active voice contrast

LifeVibes VoiceExperience delivers clear and natural voice calling to all mobile devices. LifeVibes VoiceExperience enhanced speech processing algorithms include improved bandwidth extension and 2-microphone noise suppression in speakerphone mode.

VoiceGurus Blog

Evaluate voice quality on mobile phones.

Latest Press Release

Oppo integrates VoiceExperience into N3 smartphone.

VoiceExperience Videos

VoiceExperience product features on our YouTube or YouKu channel.


Image Map


When taking a call in a noisy environment, it can be almost impossible to understand what the person at the other end is saying. Passing cars, loud machinery and even other people talking nearby can make it impossible to hear clearly.

Of you course you could just turn up the volume, either manually or the phone does that automatically when it detects noise. But that can lead to distortion. So you are still left unable to understand what the other person is saying.

ActiveVoiceContrast in LifeVibes VoiceExperience solves this intelligibility problem. During a call, it continuously senses the audio context at the receiving end – analyzing the type and level of noise around you. It then automatically enhances the incoming voice signal to make it as intelligible as possible for your surroundings.

ActiveVoiceContrast perfectly complements both LoudnessMaximzer and NoiseVoid. While LoudnessMaximizer boosts the overall volume without distortion, ActiveVoiceContrast reacts to the local soundscape, making it the ideal solution for understanding conversation no matter how noisy the environment. Moreover, ActiveVoiceContrast re-uses elements of NoiseVoid to ensure that it reacts only to the audio context around and not your own voice.

End-user benefits

  • Understand the person talking to you no matter how loud your environment
  • Robust against device movements

Device maker benefits

  • Creates maximum contrast between conversation and local noise
  • Code re-use with NoiseVoid reduces memory footprint requirements

Product Overview


  • Noise suppression
  • Echo cancellation
  • Horn suppression
  • LoudnessMaximizer
  • Android pre-integrated
  • Multimicrophone
  • Volume adjustment
  • Supports HD Voice