The Newcastle-based translation service raised the funds from NEL Fund Managers to drive marketing activity for its new visitor app.
"We’ve spent a lot of time ensuring that the app is fully fit for purpose and now have a fantastic product that will make a real difference to the user experiences that museums and other such venues can offer their visitors."
The investment round was led by AlbionVC with backing from IQ Capital.
"We’ve invested heavily into our product and machine learning capabilities to provide our customers with what we believe is the best speech recognition technology on the market. We recognise that businesses are increasingly aware of the importance of unlocking their voice data and utilising it for core business functions such as compliance, analytics, training and improving customer experience. This latest investment opens up not only global expansion but the opportunity for new product development and traction in new markets."
National Grid Partners joined existing investors Cambridge Innovation Capital and IQ Capital in backing the sound recognition specialist.
"Our Series A round in 2017 raised $5.5m. Since then we’ve doubled the size of the company, licensed our technology to leading players and seen their products make a significant impact on the smart home market,"
The funding will support the development and commercialisation of the company's electrostatic audio technology for vehicles.
"Currently the automotive industry uses mainly magnetic coil technology within its in-car speakers. While simple and cost effective, they tend to take up lots of space and weight, which doesn’t fit with the power-consumption and carbon-emissions-conscious world we live in today,"