. For example, the manufacturers of exhaust systems work on whole sound databases for a variety of products. One of the largest European specialists in this field is supported by Dewesoft.
Connection with SIRIUS
In particular the in-house research of our customer uses Dewesoft measuring instruments. To measure sound transmission losses, exhaust gas pressure pulses, vibrations, temperatures and experimental modal analysis. As well as internal and external sound. Specifically, the customer uses a wide range of sensors for strain, temperature, vibration and sound – these are combined with the Dewesoft SIRIUS measuring instrument. The OBDII (CAN) is used to detect the engine speed, speed, throttle and damper flap position of the car engine.
Characterisation of the exhaust system
Our measurement technology enables the customer to use scientific approaches to characterize the sound design of the exhaust system. The efficiency of each acoustic element is analyzed. Disturbing effects (such as whistling and rumble) of the whole system are localised, analysed and eliminated. Dewesoft offers a turnkey solution to develop, enhance and customize an excellent sound design.