| 摘要 |
Measuring the quality of speech signals in a telecommunications system is more effectively accomplished by first estimating and eliminating the effects of linear filtering that are associated with the telecommunications system. In doing so, a frequency domain representation of a test speech signal and a reference speech signal are generated. The frequency domain representations may take the form of bark-time frame matrices. Each of a plurality of frequency weights are then estimated based on the frequency domain representations of the test and reference speech signals, where each of the plurality of frequency weights corresponds with a different frequency band, and where the frequency weights reflect the linear filter characteristics of the telecommunications systems. The frequency domain representation of the reference signal is then adjusted by applying each of the frequency weights to a corresponding component of the frequency domain representation of the reference signal. The frequency representation of the test signal and the adjusted frequency domain representation of the reference signal are compared, and speech quality is measured based on the comparison. |
