Efficient apparatus and method for audio signature generation using audio threshold

摘要

An automatic content recognition system that includes a user device for the purpose of capturing audio and generating an audio signature. The user device may be a smartphone or tablet. The system is also capable of determining sound level at a user device and refraining from audio monitoring and/or generating audio signatures when the sound level is below a threshold. Sound level may also be used to reduce the frequency of audio monitoring and/or signature generation. The system may have a database within the user device or the user device may communicate with a server having a database that contains reference audio signatures.

主权项

1. An apparatus for monitoring audio information comprising:
a probe component to convert audio information to an electrical signal; a sound level detector; an audio signature generator responsive to said probe component and said sound level detector configured to generate an audio signature at a first frequency when the sound level is at or above a threshold and to generate an audio signature at a reduced frequency compared to the first frequency when the sound level is below a threshold; a transmitter responsive to said audio signature generator that transmits any generated audio signature over a communication channel to a remote server for potential identification of the content represented by the audio signature.