Patent ID: 7010488
Filing Date: 2006-03-07
Classification: G10L

Abstract:
1. A method for compressing concatenative acoustic inventories for speech synthesis, comprising: creating an acoustic inventory comprising a plurality of natural speech intervals; determining a set of peak components for each basis vector in the plurality of natural speech intervals; determining start and end vectors for the plurality of natural speech intervals; defining a mapping between a first peak index set associated with the start vector and a second peak index set associated with the end vector such that respective peak points in the first peak index set and the second peak index set are associated with each other; creating an extended mapping based on the mapping between the first peak index set and the second peak index set; performing a comparison between a complete morph mapping and a peak morph mapping to determine whether an index is located within the first peak index set; creating a sequence of approximation vectors based on the complete morph mapping; determining a time warp function and a corresponding vector in a sequence vector which is proximal to the sequence of approximation vectors; parameterizing the time warp function by way of a first straight line and a second straight line to approximate a curve which extends through a predetermined spaced; and storing the parameters index function and names of the acoustic units.