Selecting Appropriate Amharic Unit For Domain Specific Speech Synthesis A Case For Mobile Phones

Speech synthesis – the production of artificial speech – has a lot of applications. Applying speechrnsynthesis onto mobile phones for Amharic language will be an important success in languagerntechnology.rnMobile phones are characterized by smaller memory and processing capacity. The choice of arnunit for concatenation has an impact on the quality of the synthetic speech produced, the size ofrnthe database that is used to store the speech units, and also the time required to synthesize arnspeech. In this thesis, three Amharic units: phonemes, diphones, and syllables are compared.rnAnalysis is done on these units in terms of naturalness, intelligibility, memory requirement, andrnprocessing time. The result shows that diphone based speech synthesis approach is thernappropriate alternative since it requires less memory and time, and provides reasonablyrnacceptable naturalness and intelligibility. The overall Mean Opinion Score obtained forrnintelligibility and naturalness is 4.10 and 3.69, respectively.rnKeywords: Speech Synthesis, Mobile Phones, Diphones, Amharic Language

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