PESQ Basic Plus

All modern communications use some form of signal compression algorithm. In addition, modern speech and audio codes use perceptual information to decide which parts of a signal to send and which to discard.

QoE Systems' PESQ Algorithm Firmware supplies the algorithm necessary to interpret the end-to-end quality, applying the PESQ (Perceptual Evaluation of Speech) algorithm to provide a MOS-score (Mean Opinion Score).

PESQ is the ITU-T standard (P.862) for measuring the voice quality of communications networks. PESQ measures one-way quality: a signal is injected into the system under test, and the degraded output is compared by PESQ with the input (reference) signal. Modeling perception - specifically human auditory perception - is the core concept behind PESQ.

Simple measures like SNR and frequency response do not give an accurate indication of the quality of these modern systems. Traditionally, MOS is the result of subjective tests with panels of human listeners (ITU-T P.800/P.830); however, such tests are expensive and are impractical for testing.

In contrast, QoE Systems' PESQ Algorithm Firmware can be used in a wide range of measurement applications (e.g., codec development, equipment development, selection and optimization, as well as monitoring). Being fast and repeatable, QoE Systems' PESQ Algorithm makes it possible to perform extensive testing over a short period and also enables the quality of time-varying conditions to be monitored.

The QoE Systems PESQ Basic Plus Algorithm adds the capability to test both narrow and wide-band voice/audio with either 8 or 16 bit resolution.

 

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