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Targeted Sound Discrimination in Audio Recordings

IP.com Disclosure Number: IPCOM000210034D
Publication Date: 2011-Aug-22
Document File: 3 page(s) / 47K

Publishing Venue

The IP.com Prior Art Database

Abstract

Disclosed is a method to use multiple microphones around the perimeter of an audio/video (AV) device to allow for triangulation of the direction of the sounds and associate metadata consisting of a relative or a definitive source (object or direction) of the sound. This allows technicians to more accurately eliminate unwanted background sounds from their recordings.

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Targeted Sound Discrimination in Audio Recordings

There are many situations, when conducting audio/video recordings on such a device, that it is not desirable to include sounds from particular locations or objects. Examples could be: noisy nearby fans at a game, white noise from a particular direction during a conversation, etc.

The disclosed invention uses multiple microphones around the perimeter of an audio/video (AV) device to allow for triangulation of the direction of the sounds and associate metadata consisting of a relative or a definitive source (object or direction) of the sound.

Image recognition could be used to associate a sound to a particular object, perhaps selected on a preview screen by means of a combination triangulation and some other distinction like moving of lips or general movement, etc.

The result would be the ability to white-list or blacklist audio signals based on direction or object either in real time or after the fact, using the associated metadata with the recording.

Components:


1. Periphery of microphones with known location for each (Figure 1)


2. Image recognition engine


3. Processor


4. Audio Triangulation

Process:


1. Selection

A. On the AV device, the user selects an area on the preview screen which represents the direction from which the undesired sound is originating. The AV device could continue to update the direction for the user as they face different directions using an accelerometer to measure change in direction relative to the original desired blacklist location(s). (Figure 1a)

B. User selects an object as either a blacklist or white-list objec...