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?

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".

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. 



Partner Zone
Latest Analysis
McLaren is one of the biggest names in auto racing. But now it has its eyes on a whole new challenge -- innovating healthcare.
What if algae borne of fertilizer runoff that pollutes rivers and lakes could be harvested and used as biofuel feedstock? What if the leftovers could be recycled into farm soil nutrients, eliminating at least some of the need for artificial fertilizers in the first place? Western Michigan University researchers have a plan.
PTC will stream its LiveWrox IoT conference for free beginning Tuesday, May 5.
Manufacturers of plastic parts recognize the potential of conformal cooling to reduce molding cycle times. Problem is, conformal molds require additive manufacturing (AM), and technologies in that space are still evolving. Costs also can be high, and beyond that, many manufacturing organizations lack the knowledge and expertise needed to apply and incorporate additive technologies into their operations.
Stratasys has announced the winners in its 11th annual Extreme Redesign contest for middle school, high school, and college students around the world in engineering, design, and art or architecture.
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.
May 4 - 8, Designing Low Power Systems using Battery and Energy Harvesting Energy Sources
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