Headphones that provide binaural sound and receive head gestures
Headphones provide binaural sound to a user wearing the headphones. The headphones store HRTFs of the user and include head tracking and a digital signal processor (DSP). The DSP processes sound into binaural sound that externally localizes to a sound localization point (SLP) at least one meter away from a head of the user. The headphones receive head gestures from the user.
1. A method executed by headphones to externally localize sound to a user wearing the headphones, the method comprising:
storing, in a memory of the headphones, head-related transfer functions (HRTFs) of the user wearing the headphones;
receiving, at a network interface of the headphones, a wireless transmission that includes the sound;
tracking head movements of the user with at least one of an accelerometer, a gyroscope, and a magnetometer in the headphones;
processing, with a digital signal processor (DSP) in the headphones, the sound with the HRTFs selected based on the head movements of the user in order to process the sound into binaural sound that externally localizes to the user at a sound localization point (SLP) in empty space at least one meter away from a head of the user while the head of the user moves with respect to the SLP;
providing, through speakers in the headphones, the binaural sound that externally localizes to the user at the SLP in empty space at least one meter away from the head of the user while the head of the user moves with respect to the SLP;
receiving, at the headphones, a head gesture from the head of the user;
altering, by the headphones, the binaural sound in response to receiving the head gesture from the head of the user; and
receiving, at the headphones, a command from the user to change the sound from externally localizing at the SLP as the binaural sound to internally localizing as stereo sound.
2. The method of claim 1 , wherein the head gesture from the head of the user is received at a kinetic user interface of the headphones.
3. The method of claim 1 , wherein altering the binaural sound in response to receiving the head gesture from the head of the user includes altering the binaural sound from a game that the user is playing.
4. The method of claim 1 , wherein altering the binaural sound in response to receiving the head gesture from the head of the user includes moving a location of the SLP of the binaural sound.
5. The method of claim 1 further comprising:
receiving, at a microphone of the headphones, a voice command from the user that changes the SLP of the binaural sound.
6. The method of claim 1 further comprising:
tracking, with at least one of the accelerometer, the gyroscope, and the magnetometer in the headphones, the head movements of the user with respect to the SLP that is a location of a smartphone or a tablet computer in a hand of the user.
7. The method of claim 1 further comprising:
receiving, at the headphones and from the user, a designation to set the SLP of the binaural sound to a specific location of a smartphone or a tablet computer in a hand of the user.
8. The method of claim 1 further comprising:
receiving, at the headphones and from the user, a designation to set the SLP of the binaural sound to a virtual sound source that is a virtual person in a room where the user is located.
9. The method of claim 1 further comprising:
receiving, at the headphones and from the user, a designation to set a location of an origin of the binaural sound with respect to a head orientation of the user.
10. The method of claim 1 , wherein the memory of the headphones stores personalized HRTFs of the user based on a head size of the user and a distance between ears of the user.
11. A non-transitory computer readable storage medium storing instructions that one or more electronic devices execute to play binaural sound to a person, the method comprising:
playing, through speakers in headphones worn on a head of the person, sound as the binaural sound that externally localizes to the person at a sound localization point (SLP) at least one meter away from the head of the person;
receiving, at the headphones, a command from the person to change the sound from externally localizing at the SLP as the binaural sound to internally localizing as stereo sound; and
playing, through speakers in the headphones and in response to receiving the command, the sound as the stereo sound.
12. The non-transitory computer readable storage medium of claim 11 , wherein the command is a voice command.
13. The non-transitory computer readable storage medium of claim 11 in which the method further comprises:
receiving, at the headphones and from the person, a designation to set the SLP of the binaural sound to a location of a virtual person in a room where the person is located.
14. Headphones, comprising:
speakers that play sound as binaural sound that externally localizes to a user wearing the headphones at a sound localization point (SLP) at least one meter away from a head of the user; and
an interface that receives a command from the user to change the sound from externally localizing at the SLP as the binaural sound to internally localizing as stereo sound.
15. The headphones of claim 14 , wherein the interface is a microphone, and the command is a voice command.