peech Enhancement Using Conjugate Symmetric Property of Short Time Fourier Transform
| Author(s) | : | Mahiboob, Dr. Shridhar S. K, S. R. Bharamagoudar, Somashekhar S. Pujar |
| Institution | : | Department of Electronics and Communication Engineering,Basaveshwara Engineering College Bagalkot, India |
| Published In | : | Vol. 2, Issue 5 — May 2015 |
| Page No. | : | 1460-1466 |
| Domain | : | Engineering |
| Type | : | Research Paper |
| ISSN (Online) | : | 2348-4470 |
| ISSN (Print) | : | 2348-6406 |
The main objective of speech enhancement is to improve quality and intelligibility. At the same time listenerfatigue should also be reduced. Short Time Fourier Transform (STFT) is employed in the present work. STFT magnitude andphase spectrum of noisy speech are computed. The magnitude spectrum is kept as it is, whereas phase spectrum is modifiedempirically. The modified phase is combined with the unmodified magnitude to get the complex spectrum. The complexspectrum is converted into time domain signal through inverse STFT. The resulting time domain signal quality andintelligibility are superior compared to the noisy speech signal. The proposed algorithm is evaluated through subjectivelistening tests, objective measures and spectrogram analysis. The results are superior as compared to earlier speechenhancement methods.
Mahiboob, Dr. Shridhar S. K, S. R. Bharamagoudar, Somashekhar S. Pujar, “peech Enhancement Using Conjugate Symmetric Property of Short Time Fourier Transform”, International Journal of Advance Engineering and Research Development (IJAERD), Vol. 2, Issue 5, pp. 1460-1466, May 2015.
