BAT – Audio IP Platform  

Our fully flexible and application-optimized solution to enable high-fidelity ADC / DAC audio IP and voice-control of IoT devices at low power cost.

BAT is our audio IP platform for serving a wide range of fashionable applications such as Smart Speakers, Smart Headsets, ANC Earbuds, and In-Vehicle Infotainment. It embeds ADC / DAC audio IP digital filters, voice detection, and keyword spotting solutions based on a broad range of process node expertise. 

BAT enables a seamless configuration and assembly of your high fidelity and low power audio device ensuring faster Time-To-Market with a stronger market position.

BAT - At the crossroads of analog performances and digital adaptability

ANALOG making the interface between analog and digital worlds  very high fidelity

  • MEMS microphone and electret support
  • High electrical performances for accurate data recording and payback
  • Cap-less architecture to limit BoM impact

DIGITAL enabling powerful audio signal processing with soft flexibility

  • Digital microphone support
  • Hardware filters for optimum energy efficiency
  • Various features to adapt to application constraints
  • High configurability

Audio IP platform portfolio

Active Headphones

We enable noise-cancellation to fully offset the effect of distracting and concurrent activity, dramatically improving audio rendering.

Smart Speakers

We reduce the power consumption of always-on smart speakers with our swift voice detection solutions.

In-vehicle Infotainment

We improve the reliability of voice-control functions with our highly noise resilient converters.

Applications

  • TWS earbuds, headphones and headsets
  • AR/VR
  • Smart speakers, home appliance
  • Wearables, hearables, Voice first devices
  • BLE codecs
  • LP and GP MCU

Key figures

  • 8μA in Voice Detection mode
  • 100% voice detected
  • 106 dB SNR ADC
  • 119 dB SNR DAC
  • < 8μs latency mic input to HP output
  • Up to 768 kHz sample rate​​

Remove distractions. Augment your sound experience.​​

Ultra low latency audio converters down to 3µs

Active Noise Cancellation allows for listening to audio content without raising the volume excessively. We provide a powerful set of converters to make high-fidelity ANC possible.

 

  • ADC with Dynamic Range higher than 104 dB maintaining audio performance in analog mic-in mode
  • Pop-up noise level as low as – 60 dBV

Ultra efficient and accurate voice command detection. Wake up when effectively required.

Audio CODEC with embedded Voice Detection

The built-in microphones in smart speakers are continuously listening for “hot keywords” followed by a command. In order to maximize the sleep state mode timeshare to limit the system power consumption, we designed audio CODEC solutions with voice activity detection capability, the Whisper Trigger IP.

  • Enables ultra low power keyword spotting mode
  • High Dynamic Range – up to 100 dB – to perform far-field voice recognition

Accurate sound processing. Reliable voice interaction.

Audio CODEC with high Noise Resilience

Engage seamless in-vehicle voice command and response interactions with robust noise tolerance in high temperature environment.

  • High CMRR enabling in-vehicle distributed mic positioning
  • Low crosstalk multi-channel CODEC
  • Embedded low noise voltage regulator for enhanced resilience to power supply related noise
pdf

Download our white paper on Voice Activity Detection (VAD)

More than ever before, the attention to power consumption is paramount when developing new products. In this environment, voice activity detection has a major role to play for any new voice-controlled system. The main objective of VAD is to lower power consumption, saving on computation or data processing by deactivating part of the SoC when no speech patterns are detected.
Markets like home assistants and telecommunications can greatly benefit from this feature as the
always-on mode is not exactly suitable for wireless products or when privacy is a concern.

  1. Different VADs and how to compare them
  2. What does the market offer at this point?
  3. WhisperTrigger Voice Activity Detector

Looking for an AIoT systems to address energy efficiency challenges

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