HOME  |  NEWS  |  BLOGS  |  MESSAGES  |  FEATURES  |  VIDEOS  |  WEBINARS  |  INDUSTRIES  |  FOCUS ON FUNDAMENTALS
  |  REGISTER  |  LOGIN  |  HELP
naperlou
User Rank
Blogger
Process closer to the source
naperlou   9/6/2012 9:24:25 AM
NO RATINGS
The most significant aspect of this device is processing the data at the sensor.  This is becoming viable with integration of the ASIC and the MEMS sensor.  Until recently, wireless mics used analog signals to the receiver because the delay introduced by signal processing would be noticeable.  This is similar to the situation with smart cameras.  With the amount of processing available in embedded SOCs, much of the signal work can be done without transmitting the data.  This also allows, as in the case for the mic, real time correction of the signal, if required.  The significance of MEMS is that it can more easily be integrated with circuitry than other types of sensors.  This is the way to go.

Karen Lightman
User Rank
Blogger
Re: Process closer to the source
Karen Lightman   9/6/2012 12:56:20 PM
NO RATINGS
naperlou thanks for your post on the blog - I totally agree that "this is the way to go" and I look forward to seeing how more and more processing will be done at the sensor. I hope that more folks (like you) will read this blog and get inspired with how to integrate and design in these smart MEMS sensors into more and more applications. Thanks again! Karen  

Charles Murray
User Rank
Blogger
Re: Process closer to the source
Charles Murray   9/6/2012 8:22:10 PM
NO RATINGS
Karen, I agree that intelligence at the sensor is the future. I believe Freescale does something simular with its Xtrinsic line of sensors, doesn't it?

naperlou
User Rank
Blogger
Re: Process closer to the source
naperlou   9/7/2012 10:02:24 AM
NO RATINGS
Chuck, you are correct!  What is interesting about these sensors is that they perform basic DSP functions right on the chip.  While many microcontrollers have built in DSP hardware these days, it is still more efficient to have that function performed at the sensor. 

William K.
User Rank
Platinum
Mems microphones
William K.   9/7/2012 9:58:35 AM
NO RATINGS
The thing that makes music what it is comes from the distortions provided by the instrument. Otherwise we get somethng like the electronic music of the 1960's era. So it is not clear just exactly is meant by making things sound better through processing. Perhaps itwill be possible to compensate for the distortion from the microphone element, which could indeed offer an improvement, and it should certainly be easy to shape the frequency response to just about any curve desired. But eliminating noise without the ability to know what the noise is at any particular instant will probably have some unintended results.

The biggest advantage will be in reduced cost and smaller size, followed by a reduction in the installed cost.

So mostly it is "about the money".



Partner Zone
Latest Analysis
Samsung's Galaxy line of smartphones used to fare quite well in the repairability department, but last year's flagship S5 model took a tumble, scoring a meh-inducing 5/10. Will the newly redesigned S6 lead us back into star-studded territory, or will we sink further into the depths of a repairability black hole?
Fifteen European research centers have launched EuroCPS to help European companies develop innovative products for the Internet of Things.
Get your Allman Brothers albums ready. The iconic Volkswagen Microbus may be poised for a comeback, and this time it could be electric.
In 2003, the world contained just over 500 million Internet-connected devices. By 2010, this figure had risen to 12.5 billion connected objects, almost six devices per individual with access to the Internet. Now, as we move into 2015, the number of connected 'things' is expected to reach 25 billion, ultimately edging toward 50 billion by the end of the decade.
NASA engineer Brian Trease studied abroad in Japan as a high school student and used to fold fast-food wrappers into cranes using origami techniques he learned in library books. Inspired by this, he began to imagine that origami could be applied to building spacecraft components, particularly solar panels that could one day send solar power from space to be used on earth.
More:Blogs|News
Design News Webinar Series
3/31/2015 11:00 a.m. California / 2:00 p.m. New York
2/25/2015 11:00 a.m. California / 2:00 p.m. New York
12/11/2014 8:00 a.m. California / 11:00 a.m. New York
5/7/2015 11:00 a.m. California / 2:00 p.m. New York
Quick Poll
The Continuing Education Center offers engineers an entirely new way to get the education they need to formulate next-generation solutions.
Apr 20 - 24, Taking the Internet of Things to the Cloud
SEMESTERS: 1  |  2  |  3  |  4  |  5  |  6 |  7


Focus on Fundamentals consists of 45-minute on-line classes that cover a host of technologies. You learn without leaving the comfort of your desk. All classes are taught by subject-matter experts and all are archived. So if you can't attend live, attend at your convenience.
Last Archived Class
Sponsored by Proto Labs
Learn More   |   Login   |   Archived Classes
Twitter Feed
Design News Twitter Feed
Like Us on Facebook

Sponsored Content

Technology Marketplace

Copyright © 2015 UBM Canon, A UBM company, All rights reserved. Privacy Policy | Terms of Service