The Pulse
Treble Raises $18M to Bring Acoustic Simulation to Physical AI
Treble Technologies has raised $18 million to expand its acoustic simulation and synthetic audio platform for physical AI applications, including robotics, wearables and autonomous vehicles.
AI.info Team ·
Physical AI Has a Hearing Problem
Machines are learning to see and act in the physical world, but sound creates a harder testing problem. Reverberation, background noise, room materials, microphone placement and device movement can all change what an audio system hears.
Treble Technologies, an Icelandic company developing acoustic simulation and synthetic audio tools, is betting that physical AI developers will need digital versions of those conditions before they can build reliable voice-enabled products. The company announced on September 17, 2026, that it has raised $18 million, approximately €15 million, in a Series A-2 round led by Paladin Capital Group.
Existing investors KOMPAS VC, Frumtak Ventures and the European Innovation Council Fund also participated. The financing brings Treble’s total funding to €36 million, according to the company.
Paladin Backs Sound for Robots and Devices
Treble says it will use the funding to expand in the United States, grow its audio-enabled product business and increase its focus on physical AI. Target applications include wearables, head-worn devices, humanoid robots and autonomous vehicles.
Paladin sees a gap between systems that can identify objects visually and systems that can interpret events outside their field of view. “Paladin predicts that robotics will drive a profound wave of automation across the physical world,” said François Ruether, vice president at Paladin Capital Group. “Yet today’s robots are largely limited to visual perception: they may detect what is in front of them but cannot interpret critical sounds - such as someone falling in another room or a crash around a corner.”
Ruether said Treble’s platform is designed to help physical AI models combine visual and auditory inputs. He added that understanding speech in acoustically complex environments remains difficult even before robots must respond to sounds beyond direct line of sight.
Treble Replaces Some Physical Testing With Digital Rooms
Treble’s platform combines acoustic simulation, digital twins and synthetic data generation. Its software models how sound moves through spaces containing different rooms, materials, vehicles, devices, speakers and ambient conditions.
The approach lets development teams create digital acoustic versions of real-world environments and test a product or model before building physical prototypes or arranging large recording programs. Treble says teams can generate consistent, labeled datasets, test unusual conditions that are difficult to reproduce in person and compare product configurations under controlled circumstances.
The company says that work can reduce prototype testing and data collection efforts from months to days. Its technology is based on physics-accurate acoustic modeling, which aims to reproduce how sound physically travels through space rather than relying only on recordings or simplified effects.
Treble also says its platform can help companies evaluate audio performance across changing room layouts, background noise and microphone positions. Those conditions matter for products that must understand speech while moving or operating around people.
Amazon Uses Virtual Acoustic Environments for Alexa
Amazon and Logitech are among the companies Treble identifies as collaborators. Amazon uses virtual acoustic environments during several stages of Alexa development, according to Wontak Kim, senior audio research manager at Amazon.
“In many stages of developing Alexa as an AI assistant, we rely on virtual acoustic environments to accelerate product design and model development. Treble provides an accurate and scalable way to model those environments. It allows us to virtually assess audio quality and performance and evaluate scenarios that are difficult to reproduce through physical testing alone. Its platform and expertise have made Treble a trusted partner and a valuable extension of our team.”
Wontak Kim, Senior Audio Research Manager, Amazon
Treble’s work with device manufacturers reflects a broader shift in audio development from testing finished hardware toward simulating products, environments and models together. A smart speaker, pair of headphones or wearable device can behave differently depending on where it sits, how a user moves and what other sounds surround it.
A Reykjavík Company Moves Beyond Traditional Acoustic Design
Treble was founded in Reykjavík by acoustic engineers Finnur Pind and Jesper Pedersen. The company describes its platform as a cloud-based system for sound simulation, acoustic digital twins and synthetic audio data generation.
“Audio and voice interaction is becoming a fundamental interface for the next generation of intelligent products, but the physical world is acoustically complex,” said Finnur Pind, Treble’s co-founder and chief executive. “AI models and devices that perform well in a laboratory can struggle when they encounter reverberation, background noise, or an unfamiliar physical environment.”
Treble’s funding will support its expansion into product categories where machines must hear while operating in changing physical settings. The company’s immediate proposition is specific: let developers model those settings digitally, generate data from them and test audio systems before relying on physical recordings and prototypes.