According to one embodiment, a speech translation apparatus includes a receiving unit, a first recognition unit, a second recognition unit, a first generation unit, a translation unit, a second generation unit, a synthesis unit. The receiving unit is configured to receive a speech in a first language and convert to speech signal. The first recognition unit is configured to perform speech recognition and generate a transcription. The second recognition unit is configured to recognize which emotion type is included in the speech and generate emotion identification information including recognized emotion type(s). The first generation unit is configured to generate a filtered sentence. The translation unit is configured to generate a translation of the filtered sentence in the first language in a second language. The second generation unit is configured to generate an insertion sentence. The synthesis unit is configured to convert the filtered and the insertion sentences into speech signal.