Voice is rapidly becoming the most natural interface between humans and machines, but real-world environments are rarely quiet, predictable, or controlled. From bustling public spaces to industrial settings and outdoor installations, delivering reliable voice performance remains one of the biggest challenges in modern product design.
That’s where the new VocalFusion® XVF3620 comes in.
Designed to handle noisy, dynamic, and reverberant environments, the XVF3620 is XMOS’ latest high-performance voice processor, bringing together advanced AI, robust signal processing, and flexible integration in a single, cost-optimised solution.
Built for noisy, changing environments
Traditional voice systems often struggle when background noise becomes unpredictable, think machinery, wind, traffic, or even sudden sounds like clicks or barking dogs.
The XVF3620 addresses this with AI-based noise reduction that actively suppresses unwanted sounds while preserving speech clarity. Unlike static filtering approaches, the AI models can be tuned for specific use cases or Automatic Speech Recognition (ASR) engines, enabling optimal performance whether the goal is speech recognition or human communication.
This makes it ideal for:
- Public or high-traffic environments
- Outdoor intercom systems
- Smart home devices in busy households
- Industrial assistants and robotics
Clear conversations with full-duplex audio
In many voice-enabled systems, echo is the silent killer of user experience, especially in full-duplex scenarios where users speak while audio is playing.
The XVF3620 integrates fast-adapting acoustic echo cancellation (AEC) that continuously adjusts to environmental changes. This ensures:
- Reliable barge-in performance
- Stable communication even as rooms or positions change
- Clean separation of playback and microphone signals
Combined with residual echo filtering, the result is natural, interruption-free conversations.
Smarter voice capture with beamforming
At the front end, the XVF3620 uses two-microphone beamforming to focus on the speaker’s voice while rejecting surrounding noise.
With support for flexible microphone spacing and array configurations, designers can optimise capture performance across a wide range of product form factors, from compact smart appliances to larger industrial systems.
A complete voice processing pipeline – on chip
One of the biggest advantages of the XVF3620 is integration.
Instead of requiring multiple components or external DSPs, the device includes a complete digital voice processing pipeline, including:
- PDM-to-PCM conversion
- Beamforming
- AI denoising
- Multiband compression and equalisation
- Automatic gain control (AGC)
This reduces system complexity, BOM cost, and development time, while ensuring consistent, high-quality audio performance.
Performance that scales with your product
The XVF3620 combines a powerful scalar pipeline with a vector processing unit (VPU), delivering the compute needed for advanced audio workloads.
This enables:
- Ultra-fast convergence for real-time processing
- High-throughput FFT and complex arithmetic
- Efficient handling of AI-driven audio models
The result is a platform that not only performs today but is ready for evolving voice and AI requirements, including LLM-based interfaces.
Flexible integration for faster time-to-market
The XVF3620 is designed to fit seamlessly into a wide range of system architectures.
Key integration options include:
- Audio interfaces: USB (Audio Class 1 or 2) or I2S
- Control interfaces: USB or I2C
- Operating modes: USB Accessory Mode or Integrated Mode
This flexibility allows developers to adapt the device to their specific product requirements, without redesigning their entire system.
Enabling the next generation of voice interfaces
As voice interfaces expand beyond the living room into more complex and demanding environments, the need for robust, intelligent audio processing has never been greater.
The XVF3620 delivers:
- Reliable voice capture in real-world conditions
- AI-enhanced clarity for both communication and recognition
- A compact, integrated solution that accelerates development
Whether you’re building a smart appliance, an industrial robot, or an outdoor intercom system, the XVF3620 provides the foundation for voice experiences that simply work, wherever they’re deployed.
