3. 1st signal processing step: signal analysis and estimation
Signal analysis is a broad concept, covering all aspects of extracting information from a signal. Analysis is often inseparable from representation, as a well-chosen representation can more easily reveal a given characteristic. This is particularly true of the Fourier representation, for certain classes of signals. As an example, consider two wind instruments (a clarinet and a trombone) playing the same note. The signal plots themselves are not very informative, but the spectra (the squared moduli of their Fourier transforms) are, as shown in figure 12 . We can clearly see peaks corresponding to the fundamental frequency and harmonics (frequencies that are multiples of the fundamental frequency). It's quite clear that in either case, the fundamental frequency can easily be estimated...
Exclusive to subscribers. 97% yet to be discovered!
Already subscribed? Log in!
1st signal processing step: signal analysis and estimation
Application example: signal coding and compression
Article included in this offer
"Signal processing and its applications"
(
151 articles
)
Updated and enriched with articles validated by our scientific committees
A set of exclusive tools to complement the resources
Bibliography
Exclusive to subscribers. 97% yet to be discovered!
Already subscribed? Log in!
