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Content Provider | IET Digital Library |
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Author | Srinivasan, Sriram Pandharipande, Ashish |
Abstract | The problem of speech enhancement is considered in an interference environment, typical to applications like hands-free voice communication and multi-party conferencing. In the proposed system, a directional microphone placed at each interference is used to estimate the power spectral density (PSD) of the interference and the quantised PSD estimate is transmitted over a wireless link to an omnidirectional primary microphone that observes the corrupted source speech signal. At the primary microphone, the received observations are fused to obtain an estimate of the PSD of the desired speech signal. The problem of minimising transmitted power is considered subject to constraints on total transmission rate and maintaining the mean-squared error in the estimated speech signal PSD below a prescribed limit, under narrowband and broadband signal models. The optimisation problem is solved by determining the optimum rate for encoding signal PSDs. The proposed strategy is analysed using sample speech and music signals. |
Starting Page | 792 |
Ending Page | 799 |
Page Count | 8 |
ISSN | 17519675 |
Volume Number | 8 |
e-ISSN | 17519683 |
Issue Number | Issue 7, Sep (2014) |
Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/iet-spr/8/7 |
Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/10.1049/iet-spr.2013.0417 |
Journal | IET Signal Processing |
Publisher Date | 2014-08-15 |
Access Restriction | Open |
Rights Holder | © The Institution of Engineering and Technology |
Subject Keyword | Audio Equipment And System Broadband Signal Model Corrupted Source Speech Signal Directional Microphone Encoding Signal PSDs Hands-free Voice Communication Interference Environment Mean-squared Error Microphones Minimisation Multiparty Conferencing Music Signal Narrowband Signal Model Omnidirectional Primary Microphone Optimal Rate Allocation Optimisation Problem Optimisation Technique Power Spectral Density Estimation Quantised PSD Estimate Radio Link Radio Link And Equipment Remote Power-constrained Wireless Microphones Speech And Audio Coding Speech And Audio Signal Processing Speech Coding Speech Enhancement Speech Processing Technique Total Transmission Rate Transmitted Power Minimization Wireless Link |
Content Type | Text |
Resource Type | Article |
Subject | Signal Processing Electrical and Electronic Engineering |
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