AUD-SWIPE-P: A PARALLELIZATION OF THE AUD-SWIPE PITCH ESTIMATION ALGORITHM USING MULTIPLE PROCESSES AND THREADS

摘要

In this work we implement a parallel version of the pitchrnestimation algorithm Aud-SWIPE. The new implementation,rnAud-SWIPE-P produces a remarkable acceleration,rnmaking it usable in applications where it was not efficientrnbefore because of its high computational cost. We parallelizedrnthe algorithm using multiple threads and processesrnto speed up different steps of the algorithm, and take advantagernof different architectures. The goal for Aud-SWIPEP’srnperformance was to achieve an execution time belowrnthe signal duration, opening the possibility to create a realtimernsoftware using Aud-SWIPE as pitch estimation algorithm.rnThe implementation was evaluated running the algorithmrnin different real-world scenarios. The accelerationrnachieved was around 4.4, compared with the sequential versionrnof the algorithm. In sound files with a sampling frequencyrnof 10 kHz or less, the real time execution goal wasrnfully achieved.