From the course: IoT Foundations: Operating System Applications
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Process sensing data
From the course: IoT Foundations: Operating System Applications
Process sensing data
- [Instructor] Processing data can enable value added services, aligned with the data management needs. To enable the data processing capability we need some math or digital signal processing libraries. A basic function included in this library is fast Fourier transform, called FFT, which is a digital signal processing hours in basically used for calculating frequencies out of time series signals, and has very broad applications, such as radio signal processing, audio data analysis as shown here, which displays the frequencies of an audio sample when an airplane is taking off with the goat wave software. As well as machine maintenance and the diagnostics. Where we can use the FFT to easily spot the pattern or abnormality our of a large set of time series data. Here, let's see how to use a dedicated FFT C library named FFTW to do a simple signal processing job. These library can work on many systems, although there might be some adjustments required to be done. In this demo, we'll…
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