Adapt Sound is a feature found on some Samsung smartphones that allows users to personalize and optimize their audio experience based on their hearing ability. The feature creates a custom sound profile by playing a series of tones across multiple frequencies and volumes that the user responds to by selecting the ones that are heard the best. Once the sound profile is created, it adjusts the phone's audio output to better fit the user's unique hearing ability, ensuring that the sounds are balanced and clear for the user. In essence, Adapt Sound is used to enhance the audio quality of Samsung smartphones for individual users by tuning it to their specific hearing capabilities.