30. The speech recognition apparatus of claim 27 , wherein the acoustic model is an acoustic model trained using a set of first non-temporally contiguous speech frames from temporally contiguous speech frames of training data.
30. The speech recognition apparatus of claim 27 , wherein the acoustic model is an acoustic model trained using a set of first non-temporally contiguous speech frames from temporally contiguous speech frames of training data. 31. The speech recognition apparatus of claim 30 , wherein the acoustic model is an acoustic model further trained using a set of second non-temporally contiguous speech frames from the temporally contiguous speech frames of the training data, the set of first non-temporally contiguous speech frames having one or more different speech frames from the set of second non-temporally contiguous speech frames.