A white noise generating apparatus for stress relaxation and concentration improvement includes: a headset including a microphone for outputting the voice to a communication line, a sound outputting unit for outputting the voice inputted from the communication line, and a sensing unit which is capable of sensing at least one of a pulse wave, a skin current, a skin temperature, and a white noise generator including a stress calculating unit for calculating a stress index from the voice outputted from the microphone, a white noise generating unit for generating white noise and outputting same to the sound output unit, and a control unit for controlling the white noise generating unit to output white noise sound according to the stress index calculated from the stress calculating unit so that the stress level may be normal.
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