Dual-Microphone Spectral Subtraction
| Document type: | Researchreports |
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| Full text: | |
| Author(s): | Harald Gustafsson, Ingvar Claesson, Sven Nordholm, Ulf Lindgren |
| Title: | Dual-Microphone Spectral Subtraction |
| Translated title: | Två-Mikrofons Spectral Subtraktion |
| Series: | Research Report |
| Year: | 2000 |
| Issue: | 2 |
| ISSN: | 1103-1581 |
| Organization: | Blekinge Institute of Technology |
| Department: | Department of Telecommunications and Signal Processing (Institutionen för telekommunikation och signalbehandling) Department of Telecommunications and Signal Processing S-372 25 Ronneby +46 455 780 00 |
| Authors e-mail: | hgu@its.hk-r.se |
| Language: | English |
| Abstract: | Mobile phones are constantly decreasing in size, thereby complicating the acoustical functionality. Signal processing methods can be used to partially mitigate this problem. In this paper we suggest a method which uses multiple spectral subtraction functions and two microphones, introducing only a short signal delay. The idea is to use spectral subtraction methods to extract the noise as well as the speech during a single time-frame. The environment background noise may not be stationary, thereby limiting the method to only employ short estimates of the background noise signal. Results are presented for experiments in various environments, showing a reduced noise level in the processed signal compared with the un-processed signal, and with preserved speech quality. |
| Summary in Swedish: | mobiltelefon, brusreducering, två (2) mikrofoner, spectral subtraktion |
| Subject: | Signal Processing\Speech Enhancement |
| Keywords: | Mobile telephone, noise reduction, speech enhancement, dual two (2) microphones, spectral subtraction |
| URN: | urn:nbn:se:bth-00149 |
