A force sense notification device configured to notify a manipulator of a magnitude of an acting force exerted on a surgical instrument used in surgery, the force sense notification device comprising: a signal input part to which a measurement signal indicating the magnitude of the acting force exerted on the surgical instrument is input; a sound information generator configured to generate, based on the measurement signal, notification sound information indicating the magnitude of the acting force using at least: a first notification sound emitted when a calculated magnitude of an external force is less than a first threshold set in advance, the first notification sound containing at least a first low-pitched note and a first high-pitched note pitched higher than the first low-pitched note, and a second notification sound emitted when the calculated magnitude of the external force is larger than or equal to the first threshold and less than a second threshold set in advance, the second notification sound containing at least a second low-pitched note and a second high-pitched note pitched higher than the second low-pitched note, at least one of the second low-pitched note or the second high-pitched note being different in pitch from the first low-pitched note and the first high-pitched note; and a notification sound outputter configured to output the notification sound information generated by the sound information generator to a sound generator configured to emit a sound based on the notification sound information, wherein the first high-pitched note is consonant with the first low-pitched note, wherein the second high-pitched note is consonant with the second low-pitched note. a signal input part to which a measurement signal indicating the magnitude of the acting force exerted on the surgical instrument is input; a sound information generator configured to generate, based on the measurement signal, notification sound information indicating the magnitude of the acting force using at least: a first notification sound emitted when a calculated magnitude of an external force is less than a first threshold set in advance, the first notification sound containing at least a first low-pitched note and a first high-pitched note pitched higher than the first low-pitched note, and a second notification sound emitted when the calculated magnitude of the external force is larger than or equal to the first threshold and less than a second threshold set in advance, the second notification sound containing at least a second low-pitched note and a second high-pitched note pitched higher than the second low-pitched note, at least one of the second low-pitched note or the second high-pitched note being different in pitch from the first low-pitched note and the first high-pitched note; and a first notification sound emitted when a calculated magnitude of an external force is less than a first threshold set in advance, the first notification sound containing at least a first low-pitched note and a first high-pitched note pitched higher than the first low-pitched note, and a second notification sound emitted when the calculated magnitude of the external force is larger than or equal to the first threshold and less than a second threshold set in advance, the second notification sound containing at least a second low-pitched note and a second high-pitched note pitched higher than the second low-pitched note, at least one of the second low-pitched note or the second high-pitched note being different in pitch from the first low-pitched note and the first high-pitched note; and a notification sound outputter configured to output the notification sound information generated by the sound information generator to a sound generator configured to emit a sound based on the notification sound information, wherein the first high-pitched note is consonant with the first low-pitched note, wherein the second high-pitched note is consonant with the second low-pitched note.