TDK Announces T3902 Lowest-Power PDM MEMS Microphone

TDK Corporation introduced the InvenSense T3902, which the company touts as the world’s lowest power Pulse Density Modulation (PDM) microphone for consumer devices. The new T3902 offers a high SNR of 64.5 dB, and high Acoustic Overload Point (AOP) of 120 dB in a very small package, optimized for mobile devices, wearables, headsets, TV remotes and more, supporting far-field communications, enabling clear audio capture in loud conditions, and ideal for voice recognition.

Knowles announced that it has developed a new hands-free reference solution to enable OEMs and ODMs to build headphones, headsets and wireless earbuds that allow users to talk directly to Alexa. The new AISonic SmartMic Headset Development Kit for Amazon AVS supports Alexa with the lowest power voice activation, eliminating the need for Push-to-Talk activation. This Development Kit includes the Knowles AISonic IA611 SmartMic, which integrates a low power audio edge processor inside a tiny microphone.

Knowles Corporation announced that it has developed with Baidu and Bestechnic (BES) a new hands-free reference design for headphones, headsets and true wireless earbuds that works with smart devices powered by DuerOS, Baidu’s conversational AI system. The Knowles IA610 SmartMic supports the industry’s lowest-power, always-on voice wake capability to enable Baidu voice service on-the-go for ear worn consumer products.

QuickLogic Corporation announced it has partnered with Shenzhen Horn Audio Co., Ltd. to deliver a Bluetooth-enabled headset reference design supporting Amazon Alexa Voice Services (AVS) for both Apple and Android smartphones and tablets. Based on QuickLogic's EOS S3 Voice and Sensor Processing Platform, the new reference design features advanced always-on and always-listening voice processing capabilities with the industry's lowest power consumption.