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Vocoders has _______ complexity and achieves _______ economy in transmission bit rate.

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Vocoders has _______ complexity and achieves _______ economy in transmission bit rate.

(a) Maximum, moderate

(b) Maximum, high

(c) Minimal, moderate

(d) Minimal, high

The question was asked in semester exam.

The above asked question is from Characteristics of Speech Signals in section Speech Coding of Wireless/Mobile

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Correct answer is (b) Maximum, high

The best explanation: Vocoders achieve very high economy in transmission bit rate. They are in general more complex. They are based on using a priori knowledge about the signal to be coded, and for this reason, they are signal specific.

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