SmartSound™ MEMS Microphones

I need to know "How much low-frequency sounds can record by INMP441 and ICS4343". If it is possible. How can we achieve that if their reference is available?. The specified part numbers are "How much helpful for medical devices?"

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Interested in the ICS-43434

Is there any data on polar (directional) linearity? Ie how omnidrectional it is?

What about amplitude linearity?

I'd like to use MEMS microphones underwater, up to approx 10 bar of pressure (inside pipelines), for acoustic pattern recognition (leaks mostly). I'd ideally solder four mics on a thin PCB, bolt that to an aluminium carrier plate and seal it off by covering the whole in epoxy resin. There would be approx 2-3mm resin covering the mic can. For sealing it would make sense to use a bottom-ported mic. Would the mics still be able to pick up audio, with their ports blocked and covered in resin?

Hello everyone
I am planning to use ICM-42605 in one of my project.But i am not getting any current consumption readings in high performance mode (ODR 1 khz).As i am developing for low power current consumption matters a lot to me. Can any one tell me current consumption reading in high performance mode? for 1khz ODR

We are looking at an array of ICS-52000 microphones for our far field voice recognition applications. Would like to know how does daisy chain configuration of ICS-52000 microphones capture and sample the voice. Do all of them in the daisy chain configuration sample the voice at the same time ? If the microphones start sampling at arrival of pulse at their WS input then there will be a finite delay between each microphone in the daisy chain configuration. Let me know.

What happens when the 160 dB SPL absolute maximum is surpassed. We are expecting a maximum of ~185 dB SPL as an impulse, not for an extended period of time. In a use case like this would you expect damage to occur on the microphone or just distortion and clipping? We are looking to use this microphone purely as a trigger, not for any processing, all we need is a voltage out when the sound occurs.

How do we hook up a ics-43432 with a bluetooth module.

Hi all,

I am new to this forum and would really appreciate some help with the ICS43434 and interfacing with a Raspberry Pi.

The questions I have are as follows:
1. In my schematic design, I have the ICS43434 connected to the following pins on the Pi: VDD - 3.3v, GND - Ground, WS - PCM_FS (GPIO19), SCK - PCM_CLK (GPIO18), SD - PCM_DIN (GPIO20). Are these connections correct?

2. How do I go about registering the microphone with the Pi, is there a linux Kernal module available for this specific device or a generec I2S microphone module?

The datasheet of the ICS 43434 microphone says that it operates in low power mode when the sampling frequency is between 6KHz-18.75KHz and it operates in high performance mode when the sampling frequency is between 23KHz-51KHz. what would happen if I operate the microphone with a sampling frequency of 22.05KHz?