Wearable electronic device displays a sphere to show location of binaural sound

1. A method executed by one or more electronic devices, the method comprising:

designating, with a handheld portable electronic device (HPED) held in a hand of a user, a sound localization point (SLP) in empty space on top of a physical object from where binaural sound will originate to the user;

receiving, at a wearable electronic device (WED) worn on a head of the user and from the HPED held in the hand of the user, a wireless signal that provides a location of the SLP in empty space on top of the physical object from where the binaural sound will originate to the user; and

processing, by a digital signal processor (DSP), sound with head-related transfer functions (HRTFs) to generate the binaural sound that externally localizes to the user at the location of the SLP in empty space on top of the physical object; and

minimizing perceptional errors where the binaural sound originates to the user by displaying, with the WED worn on the head of the user, a virtual image shaped as a sphere at the location of the SLP in empty space on top of the physical object from where the binaural sound originates to the user, wherein the SLP occurs inside the sphere.

2. The method of claim 1 , wherein the binaural sound is a voice of another user communicating with the user during a telephone call, and the voice externally localizes to the user at the virtual image shaped as the sphere that is at the location of the SLP in empty space on top of the physical object.

3. The method of claim 1 further comprising:

processing, by the DSP, the sound with the HRTFs to generate SLPs of the binaural sound that move through the empty space in a trajectory having a shape of an arc; and

displaying, with the WED worn on the head of the user, virtual images that follow the trajectory having the shape of the arc to show the user the trajectory of the SLPs of the binaural sound moving through the empty space.

4. The method of claim 1 further comprising:

sharing, from an intelligent user agent (IUA) of another user to an IUA of the user, sound localization information (SLI) that includes where to externally localize the binaural sound to the user; and

selecting, by the IUA of the user and based on the SLI shared from the IUA of the another user, a SLP for the binaural sound that externally localizes to the user.

5. The method of claim 1 , wherein the HPED is a handheld pointing device that the user holds and designates the location of the SLP in empty space on top of the physical object, and the sound is music.

6. The method of claim 1 further comprising:

displaying, with the WED, a virtual monitor in a field of view (FOV) of the user;

processing, by the DSP, the sound with the HRTFs to generate the binaural sound that originates from the virtual monitor;

tracking, with the WED, head movements of the user to determine when the FOV of the user no longer includes the virtual monitor; and

ceasing to provide the user with the sound that originates from the virtual monitor upon determining the FOV of the user no longer includes the virtual monitor.

7. The method of claim 1 further comprising:

processing, by the DSP, the binaural sound to localize only in a zone that matches a portion of a virtual environment in a range of gaze of the user while not providing sound in the virtual environment that is outside the range of gaze of the user.

8. A method executed by one or more electronic devices, the method comprising:

designating, with a handheld pointing device that is in a hand of a user and pointed at a location in empty space on a surface of a physical object, a sound localization point (SLP) for binaural sound;

wirelessly communicating, between the handheld pointing device that is in the hand of the user and a wearable electronic device (WED) worn on a head of the user, to provide the WED with the location in empty space on the surface of the physical object that includes the SLP for the binaural sound;

processing, by a digital signal processor (DSP), sound with head-related transfer functions (HRTFs) to produce the binaural sound that originates at the SLP at the location in empty space on the surface of the physical object; and

improving an experience of the user hearing the binaural sound by displaying, with the WED worn on the head of the user, an augmented reality (AR) image shaped as a sphere at the SLP at the location in empty space on the surface of the physical object with the SLP is inside the sphere.

9. The method of claim 8 further comprising:

providing a voice of a person as the binaural sound that externally localizes at the AR image shaped as the sphere at the location in empty space on the surface of the physical object.

10. The method of claim 8 further comprising:

processing, by the DSP, an alert sound with the HRTFs; and

assisting the user in distinguishing between naturally occurring sound and the binaural sound by playing the alert sound that externally localizes at the location in empty space on the surface of the physical object.

11. The method of claim 8 , wherein the handheld pointing device is a smartphone that designates the location in empty space on the surface of the physical object for the SLP, and the DSP processing the sound is in the smartphone.

12. The method of claim 8 further comprising:

improving execution of the method by processing the sound with the DSP in a server; and

transmitting the binaural sound processed by the DSP in the server to the WED over a wireless network.

13. The method of claim 8 further comprising:

improving performance of the DSP processing the sound by storing the HRTFs in a cache memory in the WED, wherein the DSP is located in the WED.

14. A non-transitory computer-readable storage medium that stores instructions that one or more electronic devices execute to execute a method comprising:

designating, with a handheld portable electronic device (HPED) that is in a hand of a user and a location in empty space at a physical object in a room with the user, a sound localization point (SLP) for binaural sound;

wirelessly communicating, between the HPED in the hand of the user and a wearable electronic device (WED) worn on a head of the user, to provide the WED with the location in empty space at the physical object that includes the SLP for the binaural sound;

processing, by a digital signal processor (DSP), sound with head-related transfer functions (HRTFs) to produce the binaural sound that originates at the SLP at the location in empty space at the physical object; and

displaying, with the WED worn on the head of the user, an augmented reality (AR) image shaped as a sphere at the location in empty space at the physical object, wherein the SLP for the binaural sound is in the sphere.

15. The non-transitory computer-readable storage medium of claim 14 with the method further comprising:

processing, by the DSP, the sound with the HRTFs to produce the binaural sound that originates at a second SLP on a surface of the physical object; and

displaying, with the WED worn on the head of the user, an AR image shaped as a three-dimensional (3D) cube at a location on the surface of the physical object, wherein the second SLP occurs inside the 3D cube.

16. The non-transitory computer-readable storage medium of claim 14 , wherein the HPED is a smartphone.

17. The non-transitory computer-readable storage medium of claim 14 with the method further comprising:

processing, by the DSP, the sound with the HRTFs to generate SLPs that move through an empty space in the room in a trajectory having an S-shape; and

displaying, with the WED worn on the head of the user, virtual images that follow the trajectory having the S-shape to show the user the trajectory of the SLPs moving through the empty space in the room.

18. The non-transitory computer-readable storage medium of claim 14 with the method further comprising:

providing a voice of a person as the binaural sound that externally localizes to the SLP inside the sphere.

19. The non-transitory computer-readable storage medium of claim 14 with the method further comprising:

tracking, with the WED, a gaze of the user; and

switching the binaural sound to stereo sound when the gaze of the user is no longer directed to the sphere.

20. The non-transitory computer-readable storage medium of claim 14 , wherein the physical object is a speaker, and the sphere occurs on a surface of the speaker.