Patent ID: 7912226

Claim:
A method of automatic measurement of audio presence and level by direct processing of a data stream representing an audio signal in a processor, comprising: (a) extracting, in the processor, sub-band data from the data stream; (b) dequantizing and denormalizing, in the processor, the extracted sub-band data; (c) measuring, in the processor, an audio levd for the dequantized and denormalized sub-band data without reconstructing the audio signal using channel characteristics; (d) comparing, in the processor, the measured audio level against one or more thresholds; and (e) triggering, in the processor, an alarm as determined by the comparing step (d), wherein the one or more thresholds are set to generate the alarm based on when an average of the audio level in the data stream is too high or too low, in order to monitor the audio presence and level within the data stream and to adjust the audio level as desired.