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.
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
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.
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.
New versions of BASF's Ecovio line are both compostable and designed for either injection molding or thermoforming. These combinations are becoming more common for the single-use bioplastics used in food service and food packaging applications, but are still not widely available.
For industrial control applications, or even a simple assembly line, that machine can go almost 24/7 without a break. But what happens when the task is a little more complex? That’s where the “smart” machine would come in. The smart machine is one that has some simple (or complex in some cases) processing capability to be able to adapt to changing conditions. Such machines are suited for a host of applications, including automotive, aerospace, defense, medical, computers and electronics, telecommunications, consumer goods, and so on. This radio show will show what’s possible with smart machines, and what tradeoffs need to be made to implement such a solution.