Analysis of FLAC Music Pieces Recovery

Abstract

Abstract-In this paper, we propose a method of recovering the music piece of FLAC file downloaded by BitTorrent. It was decoded the split FLAC file via getting the complete frames from piece of FLAC file and adding the temporary header to decode. The percentage of successfully decoding is all above 90%. From the partial audio signal we extract the musical feature and calculate the cross-correlation with the features in database. The feature in database is extract from the complete music file. The Musical feature is detected by chromagram to get the key strength. The percentage of audio identification is growing tendency with the increase of piece size. It experiment shows probability of identify audio with getting the part of FLAC file distributed by BitTorrent.

Audio Fragment Identification System

“…BitTorrent is a peer-to-peer file sharing technology which splits files into many fixed sized fragments for efficient distribution of files [6]. To prevent illegal distribution of digital audio through the BitTorrent, identification methods of audio fragments of MP3 and FLAC formats were proposed in [7,8]. In [9,10], audio identification method is also used in forensic technology under a hypothesis that the audio is correctly decoded.…”