压缩式驱动器主观音质评价方法的比较

Comparison of Different Methods for the Subjective Sound Quality Evaluation of Compression Drivers

提出了一种基于感知模型的声辐射系统音质评价方法。采用此模型可应用Moore提出的参数以测试其是否适用于间接辐射扬声器的音质评价。对3种压缩式驱动器进行了测试,并且记录了它们在各种测试信号以及各种输入电压条件下的测试结果。基于上述实验结果,从不同的角度提出了解决该问题的方法:(a)考虑经典的音质评价参数,如粗糙度、尖锐度和音调;(b)应用由Moore建议的从感知模型获取的参数。此外,还进行了一项针对25人的心理声学实验,尽管实验结果只是初步的并极大依赖于参考信号,但仍然能够表明其与Rnonlin值的良好相关性。

In this paper, an approach to the problem of sound quality evaluation of radiating systems is considered applying a perceptual model. One of the objectives is to use the parameter proposed by Moore to test if it provides satisfactory results when it is applied to the quality evaluation of indirect radiation loudspeakers. Three compression drives are used for these proposals. Recordings with different test signals at different input voltages are done. Using this experimental base, an approach to the problem from different points of view is done： a） Taking in consideration classic sound quality parameters such as roughness, sharpness and tonality. b） Applying the parameter suggested by Moore obtained from the application of a perceptual model. Moreover, a psychoacoustic experiment is made on a population of 25 people. The results, although preliminary and strongly dependant on the reference signal used to obtain Rnonlin, show a good correlation with the Rnonlin values.