Sound localization system based on analysis of the sound field
First Claim
1. A method for localizing a sound in multiple audio channels, comprising:
- analyzing power in multiple audio channels to determine a power angle of the power of the sound in the multiple audio channels;
determining whether to select a steering angle or the power angle to localize the sound; and
localizing the sound based on the determination whether to select the steering angle or the power angle to localize the sound.
5 Assignments
0 Petitions
Accused Products
Abstract
The beginning detection, accommodation and frequency bias properties of the human hearing mechanism have been modeled to create systems that can detect directional transients (“sound events”) in a sound field and localize them. These systems break down a sound field into sound events and non-sound events and separately localize the sound events and non-sound events. Sound events are generally identified according to the frequency bias and beginning detection properties. Once detected, the sound events are generally localized according to differential steering angles (steering angles to which the steady-state signals have been accommodated) or ordinary steering angles, both of which reflect the direction of a sound event indicated during the rise-time of the sound event. When no sound events are detected, non-sound events are localized according to a steering angle that does not reflect rapid motion.
130 Citations
46 Claims
-
1. A method for localizing a sound in multiple audio channels, comprising:
-
analyzing power in multiple audio channels to determine a power angle of the power of the sound in the multiple audio channels; determining whether to select a steering angle or the power angle to localize the sound; and localizing the sound based on the determination whether to select the steering angle or the power angle to localize the sound. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
-
-
25. A method for localizing a sound produced by a plurality of input channel pairs each comprising multiple audio channels, comprising:
-
analyzing power in one or more input channel pairs to determine a power angle of the power of the sound in the plurality of input channel pairs; determining whether to select a steering angle or the power angle to localize the sound; and localizing the sound in the plurality of input channel pairs based on the determination whether to select the steering angle or the power angle to localize the sound. - View Dependent Claims (26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42)
-
-
43. A computer-readable medium comprising computer-executable instructions for localizing a sound, the computer-executable instructions comprising logic for performing the steps of:
-
determining a steering angle of the sound; analyzing power in multiple audio channels to determine a power angle of the power of the sound in the multiple audio channels; determining whether to select the steering angle or the power angle to localize the sound; and localizing the sound based on the determination whether to select the steering angle or the power angle to localize the sound.
-
-
44. A computer-readable medium comprising computer-executable instructions for localizing a sound, the computer-executable instructions comprising logic for performing the steps of:
-
determining a steering angle of a sound in the plurality of input channel pairs; analyzing power in one or more input channel pairs to determine a power angle of the power of the sound in the plurality of input channel pairs; determining whether to select the steering angle or the power angle to localize the sound; and localizing the sound in the plurality of input channel pairs based on the determination whether to select the steering angle or the power angle to localize the sound.
-
-
45. A sound localizer for localizing a sound produced by an input channel pair comprising multiple audio channels, comprising:
-
means for determining a steering angle of the sound, where the means for determining the direction is in communication with the input channel pair; means for analyzing power in multiple audio channels to determine a power angle of the power of the sound, where the means for analyzing the power is in communication with the input channel pair; means for determining whether to select the steering angle or the power angle to localize the sound; and means for localizing the sound according to one of the means for determining the steering angle of the sound or the means for determining the power angle of the power of the sound based on the means for determining the steering angle or the power angle to localize the sound, where the means for localizing is coupled with the means for determining the steering angle of the sound, the means for determining the power angle of the power of the sound, and the means for determining whether to select the steering angle or the power angle to localize the sound. - View Dependent Claims (46)
-
Specification