Design of ESP-VoCat — Hardware Products with Kyler

Opportunity Arises from the Toughest Limitations

“Form follows function” is a principle we all know, but what happens when form and function seem to be at odds, staring each other down across the sketchpad?

That was our challenge with ESP-VoCat, an AI desktop robot co-developed with Volcano Engine. We envisioned a small, spherical device with a circular LCD. Sleek, minimal, and expressive.

But then came the catch.

To support beamforming and far-field voice recognition, we needed two microphones spaced at least 4 cm apart. But the face is fully taken up by the LCD panel. As an engineer, the practical answer was obvious — to just let them stick out. Functional, yes. But the form? Compromised. The charm? Gone.

So I switched gears, from engineer to designer.

Rather than fight the constraint, I asked: what if we embraced it? Microphones are for hearing. What hears? Ears. And ears can naturally protrude from a body, especially if that body is a sphere. Maybe even something playful, like cat ears.

Suddenly, the challenge turned into an opportunity.

From Constraint to Character

From this pivot, ESP-VoCat was born. What began as a limitation turned into the product’s defining feature. The dual microphones became “ears” — not just for function, but for identity. They elevated the aesthetic while clearly telegraphing the robot’s auditory capabilities. ESP-VoCat retained its clean, minimal silhouette, but now with a spark of personality and warmth.

In the end, we didn’t settle for form following function, or function following form. We found a way where each elevates the other. Perhaps that is what good design is all about.

Opportunity Arises from the Toughest Limitations

From Constraint to Character

Further Reading