MEMS microphones Forum Discussions
Does anybody know what happens when a MEMS microphone is subjected to extreme soundpressures (well above the Acoustic overload point, AOP), do they get permanentely damaged?
Suggestions for some other microphone technology?Show Less
I purchased the KIT_IM73A135V01_FLEX however the product page contains no documentation: https://www.infineon.com/cms/en/product/evaluation-boards/kit_im73a135v01_flex/
There is a 2x4 position male header included in the kit, but the board has 6 pads labelled (1,3,4,5,6,8) and it's not clear what function each pad has or how the header should be soldered.
Other FLEX kits seem to include documentation, eg: https://www.infineon.com/cms/en/product/evaluation-boards/eval_im69d130_flexkit/
(but there are only 4 pads on this model)
Can you please provide the relevant documentation?Show Less
We are pondering using the IM67D120A microphone in a project. This microphone can operate in one of four modes depending on the speed of the PDM clock, see the image attached.
However the MCU we are using only allows us to chose between three different frequencies: 1, 2 and 4 MHz. As you see, this would either put us above the allowed max frequency or between LPM & mode 3 or mode 3 & mode 2.
Our preference is to run the PDM clock at 2 MHz, but what behaviour can we expect from the mic when running at an intermediary clock speed? will the microphone glitch back and forth between two modes (and cause audible artifacts) or is the mode switching more seamless and nothing bad can be expected?
Please let me know the purpose (benefit, effert, etc) of the ventilation hole on Top Back Plate and Bottom Back Plate.
Does it work effective for the delay, SNR, low frequency and so on?
There doesn't appear to be a forum space for Infineon microphone products, so I'm putting this in the general forum.
I would like to model the acoustic performance of this sensor when integrated with various candidate gasket and enclosure designs using COMSOL.
Is any geometry information available about the membrane and internal cavity for this device that is suitable for modelling purposes? This information is critical to accurately modelling the system's acoustic performance.
Here's a document from ST discussing the type of modelling I'm interested in doing:
Is there a development environment for Infineon Audiohub Nano evaluation board and where can I find the evaluation board demo source code.
I have Infineon AudioHub Nano, which works as a microphone with 2 microphone sensors if USB-connected to a Windows computer. For my application, I need at least 6 microphone sensors. I am thinking of plugging 3 AudioHub Nano into one computer and writing my software to capture audio signal from the 3 devices at the same time, but I was told by Infineon engineer that Windows only allows my software to omegle.2yu.co capture audio from one microphone at one time.
The reason given is
A windows or MAC computer allows usage of a single sound-card at any given time. If this sound-card is driving 1, 2, 4, or 8, the operating system does not care. But if there are two sound-cards, it is by default not allowed to use both at the same time. The Audio-hub nano works similar to a sound-card ...
I want to know whether or not it really cannot be done at my software. Otherwise, I need to make a Nano board with 6 microphone omeglz sensors.Show Less
I am trying to make a digital stethoscope using MEMS microphone. I bought Infineon
Microphone flex evaluation kit for IM69D130 microphones.
Can I record audio files in .wav format using the flex evaluation kit, without the Audio Hub Nano ?
I have other boards like the Raspberry Pi 3,4 and Arduino MKR1010 available with me. Can I use these boards and the flex evaluation kit to record .wav files? Show Less
Please let me know the reason of "Product Application Matrix" in https://www.infineon.com/cms/en/product/promopages/microphones/?redirId=180425
I understand that TWS earbuds and Wearable application are needed the small size.
I guess that Laptops/Tablets may be suitable for the digital interface but I don't know my understanding is true or not.
For example, I think that small delay may be suitable for ANC but the group delay of IM69D127 is biggest one in these products.
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