Directional Audio Capturing
First Claim
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1. A system for digitally directive focusing and steering of sampled sound within a target area (400) for producing a selective audio output, comprising one or more broadband arrays of microphones (100, 110), an A/D signal converting unit (200), a control unit (300), characterized in that the control unit (300) comprises:
- receiver means (310) for receiving digital signals of captured sound from all the microphones comprised by the system;
input means (350) for receiving instructions comprising selective position data in the form of coordinates;
signal processing means (330) for choosing signals from a selection of relevant microphones in the array(s) (100, 110) for further processing;
signal processing means (330) for performing signal processing on the signals from the selection of relevant microphones for focusing and steering the sound according to the received instructions;
signal processing means (330) for generating a selective audio output in accordance with received instructions and performed signal processing.
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Abstract
Method and system for digitally directive focusing and steering of sampled sound within a target area for producing a selective audio output accompanying video. In a preferred embodiment, the method and system is characterized by receiving position and focus data from one or more cameras shooting an event, and use this input data for generating relevant sound output together with the picture.
115 Citations
27 Claims
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1. A system for digitally directive focusing and steering of sampled sound within a target area (400) for producing a selective audio output, comprising one or more broadband arrays of microphones (100, 110), an A/D signal converting unit (200), a control unit (300), characterized in that the control unit (300) comprises:
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receiver means (310) for receiving digital signals of captured sound from all the microphones comprised by the system; input means (350) for receiving instructions comprising selective position data in the form of coordinates; signal processing means (330) for choosing signals from a selection of relevant microphones in the array(s) (100, 110) for further processing; signal processing means (330) for performing signal processing on the signals from the selection of relevant microphones for focusing and steering the sound according to the received instructions; signal processing means (330) for generating a selective audio output in accordance with received instructions and performed signal processing. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method for digitally directive focusing and steering of sampled sound within a target area (400) for producing a selective audio output, where the method comprises use of one or more broadband arrays of microphones (100, 110), an A/D signal converting unit (200), and a control unit (300), characterized in that the method comprises the following steps performed by the control unit (300):
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receiving digital signals of captured sound from all the microphones comprised in the system; receiving instructions comprising selective position data, in the form of coordinates, through the input means (350) in the control unit (300); choosing signals from a selection of relevant microphones in the broadband array(s) (100, 110) for further processing, and where the selection performed is based on spectral analyses of the signal; performing signal processing on the signals from the selection of relevant microphones for focusing and steering the sound according to the received instructions; generating one or more selective audio output(s) in accordance with the performed processing. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27)
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Specification