Simon Dixon, Gerhard Widmer,
"MATCH: A Music Alignment Tool Chest"
: Proceedings of the 6th International Conference on Music Information Retrieval (ISMIR 2005), London, UK, 2005
Original Titel:
MATCH: A Music Alignment Tool Chest
Sprache des Titels:
Englisch
Original Buchtitel:
Proceedings of the 6th International Conference on Music Information Retrieval (ISMIR 2005), London, UK
Original Kurzfassung:
We present MATCH, a toolkit for aligning audio recordings
of different renditions of the same piece of music,
based on an efficient implementation of a dynamic time
warping algorithm. A forward path estimation algorithm
constrains the alignment path so that dynamic time warping
can be performed with time and space costs that are
linear in the size of the audio files. Frames of audio are
represented by a positive spectral difference vector, which
emphasises note onsets in the alignment process. MATCH
was tested on several hundred test cases and had a median
error of 20 ms, with less than 1% of test cases failing to
align at all. The software is useful for content-based indexing
of audio files and for the study of performance interpretation;
it can also be used in real-time for tracking
live performances. Another possible application is in an
intelligent audio recording and editing system for aligning
splice points. The toolkit also provides functions for displaying
the cost matrix, the forward and backward paths,
and any metadata associated with the recordings, which
can be shown in real time as the alignment is computed.
Forschungs-