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Voice quality performance evaluator and method of operation in conjunction with a communication network

  • US 6,330,428 B1
  • Filed: 12/23/1998
  • Issued: 12/11/2001
  • Est. Priority Date: 12/23/1998
  • Status: Expired due to Fees
First Claim
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1. A voice quality performance evaluator employed to evaluate the performance of a voice transmission path, the voice quality performance evaluator comprising:

  • an interface adapted to couple to a voice transmission path under test;

    memory coupled to the interface adapted to store an original voice sample, wherein the original voice sample includes a plurality of original voice sample segments;

    processing circuitry coupled to the interface and to the memory that retrieves the original voice sample from the memory and that transmits the original voice sample on the voice transmission path under test via the interface;

    the processing circuitry receiving a modified voice sample via the interface from the voice transmission path under test, wherein the modified voice sample includes a plurality of modified voice sample segments that correspond to the plurality of original voice sample segments;

    the processing circuitry performing time alignment to align each of the plurality of original voice sample segments with its corresponding modified voice sample segments; and

    the processing circuitry comparing the original voice sample to the modified voice sample in the frequency domain to evaluate the performance of the voice transmission path, wherein in comparing the original voice sample to the modified voice sample, the processing circuitry compares each original voice sample segment with its corresponding modified voice sample segment.

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