I recently visited a friend who had just moved into a new apartment and I asked her if I might use her wi-fi password to access the internet while I was there. "Of course," she said. "The number is …" and then she came over to me and started to whisper the code into my ear. On seeing my amazed and somewhat puzzled expression, she gave an ominous nod of her head in the direction of her cell phone on the table. "Google!" she whispered. It took me a moment to understand what she meant: The enemy is listening.

For Porsche it is crucial, that the sound of the AVAS is distinctly Porsche, besides meeting the mandatory legal requirements. However, this does not mean faking the sound of an internal combustion engine. Like the optional Porsche Electric Sport Sound, AVAS represents an iconic Porsche sound for electric vehicles. The sound of a Porsche is its acoustic business card, conveying identity-defining traits such as power and responsiveness. The sound always must be tailored to the vehicle's character to provide a cohesive overall impression and evoke emotions without being perceived as inappropriately loud. Different worldwide regulations and safety standards define a minimum set of requirements to enhance the acoustic detectability of electric vehicles. Moreover, it is required that the vehicle's operating conditions, especially acceleration and deceleration, are acoustically represented. Nevertheless, there are currently no adequate regulatory measurement procedures to objectively capture this subjective perception.