Abstract: A device for providing sound-based user interface is described. The device can include a housing including at least front and back surfaces. The device can include at least two microphones disposed inside the housing with the at least two microphones to receive sound data associated with a tactile motion input on one of the at least front and back surfaces of the housing. The device can include a sound processor disposed inside the housing and communicatively linked with the at least two microphones. The sound processor is able to compare the sound data received at each of the at least two microphones to determine a direction of the tactile motion input. A host processor is disposed inside the housing and communicatively linked to the sound processor. The host processor can control a command of the device based at least in part on the determined direction of the tactile motion input.