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长时间以来一直认为听觉的部位学说,是无法解释频率差阈这样高达0．3％的频率分辨能力的。因而有时间学说和模式识别方法来加以说明。本文提出一种部位相关模型——邻带差值法,在部位学说和心理物理调谐曲线实验数据的基础上, 利用听觉滤波器相邻通带之间的能量分配关系,完全可以达到千分之几的纯音频率分辨能力。文中用一个标准的1/3倍频程滤波器为例,实验证明了它的可能性。这一模型也可用于语音信号的基频提取和纯音频率的精密测量。
The doctrine of the site, which has long been regarded as auditory, is unable to account for the frequency resolution as high as 0.3% of the frequency difference threshold. Thus there is a time doctrine and pattern recognition methods to illustrate. This paper presents a site-related model - neighborhood difference method, the site theory and psychophysical tuning curve experimental data, based on the use of auditory filter adjacent passband energy distribution between the relationship, can reach thousandths A few pure tone frequency resolution. The article uses a standard 1/3 octave filter as an example, the experiment proves its possibility. This model can also be used for fundamental frequency extraction of speech signals and precision measurement of pure tone frequency.