Digital, analog MEMS microphones for wearables
Knowles Corp. (Itasca Illinois) has introduced a trio of SiSonic MEMS microphones for ear and wearable applications.
These are: the Titan (digital), Falcon (differential analog), and Robin (single-ended analog) intended for True Wireless Stereo (TWS) earbuds, smart watches, Augmented Reality (AR) glasses and Virtual Reality (VR) headsets.
Knowles states that the Robin offers 66dB SNR and clean signals up to 130dB SPL with less than 1 percent distortion. A similar level of signal clarity holds true for Falcon, and brings even higher signal-to-noise ratio (SNR) performance of 68.5dB further improving TWS applications such as ambient awareness with less noise. In low frequency and speech-band use cases, Falcon delivers 69dB.
Likewise, Titan offers similar SNR performance to Falcon, while improving battery life by consuming 60 percent less current (470 microamps) than typical digital mics and reducing latency to 3 microseconds, making it suitable for active noise cancellation (ANC) and always-on applications in digital architectures.
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