human: Given a node-centered hypergraph: <hypergraph>, where nodes represent authors and hyperedges represent groups of authors who co-authored the same paper.

Details of the hypergraph:
Center node: "High quality Spanish restricted-domain TTS oriented to a weather forecast application."
  Abstract: A restricted domain text-to-speech system oriented to a weather forecast application is presented. This TTS system is embedded in a multimedia interactive service accessible from different media, such as TV, Internet and mobile devices. The requirements of this application give rise to several particularities in the design and implementation of the TTS system, which are discussed throughout this paper. Several tests have been conducted to analyze the TTS system in terms of performance and speech quality.

Connected through hyperedge HE-1 (induced by source paper "Limited Domain Synthesis"):
  with members:
    - "Task and Domain Specific Modelling in the Carnegie Mellon Communicator System"

Question: Please tell me which research area the center author belongs to. The 4 classes are: Computer science, Mathematics, Engineering, Economics, Psychology, Business. Directly output the class name.

gpt: Computer science