- Speech is the most natural form of human-human communications.
- Speech may be a more intuitive way of accessing information, controlling things, and communicating.
- To understand speech as a means of communication.
- To represent speech for transmission and reproduction.
- To analyze speech for automatic recognition and extraction of information.
- To discover some physiological characteristics of the talker.
Block Diagram of Speech Processing:
- The above figure shows a block diagram of a generic speech encoding system.
- In this, the A-to-D converter converts the analog speech signal to a sampled waveform representation.
- The digital signal is analyzed and coded by digital computation algorithms to produce a new digital signal that can be transmitted over a digital communication channel.
- The procedure to convert digitized speech signal with higher bit rate to lower bit rate is called compression.
Examples:
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| Used for Mobile Communication |
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| Used in Walkie Talkies |
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| Used for Radio Broadcasting |
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| Used for Music Recordings |