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MEMS Microphones Busting Out All Over
6/24/2014

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STMicroelectronics top in MEMS, but late bloomers in MEMS mics
STMicroelectronics 100 million units compared to 25 million in 2012, which in revenue translated to 200 percent growth in 2013 over 2012. ST forecasts its MEMS microphone business will continue growing from just over $800 million in 2013 to over $1.25 billion by 2017. Click here for larger image (Source: STMicroelectronics) 


 



STMicroelectronics got into the MEMS microphone business relatively late, but after a slow start it had a breakthrough year in 2013 growing 200 percent in revenue on 100 million units compared with just 25 million units in 2012. Based on its reputation for high-volume manufacturing of quality products, and major design wins like Apple's iPad Air (revealed by IHS teardown) STMicroelectronics' growth to $1.25 billion in revenue seems realistic.

'While it would be incredibly difficult to maintain the pace of growth we'd seen in 2013, MEMS Microphones will continue to grow quickly as manufacturers add multiple microphones in each device to deliver ever more advanced audio processing and fulfill the voice activation functions,' Andrea Onetti, general manager Analog and Audio Systems Division, STMicroelectronics told EE Times.
STMicroelectronics 100 million units compared to 25 million in 2012, which in revenue translated to 200 percent growth in 2013 over 2012. ST forecasts its MEMS microphone business will continue growing from just over $800 million in 2013 to over $1.25 billion by 2017. Click here for larger image (Source: STMicroelectronics)

 

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R_Colin_Johnson
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Re: Unidirectional MEMS Microphones
R_Colin_Johnson   7/29/2014 3:45:38 PM
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Not sure about the Harmon model, but have made inquiries. Will get back to you soon.

D Cowan
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Re: Unidirectional MEMS Microphones
D Cowan   7/29/2014 3:14:21 PM
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Yes, we'll definitely see SNR continue to improve and at lower price points. What is even more important, in my mind, is that a unidirectional MEMS microphone with high SNR can replace multiple-microphone arrays - today. That means, even if the per unit cost is still at a premium, the value prop still makes sense. At a high level, one device means the  total system is easier to design and manufacture, less space is taken up on an already tight motherboard, and there will be fewer points of failure (not to mention lower power, heat, etc., etc.). I'm just wondering about uptake of the Harman product though because I haven't seen much written about it to know how well it works.

R_Colin_Johnson
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Re: Unidirectional MEMS Microphones
R_Colin_Johnson   7/29/2014 2:53:42 PM
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According to the analysts, all the high-end smartphone makers are going for as much SNR as they can get, and are willing to pay the premium price they demand. The reason is that the voice recognition and noise canceling algorithms work so much better, low-volume voice calls are easier to understand and the quality of the soundtrack on video recordings is even more important than the video quality. Of course, like everything else, as volume production ramps up and prices go down the other-than-top-line-models will start to adapt HD mics too.

D Cowan
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Unidirectional MEMS Microphones
D Cowan   7/29/2014 1:07:11 PM
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In January Harman announced unidirectional analog and digital MEMS microphones with SNR (signal-to-noise ratio) up to 68 dBA. Have you come across anyone designing these in yet? If a single MEMS microphone can replace multi-mic arrays for noise cancelation, it should speed adoption by significantly reducing the cost and space required within the target device. Thoughts?

R_Colin_Johnson
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Re: What is the breakdown of AMICs vs DMICs?
R_Colin_Johnson   6/30/2014 12:12:08 AM
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All your arguements for digital outputs are valid, and in fact the first startup's first microphone (Akustica) had digital outputs. Unfortunately, its kind of like the VHS versus Beta video take war--if you can remember that far back--everybody was already set up for analog mics (electrets) so much so that even Akustica has had to acquiesce a prodeuce analog models. But I am with you, and think hat eventually all MEMS mics will be digital. 

AZskibum
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What is the breakdown of AMICs vs DMICs?
AZskibum   6/29/2014 3:57:51 PM
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It would be interesting to know how far digital microphones (DMICs) -- MEMS mics that include the A/D converter -- have penetrated within the overall MEMS mic market. From an interface perspective, integrating the A/D into the same package as the MEMS makes so much more sense -- especially for applications requiring many microphones (beam-forming arrays, etc.). From the perspective of the audio processor at the receiving end, the two-wire PDM data & clock interface from a DMIC is so much easier to handle than a low-level analog signal, that it's probably well worth the extra cost of the MEMS mics with built-in A/D converters.

Kinnar
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Re: Which is the major cunsuming applicaton of MEMS Mic?
Kinnar   6/26/2014 2:12:58 PM
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Oh that's an answer with fact figures; my estimation was based on the observation of my own. But yes it is very true that MEMS Mics will be having more chances of acceptance in other left out application with possible use of it for betterment.

R_Colin_Johnson
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Re: Which is the major cunsuming applicaton of MEMS Mic?
R_Colin_Johnson   6/26/2014 12:13:42 PM
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Your are right too. Even though there are MEMS mics with HD quality, here is the breakdown on where they are used today (according to IHS)-- mobile phones (70 percent), tablets (13 percent), MEMS mics in headphones that manufacturers supply with their smarphones (9 percent), laptops (6 percent) and wearables (2 percent).

 

Kinnar
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Re: Which is the major cunsuming applicaton of MEMS Mic?
Kinnar   6/26/2014 12:08:26 AM
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You are right many applications of MEMS Mic array are under development in many different areas, in the filed of mechanical engineering, environmental science, medical electronics etc. Soon many products will be in the market using MEMS Mic arrays. Although these Mics are still not being tried as conventional microphones that are used in live performances. 

R_Colin_Johnson
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Re: Which is the major cunsuming applicaton of MEMS Mic?
R_Colin_Johnson   6/25/2014 6:13:36 PM
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Beside smartphones, tablets all use MEMS microphones, also many PCs are switching over because they can locate mutiple MEMS in the bezel for noise cancelling and beam stearing. Apple's smart watch due this fall will use MEMS microphones also video camera, still cameras and digital recorders are all moving to MEMS mics. For the next generation, wearables will use MEMS mics and portable medical devices and the list goes on.

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