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1. WO2015017583 - DÉTECTION DU MOUVEMENT DES SOURCES SONORES POUR FACILITER LA REPRODUCTION DES ESPACES SONORES PHYSIQUES

Note: Texte fondé sur des processus automatiques de reconnaissance optique de caractères. Seule la version PDF a une valeur juridique

[ EN ]

1. A method comprising:

generating unique ultrasonic signals, at least a unique ultrasonic signal being generated for emission from corresponding an acoustic probe transducer;

emitting the unique ulirasonic signal in a direction associated with the acoustic probe transducer;

sensing reflected ultrasonic signals from one or more surfaces, a subset of surfaces being associated with an object;

identifying a position of the object relative to the point in space as a function of characteristics of the reflected ultrasonic signals;

determining a displacement of at least a portion of the object;

identifying an action responsive to the displacement; and

performing the action to modify operation of an audio system.

2. The method of claim 1, wherein performing the action comprises:

changing directivity of sound beams configured to provide spatial audio to an audio space including a recipient of audio as the object.

3. The method of claim 1, wherein performing the action comprises:

detecting a gesture based on the displacement of the at least a portion of the object; and modifying generation of spatial audio based on the gesture.

4. The method of claim 1, wherein determining the displacement comprises:

determining values representative of modified characteristics.

5. The me thod of claim 4, wherein de termining the values representative of the modified characteristics comprises:

detecting a variation in a direction.

6. The method of claim 5, wherein detecting the variation in the direction comprises: detecting a variation in an angle.

7. The method of claim 4, wherein determining the values representative of the modified characteristics comprises:

detecting a variation in a distance.

8. The method of claim 1, further comprising:

detecting locomotion of the object based on the displacement.

9. The method of claim 1, further comprising:

sensing reflected ulirasonic signals from the subset of surfaces associated with the object; one or more variations of distances between the point in space and the subset

of surface to form one or more calculated distance variations; and

identifying a next position of the portion of the object based on the one or more calculated distance variations that is either closer or farther relative to the point in space.

10. The method of claim 1, further comprising:

sensing a first subset of reflected ultrasonic signals from the subset of surfaces associated with the object at a first time point;

sensing a second subset of reflected ultrasonic signals from the subset of surfaces associated with the object at a second time point;

calculating one or more variations of directions between the subset of surfaces at the first time point and the subset of surfaces at the second time point to form one or more calculated direction variations; and

identifying a next position of the portion of the object based on the one or more calculated direction variations that is either in a first lateral direction or in a second lateral direction relative to the point in space.

11. The method of claim 10, wherein the one or more variations of directions comprise: one or more angles,

wherein the one or more calculated direction variations is either in a negative angular direction or in a positive angular direction relative to the point in space.

12. The method of claim 1, further comprising:

detecting a gesture based on the displacement of the at least a portion of the object,

detecting the gesture comprising:

determining a first subset of the unique ultrasonic signals associated with another portion of the object;

identifying the first subset of the unique ultrasonic signals indicate that the another portion of the object is non-transitory;

determining a second subset of the unique ultrasonic signals associated with the portion of the object; and

identifying the second subset of the unique ultrasonic signals indicate that the another portion of the object is transitory.

13. The method of claim 12, further comprising:

characterizing motion of the another portion of the object to form characterized motion; comparing the characterized motion against data representing patterns of motion each of which is associated with a gesture; and

a match of the characterized motion to a pattern of motion to determine an

identified gesture.

14. The method of claim 13, further comprising:

translating the identified gesture to a control action; and

generating control action signal associated with the control action,

wherein the control action signal is configured to cause modified operation of the audio system.

15. The method of claim 12, further comprising:

characierizing motion of the another portion of the object to form characierized motion; comparing the characterszed motion against data representing patterns of motion each of which is associated with a gesture;

detecting no match of the characterized motion to the patterns of motion; and

identifying that the characterized motion is indicative of a change in orientation of the object.

16. An apparatus comprising:

a plurality of transducers configured to emit audible acoustic signals into a region including one or more audio sources;

a plurality of acoustic probe transducers configured to emit ultrasonic signals, at least a subset of the acoustic probe transducers each is configured to emit a unique ultrasonic signal; a plurality of acoustic sensors configured to sense received ultrasonic signals reflected from the one or more audio sources; and

a controller configured to determine a displacement of at least a portion of an audio source of the one or more audio sources.

17. The apparatus of claim 16, wherein the controller comprises:

a locomotion detector configured to detect locomotion of the audio source based on the displacement; and

a gesture detector configured to detect a gesture based on the displacement of the portion of the audio source.

18. The apparatus of claim 17, further comprising.

a motion correlator configured to correlate the displacement with data representing a gesture; and

a gesture identifier configured to identify the gesture;

a gesture translator configured to translate the gesture to a control action command; and 1 action data generator configured to generate the control action command to control operation of the apparatus.

19. The apparatus of claim 16, further comprising:

a phase-shift key signal modulator configured to generate the unique ultrasonic signal.