Wyniki wyszukiwania - BazTech

Ograniczanie wyników

Znaleziono wyników: 3

Liczba wyników na stronie

Wyniki wyszukiwania

Wyszukiwano:
w słowach kluczowych: polyphony

Sortuj według:

Ogranicz wyniki do:

Multipitch estimation using judge-based model

Rychlicki-Kicior K., Stasiak B.

Bulletin of the Polish Academy of Sciences. Technical Sciences

2014

Vol. 62, nr 4

751--757

Multipitch estimation, also known as multiple fundamental frequency (F0) estimation, is an important part of the Music Information Retrieval (MIR) field. Although there have been many different approaches proposed, none of them has ever exceeded the abilities of a trained musician. In this work, an iterative cancellation method is analysed, being applied to three different sound representations - salience spectrum obtained using Constant-Q Transform, cepstrum and enhanced autocorrelation result. Real-life recordings of different musical instruments are used as a database and the parameters of the solution are optimized using a simple yet effective metaheuristic approach - the Luus-Jaakola algorithm. The presented approach results in 85% efficiency on the test database.

Toward a General Framework for Polyphonic Comparison

Allali J., Ferraro P., Hanna P., Iliopoulos C.

Fundamenta Informaticae

2009

Vol. 97, nr 3

331-346

Existing symbolic music comparison systems generally consider monophonic music or monophonic reduction of polyphonic music. Adaptation of alignment algorithms to music leads to accurate systems, but their extensions to polyphonic music raise new problems. Indeed, a chord may match several consecutive notes, or the difference between two similar motifs may be a few swapped notes. Moreover, the substitution scores between chords are difficult to set up. In this paper, we propose a general framework for polyphonic music using the substitution score scheme set for monophonic music, which allows new operations by extending the operations proposed by Mongeau and Sankoff [15]. From a practical point of view, the limitation of chord sizes and the number of notes that can be merged consecutively lead to a complexity that remains quadratic.

Experiments on pitch perception: implications for music and other processes

Houtsma A. J. M.

Archives of Acoustics

2007

Vol. 32, No. 3

475--490

This paper presents a review of the development of our understanding of pitch perception during the past three decades, in which the author was deeply involved. Some specific applications are discussed that are for the most part in the domain of music perception and show where the interest in pitch perception has led us today.