The world's highest performance Audio Front Ends for voice-controlled products
Any voice-controlled product can work in a quiet room, but that's not where your customers live.
DSP Concepts’ TalkTo™ line of Audio Front Ends use a suite of advanced microphone-processing and Machine Learning techniques to deliver dependable voice-control, even in the most hostile acoustic environments!
Anatomy of a Voice-Controlled Product
Audio Front End (AFE)
Conceptually, the AFE serves as a microphone cleaner. It uses raw microphone-data to detect, extract, and clean any voice-commands found in the ambient sound-field. TalkTo front ends use proprietary Machine Learning techniques to actively strip away up to 30dB of interfering noise!
Wake Word Engine (WWE)
Wake-Word Engines continuously scan the AFE-provided voice-stream, looking for the presence of a specific phrase (e.g. Alexa or OK-Hound). The accuracy of the WWE is one of the primary drivers of UX-quality, and is highly dependent upon the purity of the AFE-generated voice-stream.
Back End Services
Once the wake-word is detected, the product forwards the extracted voice-command to a cloud-based or local voice-service. Here again, accuracy of the ASR (speech-to-text) and NLU (deciding intent) requires a high-quality voice-stream from the Audio Front End.
The video below shows the 6-Microphone, Amazon Qualified, TalkTo - Set Top Box AFE running on an Amlogic A113 board. The system is running stand-alone, directly below the TV's speakers (playout at 90+ dBC!). Even without the closed-loop benefit of AEC (there's no reference signal to eliminate), the TalkTo AFE is still able to detect and extract faint voice-commands from the ambient sound-field; allowing the WWE and Voice Services to deliver a robust user-experience, even in the harshest of conditions!
Voice controlled products span the spectrum of embedded design, from picowatt-sipping wearables to home-theater products with near limitless processing resources. Accordingly, DSP Concepts has off-the shelf TalkTo designs for a wide variety of applications, each custom tailored to the capabilities and needs of the target environment. For more information or to schedule a live demo, please contact firstname.lastname@example.org
Set Top Box
Battery Optimized Devices
Wearable / Hearable
Smart Home / IoT