A System Based on Sinusoidal Analysis for the Estimation and Compensation of Pitch Variations in Musical Recordings
This paper presents a computationally efficient and easily interactive system for the estimation and compensation of speed variations in musical recordings. This class of degradation can be encountered in all types of analog recordings and is characterized by undesired pitch variations during the playback of the recording. We propose to estimate such variations in the digital counterpart of the analog recording by means of sinusoidal analysis, and these variations are corrected via non-uniform resampling. The system is evaluated for both artificially degraded and real audio recordings.