8. A system having a speech inventory that includes phone labels that are concatenated to form synthetic speech, the system comprising: a processor; a module configured to control the processor to perform a first alignment on a trained set of HMMs to produce phone labels that are segmented, wherein each phone label has a spectral boundary; a module configured to control the processor to perform spectral boundary correction on the phone labels, wherein spectral boundary correction re-aligns each spectral boundary using bending points of spectral transitions; and a module configured to control the processor to synthesize speech using the phone labels having spectral boundary correction.
8. A system having a speech inventory that includes phone labels that are concatenated to form synthetic speech, the system comprising: a processor; a module configured to control the processor to perform a first alignment on a trained set of HMMs to produce phone labels that are segmented, wherein each phone label has a spectral boundary; a module configured to control the processor to perform spectral boundary correction on the phone labels, wherein spectral boundary correction re-aligns each spectral boundary using bending points of spectral transitions; and a module configured to control the processor to synthesize speech using the phone labels having spectral boundary correction. 10. The system of claim 8 , wherein the module configured to control the processor to perform a first alignment on a trained set of HMMs to produce phone labels that are segmented further: initializes the set of HMMs; re-estimates the set of HMMs; and performs embedded re-estimation on the set of HMMs.