16. A system, comprising: one or more processors; and a memory that includes a plurality of computer-executable components, the plurality of computer-executable components comprising: a frequency warping component to perform formant-based frequency warping on fundamental frequencies and coding spectrums of source speech waveforms in a first language to produce transformed fundamental frequencies and transformed coding spectrums; a trajectory generation component to generate warped parameter trajectories based at least on the transformed fundamental frequencies and the transformed coding spectrums; and a trajectory tiling component to produce transformed target speech waveforms with voice characteristics of the first language that retain at least some voice characteristics of a target speaker using the warped parameter trajectories and features from target speech waveforms of the target speaker in the second language.
16. A system, comprising: one or more processors; and a memory that includes a plurality of computer-executable components, the plurality of computer-executable components comprising: a frequency warping component to perform formant-based frequency warping on fundamental frequencies and coding spectrums of source speech waveforms in a first language to produce transformed fundamental frequencies and transformed coding spectrums; a trajectory generation component to generate warped parameter trajectories based at least on the transformed fundamental frequencies and the transformed coding spectrums; and a trajectory tiling component to produce transformed target speech waveforms with voice characteristics of the first language that retain at least some voice characteristics of a target speaker using the warped parameter trajectories and features from target speech waveforms of the target speaker in the second language. 17. The system of claim 16 , further comprising: a Speech Transformation and Representation using Adaptive Interpolation of Weighted Spectrum (STRAIGHT) analysis component to estimate the coding spectrums of the source speech waveforms; a pitch extraction component to extract fundamental frequencies of the source speech waveforms using pitch extraction; and a feature extraction component to extract the features that include fundamental frequencies, LSPs, and gains from the target speech waveforms.