System and method for estimating whether an object hit or missed a target

Abstract

The subject matter discloses a method for estimating hit or miss of an object directed towards a target, comprising collecting an audio signal over time by an audio sensor located on, inside or near the target, said audio signal is defined by a set of frequencies, identifying changes in the set of frequencies over time, predicting a minimal distance between the object and the audio sensor based on the changes in set of frequencies over time, emitting an indication according to the minimal distance between the object and the audio sensor.

1 . A method for estimating hit or miss of an object directed towards a target, comprising:
 collecting an audio signal over time by an audio sensor located on, inside or near the target, said audio signal is defined by a set of frequencies;   identifying changes in the set of frequencies over time;   predicting a minimal distance between the object and the audio sensor based on the changes in set of frequencies over time;   emitting an indication according to the minimal distance between the object and the audio sensor.   
     
     
         2 . The method of  claim 1 , further comprising identifying that the object is directed towards the target by comparing a pattern from the audio signal with a list of predefined patterns stored in a computerized memory. 
     
     
         3 . The method of  claim 2 , wherein each of the predefined patterns provides information as to frequencies in which audio is emitted due to the movement of a specific object, wherein identifying the object based on a frequency pattern associated with the object in the computerized memory. 
     
     
         4 . The method of  claim 1 , further comprising estimating hit or miss of a plurality of different objects having different frequencies. 
     
     
         5 . The method of  claim 1 , further comprising computing a distance between the object's hit location and the target and determining a hit or miss of the object in the target by comparing the computed distance and a threshold distance. 
     
     
         6 . The method of  claim 5 , wherein computing the distance between the object's hit location and the target is based on the timing in which the object ended its movement, said end of the object's movement is detected when the audio signal ceases to include the object's frequency signature. 
     
     
         7 . The method of  claim 1 , further comprises defining a range of distances from the audio sensor that qualifies as a hit, and determining a hit in case the distance between the hit location and the audio sensor is smaller than the range. 
     
     
         8 . The method of  claim 7 , further comprises defining multiple radii from the audio sensor and determining two radii that define the distance between the object and the audio sensor. 
     
     
         9 . The method of  claim 1 , further comprises defining a distance between the object and the audio sensor that qualifies as a hit. 
     
     
         10 . The method of  claim 9 , further comprises adjusting the distance between the object and the audio sensor that qualifies as a hit based on environmental measurements. 
     
     
         11 . The method of  claim 1 , further comprises determining the distance between the location in which the object ended its movement and the target. 
     
     
         12 . The method of  claim 11 , further comprises detecting that the audio signal ceases to include the object's frequency signature;
 computing a time duration elapsing between a time stamp in which the object was at the minimal distance from the audio sensor and the time of detecting that the audio signal ceases to include the object's frequency signature;   multiplying the time duration with a known or calculated velocity of the object.   
     
     
         13 . The method of  claim 1 , wherein the indication is emitted by at least one of light, sound, RF, and vibration. 
     
     
         14 . The method of  claim 1 , further comprises creating a tracking log, said tracking log comprises the object's location and the detected frequencies over time. 
     
     
         15 . The method of  claim 1 , wherein predicting the minimal distance between the object and audio sensor is performed before the object reaches the minimal distance.