The ringtone that adults can't hear is referred to as a ultrasound ringtone. This type of ringtone emits a sound frequency that is above the range of human hearing. It is typically used in applications such as security systems and animal repellents.
If you are interested in using an ultrasound ringtone for your device, here are some steps you can take:
1. Check the device specifications to determine if the device is capable of producing ultrasound sound frequencies.
2. Download an app that offers ultrasound ringtones. There are several apps available for both iOS and Android devices.
3. Select and customize an ultrasound ringtone that best suits your needs.
4. Test the ringtone to ensure that it is working properly.
5. Set the ringtone as your device’s default.
It is important to note that the effectiveness of ultrasound ringtones may vary depending on the device and environment. Additionally, some animals may be able to hear these frequencies, so please consider this when selecting a ringtone.