Our audio processing technologies are the result of intensive research into the most effective approaches for extracting clean speech signals in complex acoustic environments. The result: truly innovative, patented and tested solutions that work in the real world.
These flexible software solutions power advanced audio experiences, making them a perfect fit for a wide range of applications, including hearing enhancement on smartphones and TWS earbuds, video recording and video calling.
Our proprietary Blind Source Separation technology is the foundation of our aiso™ solutions. Our Blind Source Separation leverages Bayesian statistical models to process multi-microphone audio signals and separates each source of sound with a consistent spatial location into its own distinct channel of audio.
Acoustic Echo Cancellation or AEC cancels loudspeaker signals from the audio captured by a device’s microphones, allowing you to communicate without being tripped up by echoes.
Our AEC technology:
Our AEC technology can be configured in a variety of ways to optimise it for specific applications, including standard configuration, no reference signal or asynchronised signal.
Modular, multi-device conferencing products have their microphones and speakers integrated into separate physical devices that use separate sampling clocks, for example:
Because the reference signal is created on one device, while the microphone signal is created separately on another device, this results in asynchronous signals.
While such asynchronous signals would pose a problem to standard AEC technologies, our AEC can be configured to be resilient to this, making it the ideal solution for modular, multidevice conferencing systems.
Noise Suppression technology reduces stationary and transient noise in speech signals, increasing the Signal-to-Noise Ratio and reducing listening fatigue.
One of the most popular configurations of our Noise Suppression technology functions with a very low latency of just 1 millisecond, meeting the strict latency demands of face-to-face communications for hearing enhancement applications.
The Low Latency configuration of our Noise Suppression is optimised to work in harmony with our audio source separation technology, enabling it to suppress not only ambient noise but also the residual noise from interfering sound sources.
Once our Blind Source Separation has separated out the sound sources, our source selection technology enables only the desired sound sources to be kept, while interfering sound sources are discarded.
Desired or ‘target’ sound sources can be selected in a number of ways: