Presentation	2009-10-23 On Timber Discrimination of Brass Instruments Based on Critical Band Model Kaoru YAMANAKA, Kenji FURIHATA,
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Abstract(in English)	Usefulness of a critical bandwidth model using second-order FIR filters is experimentally discussed. Critical bands describe a filtering process in the ear; they describe a system that is analogous to a spectrum analyzer showing the response patterns of overlapping band-pass filters with variable center frequencies. Importantly, critical bands are not fixed; they are continuously variable in frequency, and any audible tone will create a critical band centered on it. The brass instrument is said that it will decide the timber in the formant structure. In this paper, the timber distinction experiment using the critical bandwidth model output was executed for five kinds of brass instruments performed by various intervals (Bb, C, D, Eb, F, G, A, Bb_). The resonance frequency indicates peak frequency (F1, F2, F3) of a spectrum of the instrument sound envelope curve. The brass instruments are composed of the oscillation part (Player's lips), the mouthpiece, the resonance part (horn), and the mouthpiece which has the resonance frequency. From the results, we see that an important factor discriminated the timber of the trumpet is F3, the cornet is F2, the flugelhorn is F1, the trombone is F1 and F2, and the euphonium is F1.
Keyword(in Japanese)	(See Japanese page)
Keyword(in English)	Brass instruments / Timber / FIR filter / Resonance frequency / Critical band model / LPC analysis
Paper #	EA2009-66
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Conference Information
Committee	EA
Conference Date	2009/10/15(1days)
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Paper Information
Registration To	Engineering Acoustics (EA)
Language	JPN
Title (in Japanese)	(See Japanese page)
Sub Title (in Japanese)	(See Japanese page)
Title (in English)	On Timber Discrimination of Brass Instruments Based on Critical Band Model
Sub Title (in English)
Keyword(1)	Brass instruments
Keyword(2)	Timber
Keyword(3)	FIR filter
Keyword(4)	Resonance frequency
Keyword(5)	Critical band model
Keyword(6)	LPC analysis
1st Author's Name	Kaoru YAMANAKA
1st Author's Affiliation	Faculty of Engineering, Shinshu University()
2nd Author's Name	Kenji FURIHATA
2nd Author's Affiliation	Faculty of Engineering, Shinshu University
Date	2009-10-23
Paper #	EA2009-66
Volume (vol)	vol.109
Number (no)	240
Page	pp.pp.-
#Pages	6
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