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LINEAR PREDICTION OF SPEECH SYNTHESIS
Fig shows block diagram of speech synthesizer using linear prediction.
1. For voiced sound, pulse generator is selected as signal source while for unvoiced sounds noise generator is selected as signal source.
2. The linear prediction coefficients are used as coefficients of digital filter. Depending upon these coefficients , the signal is passed and filtered by the digital filter.
3. The low pass filter removes high frequency noise if any from the synthesized speech. Because of linear phase characteristic FIR filters are mostly used as digital filters.
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