Gaithersburg, Maryland (PRWEB) June 21, 2012
GL Communications Inc. a leader in providing PC-based test, analysis and simulation products and consulting services to the worldwide telecommunications industry, conveyed today the availability of Voice Quality Testing (VQT) software.
Speaking to the press, Mr. Robert Bichefsky Senior Manager of the company said, GLs Voice Quality Test Tools provide facility to test voice quality with common platform and common software that helps avoid purchasing dedicated software and equipment for various technologies. The test tools provide the means of sending and receiving speech signals through various network interfaces.
GLs VQT (Voice Quality Testing) software then rates the transmissions using ITU standard algorithms PESQ and PSQM. Mean Opinion Score (MOS), speech level, noise level, echo, and other distortions common to voice transmissions are measured and provided automatically, remotely, and repetitively as required by the end user. Typical network applications include VoIP systems, PSTN, ATM networks, Frame Relay, and Wireless Networks.
He added, The GL VQT utilizes three widely accepted algorithms to perform the voice comparisons, the Perceptual Evaluation of Speech Quality (PESQ LQ/LQO/WB) per Rec. P.862/P.862.1, the Perceptual Analysis / Measurement System (PAMS) per Rec. P.800, and the Perceptual Speech Quality Measurement (PSQM) per Rec. P.861.
PAMS predicts overall subjective listening quality (a human’s perception of quality) without requiring actual subjective testing (a very expensive and time-consuming process). PSQM predicts subjective quality of speech codecs without requiring subjective testing. The GL VQT performs PESQ LQ/LQO/WB and PSQM (+) simultaneously, using two voice files (Reference File and Degraded File) and provides the algorithm results in both a graphical and tabular format.
Mr.Bichefsky further added, The GL VQT provides a user-friendly interface, which allows the user to perform manual voice quality assessments by simply entering a Reference File and a Degraded File. The results of the VQT algorithms, PESQ LQ/LQO/WB, PAMS and PSQM, are displayed both in tabular format as well as graphically. Additional analytical results are displayed as part of the assessment such as jitter, clipping, noise level, and delay (end to end as well as per speech utterance).
The user may configure a Rating Criteria for all VQT algorithms as well as the additional analytical results. The rating criteria may be configured for Excellent, Good, Fair, and Poor.
The GL VQT may also be executed in Auto Mode that automatically performs the voice quality algorithms and displays the results.
Important Features
GL Conveys the Availability of its Voice Quality Testing (VQT) Software
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