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Test Equipment
Research Library
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Metrico Wireless
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ASTS (Artificial Speech Test Stimulus) is a test signal which accurately represents the full range of sounds and transitions that occur in natural speech. The signal is ideal for performing like-for-like test comparisons and is recommended to be used with PESQ™ and PAMS.
At 30 seconds duration, ASTS is practical for both field and laboratory use and may easily be loaded onto test ...
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Berkeley Varitronics Systems
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The CDMA system place new demands on component manufacturers, test equipment, and measurement techniques. Requirements for suppression of Adjacent Channel Power (ACP) have become more stringent than those required by the older analog systems. GSM systems, IS-54 or IS-136, use constant modulation envelope formats, and the digital TDMA and CDMA standards in North America use quadrature phase-shift ...
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Mariner
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The IPTV industry has made significant strides in video compression, routing, xDSL and set top technology since 2002. Equipment costs continue to improve and network throughput has risen steadily. However, IPTV has yet to achieve the target levels of market penetration and profitability. Recent studies indicate that IPTV service quality and reliability problems are major factors impacting ...
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Metrico Wireless
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This paper outlines methods for evaluating wireless handset performance through the analysis of voice quality measurements. In particular, the paper considers voice quality measurements collected from live‐network tests that are designed to capture the user‐experience. Discussion on methods for voice quality measurement, field‐based test procedures and performance indicators is presented.
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Metrico Wireless
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This paper outlines methods for evaluating wireless handset performance through the analysis of voice quality measurements. In particular, the paper considers voice quality measurements collected from live‐network tests that are designed to capture the user‐experience. Discussion on methods for voice quality measurement, field‐based test procedures and performance indicators is presented.
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