The following information was submitted:
Transactions: WSEAS TRANSACTIONS ON SIGNAL PROCESSING
Transactions ID Number: 89-342
Full Name: Amr Nabil
Position: Student
Age: ON
Sex: Male
Address: 60 street 32 Wadi Hof, Helwan, Cairo
Country: EGYPT
Tel: 0125392303
Tel prefix: +2
Fax:
E-mail address: anabil@eng.cu.edu.eg
Other E-mails: amronabil@gmail.com
Title of the Paper: spectral analysis of codecs effect on speech
Authors as they appear in the Paper: Amr Nabil , M. Hesham
Email addresses of all the authors: anabil@eng.cu.edu.eg , mhesham@eng.cu.edu.eg
Number of paper pages: 10
Abstract: In this work, we present results on the effect of well-known mixed excitation linear prediction (MELP) and code-excited linear prediction (CELP) codecs (coder/decoder) on spectral features of Arabic sounds. The study shows that the spectral distortion is large compared to other studies and is largest for MELP1200. Vowel formants have a shift which may exceed one critical band below or above its reference value. Log Area Ratio (LAR) parameters suffer from distortion less than 5 dB. Finally, it was found that the coded pitch period did not suffer any significant change through the coding/decoding process.
Keywords: Spectral analysis, Arabic speech, Speech coders, Formants, Pitch period
EXTENSION of the file: .doc
Special (Invited) Session: Distortion of Voicing and Vocal Tract Parameters After Codecs
Organizer of the Session: 697-246
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