Presentation | 2009-12-17 A pitch estimator with inverse notch filters extracting harmonic components Arata KAWAMURA, Motoki MIZUNO, Youji IIGUNI, |
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Abstract(in Japanese) | (See Japanese page) |
Abstract(in English) | Pitch name estimation is an indispensable technique for achieving automatic music transcription. We previously proposed a pitch (fundamental frequency) estimator using inverse notch filters that achieve extremely narrow pass-band. The inverse notch filters are designed so that its center frequency is corresponding to the pitch of a music signal. The inverse notch filters are connected in parallel. Since their output includes only a specified frequency component of the music signal, the inverse notch filter directly gives a pitch estimate when its output power is greater than a threshold. But, when the magnitude of the pitch is less than the other frequency's one, the capability of the pitch estimator degrades. In this paper, we propose a new pitch estimator utilizing harmonic components of a music signal. When the 2nd harmonic component is firstly detected as a pitch candidate, the frequency of it multiplied by 3/2 exists. In this case, the proposed pitch estimator gives a pitch estimate as a half of the detected pitch candidate. Simulation results show that the proposed pitch estimator can improve an estimation accuracy than the previous one. |
Keyword(in Japanese) | (See Japanese page) |
Keyword(in English) | automatic music transcription / pitch name estimation / notch filter / inverse notch filter |
Paper # | SIS2009-39 |
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Committee | SIS |
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Conference Date | 2009/12/10(1days) |
Place (in Japanese) | (See Japanese page) |
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Paper Information | |
Registration To | Smart Info-Media Systems (SIS) |
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Language | JPN |
Title (in Japanese) | (See Japanese page) |
Sub Title (in Japanese) | (See Japanese page) |
Title (in English) | A pitch estimator with inverse notch filters extracting harmonic components |
Sub Title (in English) | |
Keyword(1) | automatic music transcription |
Keyword(2) | pitch name estimation |
Keyword(3) | notch filter |
Keyword(4) | inverse notch filter |
1st Author's Name | Arata KAWAMURA |
1st Author's Affiliation | Graduate School of Engineering Science, Osaka University() |
2nd Author's Name | Motoki MIZUNO |
2nd Author's Affiliation | Graduate School of Engineering Science, Osaka University |
3rd Author's Name | Youji IIGUNI |
3rd Author's Affiliation | Graduate School of Engineering Science, Osaka University |
Date | 2009-12-17 |
Paper # | SIS2009-39 |
Volume (vol) | vol.109 |
Number (no) | 338 |
Page | pp.pp.- |
#Pages | 5 |
Date of Issue |