Speech communication in noise to valid the virtual sound capturing system

The microphone systems were designed to capture the real sound field for the creation of the remote virtual coexistence space: omnidirectional microphone, binaural dummy head, linear array microphones, and spherical microphone. The captured signals were applied to synthesize into the binaural signal. These binaural cues were generated using head-related transfer function (HRTF) through headphone. For the validation, the sentence recognition tests were carried out to quantify the ability of speech perception with the sentence lists for normal listeners. In addition, the readability and the naturalness were used to assess the quality of the synthesized sounds. The different noise environments were applied with different signal to noise ratio and an efficient sound capturing system was suggested by the comparing the results of the sentence recognition tests.