We perceive vibrotactile stimuli from smart devices such as smartphones when we use various applications. However, vibrators in these devices can present only a specific nearby resonant frequency with enough intensity to perceive, making it challenging to offer various vibrotactile stimuli. In this study, we propose a method to realize a vibrotactile presentation in a wide range of frequencies using airflow vibration generated by a built-in audio speaker of a smart device. We implemented a system based on the proposed method using a smartphone and experimented with measuring the airflow pressure. Moreover, we also propose the application of texture presentation using airflow.
