why do my spectrogram values are negative and how to read them?
Afficher commentaires plus anciens
I have plotted three spectrogram of audio signal "hello" in FFT and FFT written without using inbuilt fft and HDFT(hopping DFT) and values of spectrogram are in negative values. How to read them and why they are in negative values?
Réponses (1)
The power levels are in dB. Any positive number less than 1 is negative when converted to dB
pow2db(0.5)
Catégories
En savoir plus sur Fourier Analysis and Filtering dans Centre d'aide et File Exchange
le 17 Mar 2023
le 17 Mar 2023
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!
Translated by 
