There are provided a voice outputting apparatus, a voice outputting system, a voice outputting method and a storage medium which, when the synthetic voices of a plurality of text data are to be uttered in overlapping relationship with each other, voice-synthesize the plurality of text data with different kinds of voices and to be outputted, thereby enabling the voices of the plurality of text data to be heard easily. The voice outputting apparatus is provided with a voice waveform generating portion for generating the voice waveform of text data, and a voice output portion for causing, when the overlapping of the voice outputs of a plurality of text data is detected, the respective text data to be outputted in different voices, or from discrete speakers, or in voices of different heights.