9. A system comprising: a computer system; an interface of the computer system to receive a request to generate or modify a target acoustic model for a target language; an acoustic model repository of the computer system to provide access to a source acoustic model for a source language, wherein the source acoustic model includes information that maps acoustic features of the source language to phonemes in a transformed feature space; an alignment component of the computer system to use the source acoustic model in the transformed feature space to align untransformed voice data in the target language with phonemes in a corresponding textual transcript to obtain aligned voice data, wherein the untransformed voice data is in an untransformed feature space; and a target model generator of the computer system to i) transform the aligned voice data according to a particular transform operation using the source acoustic model to obtain transformed voice data, ii) adapt the source acoustic model to the target language using the untransformed voice data in the target language to obtain an adapted acoustic model; and iii) train a target acoustic model for the target language using the transformed voice data and the adapted acoustic model; wherein the interface is further configured to provide access to the target acoustic model.
14. The system of claim 9 , wherein training the target acoustic model comprises performing a CMLLR transform operation and a maximum mutual information (MMI) transform operation using the transformed voice data and the adapted acoustic model.