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A Novel Pitch Detection Algorithm Based on Instantaneous Frequency for Clean and Noisy Speech

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Abstract

In this paper, a novel pitch detection algorithm (PDA) is proposed. Actually, pitch detection is a classical problem that has been investigated since the very beginning of speech processing. However, the novelty of the proposed method consists in establishing an empirical relationship between fundamental frequency (\(f_{0}\)) and instantaneous frequency (\(f_{i}\)), which serves as a basis to develop the proposed PDA. Even though \(f_{0}\) and \(f_{i}\) are defined as attributes of two different transforms, i.e., the Fourier transform and the Hilbert transform, respectively, the relationship proposed in this paper shows some interaction between both of them, at least empirically. The first step of this work consists in validating the proposed relationship on a large set of speech signals. Then, it is leveraged to develop an algorithm capable to (a) detect voiced/unvoiced parts of speech and (b) extract \(f_{0}\) contour from \(f_{i}\) values in the voiced parts. For evaluation purposes, the yielding \(f_{0}\) contour is compared to some well-rated state-of-the-art PDA’s. The main findings show that the quality of pitch detection obtained by the proposed technique is as satisfactory as some of top PDA’s, either in clean or in simulated noisy speech. In addition, one of the main advantages consists in bypassing the traditional short-time analysis required to assume local stationarity in speech signal.

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Data Availability

The datasets analyzed during the current study are available in the PTDB-TUG repository [29]. These datasets were derived from the following public domain resources: https://www2.spsc.tugraz.at/databases/PTDB-TUG/

Notes

  1. MATLAB code is available at [25].

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Acknowledgements

This work was supported by the University of Tunis El Manar, Tunisia, and by the University of Genoa, Italy.

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Authors and Affiliations

  1. ENIT, University of Tunis El Manar, Tunis, Tunisia

    Zied Mnasri

  2. DIBRIS, University of Genoa, Genoa, Italy

    Zied Mnasri, Stefano Rovetta & Francesco Masulli

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  1. Zied Mnasri
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Mnasri, Z., Rovetta, S. & Masulli, F. A Novel Pitch Detection Algorithm Based on Instantaneous Frequency for Clean and Noisy Speech. Circuits Syst Signal Process 41, 6266–6294 (2022). https://doi.org/10.1007/s00034-022-02082-8

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