NUTQ SIGNALIGA DASTLABKI ISHLOV BERISHNING TAKOMILLASHTIRILGAN USUL VA ALGORITMLARI
;
nutq signali, dastlabki ishlov berish, old kuchaytirish (pre-emfaza), oynalash, ovozli faollikni aniqlash (VAD), spektral ayirish, shovqindan tozalash, veyvlet o‘zgartirishi, MFCC, nutqni tanib olish.Abstrak
Maqolada nutqni avtomatik tanib olish (Automatic Speech Recognition, ASR) tizimlarida nutq signaliga dastlabki ishlov berishning asosiy bosqichlari — old kuchaytirish (pre-emfaza), signalni kadrlarga ajratish va oynalash, ovozli faollikni aniqlash (Voice Activity Detection, VAD), shovqindan tozalash hamda signal amplitudasini normallashtirish ko‘rib chiqilgan. Spektral ayirish, Viner filtri va veyvlet o‘zgartirishi asosidagi takomillashtirilgan shovqindan tozalash algoritmlari qiyosiy tahlil qilinib, ularning nutqni tanib olish aniqligiga ta’siri baholangan. Mel-chastotali kepstral koeffitsiyentlarni (MFCC) hisoblashdan oldingi dastlabki ishlov berish bosqichining ahamiyati asoslab berilgan.
Iqtiboslar
Rabiner L. R., Schafer R. W. Theory and Applications of Digital Speech Processing. — Upper Saddle River: Pearson, 2011. — 1056 p.
Rabiner L. R., Juang B. H. Fundamentals of Speech Recognition. — Englewood Cliffs: Prentice Hall, 1993. — 507 p.
Huang X., Acero A., Hon H. W. Spoken Language Processing: A Guide to Theory, Algorithm, and System Development. — Upper Saddle River: Prentice Hall, 2001. — 980 p.
Boll S. F. Suppression of acoustic noise in speech using spectral subtraction // IEEE Transactions on Acoustics, Speech, and Signal Processing. — 1979. — Vol. 27, No. 2. — P. 113–120.
Ephraim Y., Malah D. Speech enhancement using a minimum mean-square error short-time spectral amplitude estimator // IEEE Transactions on Acoustics, Speech, and Signal Processing. — 1984. — Vol. 32, No. 6. — P. 1109–1121.
Davis S., Mermelstein P. Comparison of parametric representations for monosyllabic word recognition in continuously spoken sentences // IEEE Transactions on Acoustics, Speech, and Signal Processing. — 1980. — Vol. 28, No. 4. — P. 357–366.
Donoho D. L. De-noising by soft-thresholding // IEEE Transactions on Information Theory. — 1995. — Vol. 41, No. 3. — P. 613–627.
Benesty J., Sondhi M. M., Huang Y. (eds.). Springer Handbook of Speech Processing. — Berlin: Springer, 2008. — 1176 p.
Loizou P. C. Speech Enhancement: Theory and Practice. — 2nd ed. — Boca Raton: CRC Press, 2013. — 711 p.
Vaseghi S. V. Advanced Digital Signal Processing and Noise Reduction. — 4th ed. — Chichester: John Wiley & Sons, 2008. — 544 p.
##submission.downloads##
Nashr qilingan
Nashr
Bo'lim
Iqtibos keltirish tartibi
