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                        |   | 453 | There is experimental support for FD-PSOLA based synthesis; this can be enabled by setting the `concatenatorClass` property to `FdpsolaUnitConcatenator`.  | 
                      
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                        |   | 455 | There is also experimental support for HNM based synthesis. To build an HNM voice, make sure the line containing  | 
                      
                        |   | 456 | {{{  | 
                      
                        |   | 457 | marytts.tools.voiceimport.HnmTimelineMaker  | 
                      
                        |   | 458 | }}}  | 
                      
                        |   | 459 | is enabled (not commented out with `#`) in the `importMain.config` file, then run the voice import tools and run the '''HnmTimelineMaker''' in addition to the other components. Install the HNM voice by changing the `waveTimeline` property to point to the HNM timeline file (`timeline_hnm.mry` be default), and set the properties `concatenatorClass` and `audioTimelineReaderClass` to `HnmUnitConcatenator` and `HnmTimelineReader`, respectively.  | 
                      
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