APPLICATION OF FAST FILTER BANK FOR TRANSCRIPTION OF POLYPHONIC SIGNALS

Autor:	Say Wei Foo, Edwin Wei Thai Lee
Rok vydání:	2003
Předmět:	Masking (art) Engineering Frequency analysis business.industry Transcription (music) Speech recognition General Medicine Transition band Filter bank law.invention Identification (information) Hardware and Architecture law Reference database Polyphony Electrical and Electronic Engineering business
Zdroj:	Journal of Circuits, Systems and Computers. 12:655-674
ISSN:	1793-6454 0218-1266
DOI:	10.1142/s0218126603001082
Popis:	In this paper, a novel approach to the transcription of polyphonic signals is investigated. The method makes use of top–down analysis algorithm and bottom–up reconstruction of frequency contents of musical signals using a reference database that contains the spectral profiles of all single notes. Recognition accuracy is enhanced by analyzing the time-frequency contents using a bank of narrow band filters with very sharp transition band. The filters are designed using the Frequency-Response Masking technique. The high selectivity of the filters has enhanced the frequency analysis and increased the accuracy of identification. The method was tested with musical notes generated from an acoustic piano. The results show that for single notes and chords up to four notes, perfect identification can be achieved.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::1f789fc2b8d905835b8ef2d11c74c86b https://doi.org/10.1142/s0218126603001082 Zobrazit plný text záznamu