Perceptual quality of a processed signal obtained by processing an original signal having silent periods is evaluated. Silent portions and speech portions of the original signal and corresponding silent portions and speech portions of the processed signal are identified, and the silent portions of the processed signal are evaluated in accordance with a function of amounts of energy contained in the silent portions of the processed signal, corresponding silent portions of the original signal, and an amount of energy in speech portions of the original signal. In one embodiment, the original signal and the processed signal are segmented into frames, frames of the original signal that represent speech and frames of the original signal that represent silence are identified, and the evaluation produces a mean opinion score (MOS).

A qualidade perceptual de um sinal processado obtido processando um sinal original que tem períodos silenciosos é avaliada. As parcelas silenciosas e as parcelas do discurso das parcelas silenciosas originais do sinal e corresponder e de parcelas do discurso do sinal processado são identificadas, e as parcelas silenciosas do sinal processado são avaliadas de acordo com uma função das quantidades de energia contidas nas parcelas silenciosas das parcelas silenciosas processadas do sinal, corresponder do sinal original, e de uma quantidade de energia em parcelas do discurso do sinal original. Em uma incorporação, o sinal original e o sinal processado são segmentados nos frames, frames do sinal original que representa o discurso e os frames do sinal original que representa o silêncio são identificados, e a avaliação produzem uma contagem média da opinião (MOS).

 
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