Guidance Needed: Tuning XVF3800 for Hospital Room (Shared Space) Patient–Nurse Communication Hardware

[Prasaanth]

Hello XMOS Community,

I’m currently developing a hardware solution for nurse–patient communication in hospital rooms (~15x15 ft), similar in concept to a conference room audio system. The goal is to enable clear, hands-free, two-way audio where the nurse can hear the patient clearly—without ambient noise, room echo, or muffling.

After some research, I selected the **XVF3800** as the core audio processor since it provides the essential features like **AEC, beamforming, noise suppression, and voice activity detection**.

I’ve validated the **default reference binary**, but the performance doesn’t meet the needs for a shared-space environment. Later, I learned that the default binary is tuned for *personal space* use cases (e.g., smart speakers or near-field). I understand that **it’s our responsibility to tune the XVF3800 firmware** according to the specific room acoustics, microphone/speaker configuration, and mechanical design, and that there’s no general-purpose binary available for this.

I’ve reviewed the datasheet, user manual, and tuning guide and have a fair conceptual understanding of the processing chain and tunable parameters. However, since I’m relatively new to audio DSP and acoustic tuning, I’m not sure about the **standard steps, recommended tools, and best practices** to follow when tuning the XVF3800 for a room-scale environment like this.

Could anyone please guide me on:

1. The **recommended workflow or tuning process** for adapting the XVF3800 to a shared-space (conference room–like) scenario.
2. The **measurement tools/software** typically used to evaluate and tune beamforming, AEC, and noise suppression performance.
3. Any **reference designs, application notes, or example binaries** closer to a far-field or shared-space configuration.
4. Tips or lessons learned from others who have deployed XVF3800 (or similar XMOS parts) in larger room environments.

Any guidance or resources would be extremely helpful — even a high-level workflow would give me the right direction.

Thank you in advance for your time and expertise.

Best regards,
Prasaanth

[MichaelB]

Hello Prasaanth,

Thanks for the questions.

The Tuning the Application section of the XVF3800 User Guide[https://www.xmos.com/documentation/XM-0 ... ation.html] describes a detailed process for tuning the XVF3800. Regardless of the size of the room into which the XVF3800 will be deployed, I recommend that you go through that tuning process. The XVF3800 firmware also includes a set of software tools to process the measured values.

It's important to work through the tuning process in the order shown in the documentation. Numerous people have discovered that jumping around and altering the tuning parameters in an arbitrary order does not produce good results.

Kind regards,
Michael