The process to design a IIR filter is always the same. First of all we have to design the design the filter using its continuous transfer function, then, once the natural frequency of the filter, the order and the quality…
As I said in other posts, I am FPGA designer in a company. My functions are, between others, implement the signal acquisition and apply different digital signal processing algorithms, to obtain a signal that the FPGA can use to control…
In the last post we talked about digital control loops. In short, we talked about the elements that we can find in digital, or analog, control loops. The first of them is an element to acquire the difference between the…
In this blog I have tried to show you different tools, usually in the field of digital signal processing, so you can select the correct tools for your projects. This time we will use the tools that we have used…
Many times we need to manage low frequency signals sampled at high rates. This can be due to the need of detect edges in that signals as fast as possible, for example if we are using that signal to protect…
Few weeks ago Dialog Semiconductor announced a new series of FPGAs named as ForgeFPGA. The highlight of these new devices are not a high processing power, the highest speed or the big they are, the main highlights of these devices…
When I am working in a design for an FPGA, which involves the acquisition of any signal, I usually have to design a filter before using that signal in the control loop, or a protection. If the use of this…
If I say “software for engineering”, most of you probably think of MATLAB. I don’t know if there is any field in engineering which does not have a package in MATLAB, and digital signal processing and FPGA design are certainly…
Many times, in our designs we find a signal that our interest band of frequency is very close to the band that we need to reject. In this cases, in general, the most efficient way to attenuate the unwanted signal…
In the previous post I have design an audio equalizer. On that design I have used 3 different FIR filters to split 3 different frequency bands in order to send them to different speakers. Very low frequencies will be sent…
