Active Sound System Legal

The CARGRAPHIC Active Sound control unit is connected to the CAN bus of the respective vehicle. It continuously monitors the current state of charge of the engine and, on this basis, generates a suitable V8 sound, which is reproduced via the connected CARGRAPHIC Active Sound actuator. The different sound variants can be adapted to your tastes and called via the vehicle`s driving profiles, such as AUDI Drive Select, BMW Driving Experience Switch or Mercedes Agility Control – alternatively, the button on the automatic start-stop system or the ESP button can also be used to change the sounds. Instead of playing fake sounds, Porsche uses a Sound Symposer system to “amplify” engine noise. The Sound Symposer consists of a pipe that houses a valve and a diaphragm. The De Ford brand for active sound design is called “Active Noise Control”. As with most automakers, Ford does not explicitly state that the ANC system produces simulated engine noise. Lexus has used sound design techniques for models other than the LFA supercar. The reason for this is that the Stinger system can breathe freely, which increases the exhaust noise of the car.

A sound system must not only be installed by a quality mechanic, but there are also certain limits to the usable volume of a sound system. Sound systems usually can`t be in a disturbing voice, especially in residential areas. A sound generator in which the sound of the engine is modified by artificial noise without affecting consumption or emissions has been banned since 2018. Verkehrsblatt 5/2018 indicates that the Federal Ministry of Transport no longer grants component approval for such devices in the modernization sector. According to the Federal Ministry, the systems contradict the requirements of § 30 sec. 1 no. 1 StVZO. Since then, the certificates of parts in accordance with § 19 and the obtaining of the general operating permit in accordance with § 22 have no longer been issued.

In addition, acceptance according to §21 StVZO is no longer possible. Why were you so consistent? In the past, many tuned vehicles had such a high noise level by means of a loud actuator that even the maximum permissible index of 75 decibels for a vehicle of 272 hp per tonne was exceeded. However, already legally approved systems as well as sound generators for electric cars and factory-installed systems for diesel vehicles (e.g. Audi A6 C7 TDI) are excluded from the ban on sound generators. And since July 1, 2019, new types of vehicles with electric and hybrid propulsion must generate a warning noise of 0 to 20 km/h – to protect pedestrians and cyclists. You can do this with a sound generator. As we know, noise generators are already banned by the Department of Transport. Why and why this is so, we have already discussed in the article “Without words: the modernization of sound generators is now prohibited”. And while there is still no blanket ban on flap exhaust systems, stricter regulations have been in place since 2018 due to European noise regulations. Valve exhaust systems (variable geometry silencers) are one way to reduce engine noise pollution. You can adjust the sound and volume according to engine speed and speed.

Saar Environment Minister Reinhold Jost had planned to ban noisy exhaust systems in October 2018. According to him, the flap exhaust has “no other function than to produce a distinctive noise of the vehicle or unnecessary deafening noises”. That is why it was recommended that the federal government at the time use flap exhaust systems, which are prohibited by law. So far, this is (fortunately), but it is not yet clear whether this proposal will be adopted at national level. It combines noise cancellation techniques with acoustic modifications to create new vehicle sounds. For example, the ASD system of some cars can produce false sounds that mimic the growls of the engine. Volkswagen was one of the first users of Active Sound Design technology and named its ASD system “Soundkator”. For example, the IS 250 F Sport uses an intake sound generator to create a more gorgeous engine sound. The CARGRAPHC Active Sound System is available in two versions: either as a DIY kit, which allows universal installation as a so-called DIY system – without modification of the standard exhaust system.

With an active audio system, on the other hand, the volume is infinitely adjustable and can also be turned off – so it`s up to everyone to decide how “legal” it is currently on the road. Manufacturers can continue to install sound generators in ex-factory vehicles.