Mic Array Application

Microphone array applications include various smart devices. MEMS microphone is mainly used for speech recognition. When the user may move to other locations and recognition distance needs to be increased, microphone array will be used to realize the directional voice capture function. More advanced is that some devices will add voice recognition and user voiceprint recognition. Applications include: Audio Conference, Smart Speaker, Smart TV, Smart Home and AI detection.

Selection guide

•High SNR for improve voice recognition accuracy
•High phase and sensitivity consistency can improve accuracy of microphone array
•Flat low frequency response can improve accuracy of voice recognition and user voiceprint recognition

IC Name Description SNR AOP Sensitivity LFRO Dimensions Port Location
3SM121MZT1UA Analog 66 dB 130 dB -38±1 dBV <20 Hz 3.76 x 2.95 x 1.10mm Top
3SM123HZB1VD-002 Analog 62 dB 130 dB -38±1 dBV <20 Hz 2.75 x 1.85 x 0.90mm Bottom
3SM121LZB1HA Analog 65 dB 130 dB -38±1 dBV <20 Hz 3.50 x 2.65 x 0.98mm Bottom
3SM121LZB1UC Analog 65 dB 130 dB -38±1 dBV <20 Hz 3.76 x 3.00 x 1.10mm Bottom
3SM121NZB1HA Analog 67 dB 128 dB -38±1 dBV 10 Hz 3.50 x 2.65 x 0.98mm Bottom
3SM121PZB1UA Analog 68 dB 128 dB -38±1 dBV 10 Hz 3.76 x 3.00 x 1.10mm Bottom
3SM222FMT1KA Digital 60 dB 120 dB -26±1 dBFS 38 Hz 4.00 x 3.00 x 1.06mm Top
3SM221KMT1GA-P Digital 64 dB 120 dB -26±1 dBFS 100 Hz 4.00 x 2.00 x 1.10mm Top
3SM221KMT1KA-P Digital 64 dB 120 dB -26±1 dBFS 35 Hz 4.00 x 3.00 x 1.00mm Top
3SM221LMT1GA Digital 65 dB 120 dB -26±1 dBFS 30 Hz 4.00 x 2.00 x 1.10mm Top
3SM221MMT1KA Digital 66 dB 120 dB -26±1 dBFS 10 Hz 4.00 x 3.00 x 1.00mm Top
3SM222KMB1HA-P Digital 64 dB 120 dB -26±1 dBFS 35 Hz 3.50 x 2.65 x 0.98mm Bottom
3SM222NMB1HA Digital 67 dB 120 dB -26±1 dBFS 10 Hz 3.50 x 2.65 x 0.98mm Bottom