In-Car Communi­­­cation

Easy and relaxed conversations in vehicles

Conversations in a vehicle can be eased significantly by an in-car communication system. Talking passengers are recorded by microphones, the speech-signals are enhanced, amplified and played back over loudspeakers to help the listeners.

Our in-car communication system features:

• Improved conversations with natural speech quality
  • High playback volume due to superior feedback control
  • Reduction of disturbances and driving noise
  • Spatial speaker localization is preserved
• Support for different car models (sedans, vans, convertibles)
• Arbitrary configuration of
  • Seats (talking/listening zones)
  • Microphones and loudspeakers
• Scalability in terms of algorithmic complexity
• Easy configuration and system setup

Acoustic feedback control

• Feedback cancellation
• Feedback suppression
• EQing strategies
• Time-variant methods

Signal Enhancement

• Microphone combination techniques (beamforming, automatic SNR-based selection)
• Noise reduction for stationary and instationary sources

Signal distribution

• Adaptive mixing and zoning
• Automatic gain control
• Voice-activity-dependent loss control
• Noise-dependent gain control
• Full-duplex communication

Pre- and post-processing

• Loudspeaker and microphone equalization
• Dynamics: Limiter, compressor, de-esser, etc.
• Signal conditioning based on psychoacoustic criteria

Add-Ons

• Hands-free integration with echo cancellation and barge-in support
• Development of customer-specific algorithms
• Inject your own signal processing algorithms anywhere in our signal-chain for your custom demands.

Supported platforms

• ARM
• DSP (e.g. Analog Devices SHARC)
• PC (Windows, Linux, macOS)

Your desired platform is not yet listed? Feel free to contact us and we will find a solution.