| 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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| Topics (in Japanese) | (See Japanese page) |
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| 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 | |