APPARATUS AND METHOD FOR DETECTING SOUND
First Claim
1. An apparatus for detecting sound adapted to be worn on both ears of a user so as to detect sounds from behind the user, wherein the sounds include a background noise, said apparatus comprising:
- a plurality of microphones for collecting sounds around the user;
a sound inspecting unit for calculating the feature values of the background noise within a preset time interval and for determining if a latest collected sound satisfies a preset condition;
a direction estimating unit for estimating the occurrence direction of the latest collected sound and for determining if the occurrence direction is within a preset range behind the user, when the preset condition is satisfied;
a background noise removing unit for removing the background noise in the latest collected sound so as to obtain a detected sound, when the occurrence direction is within the preset range; and
an alerting unit for informing the user of the detected sound via an alert message.
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Accused Products
Abstract
An apparatus for detecting sound includes a plurality of microphones, a sound inspecting unit, a direction estimating unit, a background noise removing unit, and an alerting unit. The microphones are used to collect sounds around a user. The sound inspecting unit is used to calculate the feature values of a background noise within a preset time interval, and to determine if a latest collected sound satisfies a preset condition. When the preset condition is satisfied, the direction estimating unit is used to estimate the occurrence direction of the latest collected sound, and to determine if the occurrence direction is within a preset range behind the user. When the preset range is satisfied, the background noise removing unit is used to remove the background noise in the latest collected sound so as to obtain a detected sound. The alerting unit is used to inform the user of the detected sound via an alert message. A method for detecting sound is also disclosed.
173 Citations
22 Claims
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1. An apparatus for detecting sound adapted to be worn on both ears of a user so as to detect sounds from behind the user, wherein the sounds include a background noise, said apparatus comprising:
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a plurality of microphones for collecting sounds around the user; a sound inspecting unit for calculating the feature values of the background noise within a preset time interval and for determining if a latest collected sound satisfies a preset condition; a direction estimating unit for estimating the occurrence direction of the latest collected sound and for determining if the occurrence direction is within a preset range behind the user, when the preset condition is satisfied; a background noise removing unit for removing the background noise in the latest collected sound so as to obtain a detected sound, when the occurrence direction is within the preset range; and an alerting unit for informing the user of the detected sound via an alert message. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method for detecting sound, comprising the following steps:
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(a) collecting sounds around a user, wherein the sounds include a background noise; (b) calculating the feature values of the background noise within a preset time interval, and determining if a latest collected sound satisfies a preset condition; (c) when the preset condition is satisfied, estimating the occurrence direction of the latest collected sound, and determining if the occurrence direction is within a preset range behind the user; (d) when the occurrence direction is within the preset range, removing the background noise in the latest collected sound so as to obtain a detected sound; and (e) informing the user of the detected sound via an alert message. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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Specification