Graphene’s greatest promise is that not only can it be used as an additive for speaker diaphragms in traditional moving coil, magnetic dynamic speakers, but also as a transducer itself. In 2012 at the Lawrence Berkeley National Labs at the University of California, Berkeley, Dr. Alex Zettl and Dr. Qin Zhou were researching graphene for audio applications. About a year later a proof of concept graphene transducer was demonstrated consisting of a graphene diaphragm sandwiched between electrodes to create the electrical field. The LBNL technology was licensed by GraphAudio to be developed into commercialized audio products.
Since launching in 2016, GraphAudio has already created a portfolio of patents on graphene transducers for both speakers and microphones. The graphene diaphragms are very thin and light with a small spring constant so that the air itself damps its motion. The air-damped graphene converts almost all of its energy into sound and so is potentially extremely efficient.
GraphAudio has developed a new generation of graphene-based micro audio components and its patent-pending true graphene transducer delivers high sensitivity and ultra-low distortion. While other companies have implemented graphene flakes or fragmented components of graphene, because of its patent protected technology, GraphAudio is the first and only company, so far, to produce a transducer made of pure graphene, and at a fraction of the weight, thickness, and electrical usage of traditional dynamic speakers.
"Our pure graphene-powered speakers create a high-fidelity audio experience you have to hear to believe," says Ramesh Ramchandani, CEO of GraphAudio. "GraphAudio is the only company that can deliver a pure graphene transducer for acoustics and we believe its superior performance has the opportunity to establish a new global standard in audio, setting the stage for development and commercialization of a wide range of applications beyond high-definition sound, including echolocation, ultrasonic sensing, and near-field communications."
In the months leading up to CES 2020, GraphAudio signed a memorandum of understanding with an established high-end audio company, initiating the pathway to commercialization of sound on a chip, and GraphAudio recently signed a partnership with a microphone producer to create a high-sensitivity microphone. Utilizing graphene, a thin, light, durable and highly conductive material, as a transducer offers superior performance to manufacturers by producing variable form factors that deliver enhanced sound, and high volume without distortion.
GraphAudio invites CES attendees to experience, for the first time, the revolutionary sound produced by its 100% pure graphene-powered speaker technology at CES in Suite 10306 at The Venetian from January 7-10, 2020.
www.graphaudio.com
