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Abstract
In this paper, we present an overview on the previous and recent methods proposed to estimate a clean spectral phase from a noisy observation in the context of single-channel speech enhancement. The importance of phase estimation in speech enhancement is inspired by the recent reports on its usefulness in finding a phase-sensitive amplitude estimation. We present a comparative study of the recent phase estimation methods and elaborate their limits. We propose a new phase enhancement method relying on phase decomposition and time-frequency smoothing filters. We demonstrate that the proposed time-frequency phase smoothing method successfully reduces the variance of the noisy phase at harmonics. Our results on different speech and noise databases and different signal-to-noise ratios show that in contrast to the existing benchmark methods only the proposed method balances a tradeoff between a joint improvement in perceived quality of 0.2 in PESQ score and speech intelligibility of 2% by phase-only enhancement.
Original language | English |
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Pages (from-to) | 1283-1294 |
Journal | IEEE Transactions on Audio Speech and Language Processing |
Volume | 23 |
Issue number | 8 |
DOIs | |
Publication status | Published - 2015 |
Fields of Expertise
- Information, Communication & Computing
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Dive into the research topics of 'Phase Estimation in Single-Channel Speech Enhancement: Limits-Potential'. Together they form a unique fingerprint.Projects
- 1 Finished
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FWF - Phase - Phase-Aware Signal Processing for Speech Transmission
1/10/15 → 31/07/19
Project: Research project