5.Conclusion

In this paper，an articulatory velocity profile weighted cost function is used to optimize an DNN for acoustic-to-articulatory inversion.The result indicates the performance slightly improves by the new optimization criterion.It indicates the different articulatory channel is of different level of importance in different articulation circumstance.And a rough weight function based on velocity profile is able to improve the performance of acoustic-to-articulatory inversion in most cases.It can be expect that the performance can be further improved by incorporated more deliberated weighting function into the cost function.