Patent ID: 9361893
Filing Date: 2016-06-07
CPC Classification: G10L

Claim Text:
1. A method of detecting whether a transient exists within an audio signal, comprising: using at least one processor to execute a set of steps that includes: dividing a segment of a digital audio signal into blocks; calculating a norm value for each of a plurality of the blocks, resulting in a set of norm values for the plurality of blocks, each said norm value representing a measure of signal strength within a corresponding block; identifying a maximum norm value across said plurality of the blocks; applying a test criterion to the norm values; if the test criterion is not satisfied, outputting a first signal indicating that the segment does not include any transient; and if the test criterion is satisfied, outputting a second signal indicating that the segment includes a transient, wherein the test criterion includes a comparison of the maximum norm value to a different second maximum norm value within the segment, and wherein said different second maximum norm value is determined based on at least one of: (1) a largest norm value prior to a spike that includes said maximum norm value and (2) a largest norm value within a sub-segment following said maximum norm value.