System and method for compressing concatenative acoustic...

Data processing: speech signal processing – linguistics – language – Speech signal processing – Synthesis

Reexamination Certificate

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C704S265000, C704S269000

Reexamination Certificate

active

07010488

ABSTRACT:
A system and method is used to compress concatenative acoustic inventories for speech. Instead of using general purpose signal compression methods such as vector quantization, the method of the invention uses multiple properties of acoustic inventories to reduce the size of the acoustic inventories, such as the close acoustic match property and acoustic units that are labeled with sufficiently fine distinctions such that between any two phones no events occur that are substantially distinct from these two phones. The close acoustic match property is where acoustic units that share the same phone are acoustically similar at the points where these units may be concatenated. By utilizing multiple properties of acoustic units, the number of parameters per unit that are stored as LPC parameters are minimized. As a result, smaller storage devices may be used due to the reduction of the size of the storage requirements.

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