Inside the vehicle lab, Amazon scientists use software and acoustic tools to simulate road noise, music, and other acoustic elements as they test and validate Alexa integration with the car manufacturer’s built-in systems. Manufacturers can also deploy various noise reduction algorithms, which learn to separate a speaker’s voice from other background noise. To invoke Alexa, the car’s microphones need to pick out the speaker’s voice from this din and send the voice signal to the automatic speech recognition model running in the cloud.Ĭombining psychoacoustics, signal processing, and speaker beamforming enhances stereo audio and delivers an immersive sound experience for customers.Īnother recommended technique called acoustic echo cancellation blocks out the noise from the car’s speakers so that music played by the speaker does not interfere with the customer requests. Think of the rumble from tires on the road and turbulence from the wind, as well as whatever radio station, podcast, or music is playing through the stereo. Perhaps the biggest difference between speaking to Alexa in a car versus at home is the increase in noise, Liu noted. “We make sure that the integration of our technology with their device is correct and happily working.” “We are giving our partners access to Alexa services and functionalities, but we don’t make the device,” explained Parimal Tathavadekar, a senior manager on the Amazon Smart Vehicles team. Amazon scientists often work with car manufacturers on the design and implementation of their systems, but during validation in the 6,000-square-foot vehicle lab, there is one element they cannot control for. There’s another complication: the hardware.

Dataset that requires question-answering models to look up multiple facts and perform comparisons bridges a significant gap in the field.

Car ecu tuning software amazon