A Pitch Detection Algorithm for Continuous Speech Signals Using Viterbi Traceback with Temporal Forgetting

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21230%2F11%3A00183926" target="_blank" >RIV/68407700:21230/11:00183926 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

A Pitch Detection Algorithm for Continuous Speech Signals Using Viterbi Traceback with Temporal Forgetting

Popis výsledku v původním jazyce

This paper presents a pitch-detection algorithm (PDA) for application to signals containing continuous speech. The core of the method is based on merged normalized forward-backward correlation (MNFBC) working in a time domain with the ability to make basic voicing decision. Viterbi traceback procedure is used for post-processing the MNFBC output considering the three best fundamantal frequencies (F0) in each step. This should make the pitch contour smoother and should also prevent octave errors. In transition probabilities computation between F0 candidates, two major improvements were made over existing post-processing methods. Firstly, we compare pitch distance in musical cents. Secondly, temporal forgetting is applied to avoid penalizing pitch jumpsafter prosodic pauses of one speaker or changes in pitch in dialog turn-takings. Results computed on a pitch-reference database show the benefit of the first improvement, but they have not yet proved any benefit of the second.

Název v anglickém jazyce

A Pitch Detection Algorithm for Continuous Speech Signals Using Viterbi Traceback with Temporal Forgetting

Popis výsledku anglicky

This paper presents a pitch-detection algorithm (PDA) for application to signals containing continuous speech. The core of the method is based on merged normalized forward-backward correlation (MNFBC) working in a time domain with the ability to make basic voicing decision. Viterbi traceback procedure is used for post-processing the MNFBC output considering the three best fundamantal frequencies (F0) in each step. This should make the pitch contour smoother and should also prevent octave errors. In transition probabilities computation between F0 candidates, two major improvements were made over existing post-processing methods. Firstly, we compare pitch distance in musical cents. Secondly, temporal forgetting is applied to avoid penalizing pitch jumpsafter prosodic pauses of one speaker or changes in pitch in dialog turn-takings. Results computed on a pitch-reference database show the benefit of the first improvement, but they have not yet proved any benefit of the second.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

JD - Využití počítačů, robotika a její aplikace

OECD FORD obor

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Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2011

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Acta Polytechnica

ISSN

1210-2709

e-ISSN

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Svazek periodika

51

Číslo periodika v rámci svazku

5

Stát vydavatele periodika

CZ - Česká republika

Počet stran výsledku

6

Strana od-do

8-13

Kód UT WoS článku

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EID výsledku v databázi Scopus

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