This way the yaxis is in linear scale.
Question
How can I change dspdata spectrum units, its in dB (dB/Hz for PSD), I would like the spectrum in real units.
Expert Answer
Neeta Dsouza
PhD Expert
Answered Nov 20, 2025
The data itself is saved in linear scale, not dB scale. It is only the plotting that displays the value in dB scale. You can try the following:
h = psd(spectrum.periodogram,randn(1024,1)); plot(h.Frequencies,h.Data);
100% Run Guarantee
3-Hour Fast-Track Delivery
Need a Custom Version or Complete Simulation for This Problem?
Our 500+ PhD engineers build, debug, and optimize working MATLAB scripts and Simulink (.slx) models tailored to your exact assignment rubrics with zero plagiarism.
Tested on MATLAB R2024b / R2026a
Turnitin 0% Plagiarism Report
Free 7-Day Revisions Guarantee
Have a different question? Ask here
Related matlab Questions & Solutions
Browse All →
Explore similar technical troubleshooting questions and verified MATLAB solutions:
Ready-to-Run MATLAB & Simulink Projects
Browse All Projects →