An interview with environmental musician and sound designer Takashi Kokubo was published in Tokyo Shimbun.

The article introduces Kokubo’s work as the creator of the emergency earthquake alert sound heard on smartphones and other devices, and explains the philosophy behind its design. Kokubo describes warning sounds not as mere electronic tones, but as important “social sounds” that instantly influence human awareness and action.

The emergency earthquake alert sound was designed to notify people of danger and prompt immediate action within the few seconds after an earthquake occurs. Its distinctive pattern—rapidly shifting from low to high frequencies and repeating in a structured sequence—creates a sense of urgency that clearly differs from everyday sounds.

The article also discusses how various sounds in cities and public spaces can affect human psychology and behavior. From environmental music creation to public sound design, it highlights Kokubo’s long-standing work exploring the relationship between sound and society.

The interview presents Kokubo’s ideas and activities as an effort to reconsider the relationship between people, sound, and the environment.

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