The size of the latest investment was not disclosed but it brings the total invested in Trigence to more than $20 million since its formation in 2006, the company said.
The company's main technology is Dnote, which uses digital signals to directly drive an analog multiple moving-coil speaker. Trigence's technology has been licensed to Japanese car-audio and amusement game manufacturers and the company also sells DSP chips that implement the Dnote technology.
Trigence said the latest injection of money would be used to further adoption of its digital speaker modules in portable equipment.
"Traditionally the transducer and driving electronics in the audio subsystem were designed independently with little knowledge of the other component. Digital speakers offer a new paradigm where all elements are designed in concert for the best possible auditory performance," said Pete Birch, CEO of Trigence, in a statement.
Birch added that Trigence intends to incorporate microphones within speakers for use in speech controlled audio interface modules.
"The work Trigence has done in this field is innovation at its best. We hope that, along with the other investors, we can work to aid them in substantially growing their business to become the dominant player in consumer audio. The company has immense knowledge, not only of digital audio, but uniquely of the whole acoustic system," Tsunesaburo Sugaya, managing director and partner with Miyako Capital.
Both Supreme Electronics Co., Ltd. and Mira I Souzou were also participants in the funding round.