Use a Sine Wave block, and enter a vector of frequency values, this will give you a vector of sine waves each with one specific frequency, then sum the output of the block.
Signal in Simulink with defined frequency content
Question
How can i define a block in simulink which have uniform (or at least as uniform as possible) frequency content in a defined frequency range?
Solution
OTHER TIPS
You probably need to create the signal yourself starting from a random signal source. Random signal should have uniform frequency in all bands. Then use a filter to restrict this to your defined frequency range. You can design your filter using fdatool.
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