IN THE LAST 15 YEARS, VOICE COMMUNICATION TRAFFIC HAS FALLEN BY ABOUT HALF, MAINLY DUE TO THE IMPACT OF MESSAGING APPS. NTT DOCOMO, JAPAN’S LARGEST MOBILE PHONE COMPANY, SOUGHT A WAY TO REMIND PEOPLE OF THE MAGNIFICENCE OF COMMUNICATING BY VOICE ON VALENTINE’S DAY. NOTE: ON THIS DAY IN JAPAN, WOMEN GIVE CHOCOLATE TO MEN AS A VALENTINE’S GIFT. EVERYONE HAS A DIFFERENT VOICE PITCH, AND IT FORMS MANY BEAUTIFUL PATTERNS. FIRST, WE MEASURED THE VIBRATIONS OF VOICES AND TURNED THEM INTO VISIBLE CHLADNI FIGURES. USING 3D MODELING, WE TRANSFORMED THE CHLADNI FIGURES INTO CHOCOLATE MOLDS. WE SOLD THE CHOCOLATES AS VOICE CHOCOLATES THAT LET WOMEN GIVE THEIR VOICES, TRANSFORMED INTO CHOCOLATE, TO THE MEN THEY LOVE FOR VALENTINE’S DAY. THE CHOCOLATES WERE DELIVERED TO THE RECIPIENTS ON VALENTINE’S DAY. BY SCANNING THE CHOCOLATE WITH A SPECIAL APP THAT RECOGNIZED AR MARKERS IN THE CHOCOLATE, THE RECIPIENT COULD PLAY BACK A VOICE MESSAGE FROM HIS VALENTINE ON HIS SMARTPHONE.