Patent Document ID: 9876901
Application ID: 15261635

Base Claim:
1. A computer-implemented method to evaluate audio quality of a real-time communication system that includes at least two communication devices, comprising: receiving a reference script, the reference script containing linguistic contents in text form of an audio signal sent to at least one of the communication devices, wherein the reference script excludes audio; receiving the audio signal; generating an evaluation transcript in text form by applying speech recognition to the audio signal; comparing the reference script with the evaluation transcript; generating a call quality metric of the real-time communication system based on the comparison; determining a duration of a speaking turn; determining a duration of a listening turn from the audio signal being received by one of the communication devices; and estimating a communication delay of the audio signal based on the duration of the speaking turn and the listening turn.

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Claim 4:
4. The computer-implemented method of claim 1 , said determining a duration of the listening turn including: activating a voice activity detection process based on the duration of the speaking turn; and determining when the received speech in the listening turn ends using the voice activity detection process, wherein determining the duration of the listening turn is based on determining when the listening turn ends.