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Knowles Smart Microphone is Always Listening

24 November 2015

Knowles Corporation has unveiled VoiceIQ, claiming it is the world’s first “always listening” smart microphone. The technology automatically adapts performance to the acoustic environment at hand and enables voice interfaces on a mobile handset with power savings.

Always-on capabilities typically require constant battery-draining power or access to an electrical outlet. With VoiceIQ, there is less impact on battery life. As such, it targets both mobile devices and wearables.

The technology relies on a new architecture of the audio system pathways that integrates an audio processing algorithm with acoustic activity detection into a multi-mode digital microphone. The solution recognizes when the audio should be awakened and when it is in sleep mode.

Consumers using the technology will be able to wake up a portable device and launch specific commands from across a room with a single phrase. VoiceIQ also adapts to noise in the environment and recognizes the surroundings to adjust thresholds to detect a user’s voice.

Knowles partnered with Qualcomm Technologies International, a subsidiary of Qualcomm Incorporated, to pair VoiceIQ with Qualcomm’s CSR8670 and CSR8675 Bluetooth audio system-on-chip solutions. The combination includes an audio DSP, an application processor with embedded flash memory, a high-performance stereo codec, a power management subsystem and up to six digital microphone inputs that support enhanced quality audio output and create feature rich devices.

To contact the author of this article, email engineering360editors@ihs.com



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