Introduction to Spectral Analysis

Introduction to Spectral Analysis

This chapter presents some concepts of Spectral Analysis and Acoustic features including the minimal knowledge base needed in order to properly use SAP2 (and to understand the next chapters). We will use the Explore & Score module to present those concepts. This module is similar to the previous versions of Sound Analysis with several new features (you will also note that real-time performance is now about 20 times faster).

Because of time constraints, a few features that existed originally existed in Sound Analysis Pro were not yet implemented in the new version. Previous versions provided three spectral views: derivatives, sonogram, and contours, the current version however only include the spectral derivatives and (a low quality display of) , but no contours display. We also did not implement that ‘frequency range’ and the ‘number of tapers’ controls.

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