首页>
外国专利>
METHOD OF MEASURING ANNOYANCE CAUSED BY NOISE IN AN AUDIO SIGNAL
METHOD OF MEASURING ANNOYANCE CAUSED BY NOISE IN AN AUDIO SIGNAL
展开▼
机译:音频信号中噪声引起的烦恼的测量方法
展开▼
页面导航
摘要
著录项
相似文献
摘要
The invention relates to a method of calculating an objective appraisal (NOB) of annoyance caused by noise in an audio signal processed with a noise reduction function. The inventive method comprises a first step consisting in obtaining a pre-defined test audio signal (x[m]) containing a noise-free wanted signal, a noisy signal (xb[m]) obtained by adding a pre-defined noise signal to the test signal (x[m]) and a processed signal (y[m]) obtained by applying the noise reduction function to the noisy signal (xb[m]). Said method is characterised in that it includes a step (a3, a4) consisting in taking frame loudness measurements for the noisy signal (xb[m]) and the processed signal (y[m]) and frame tonality coefficient measurements for the processed signal (y[m]).
展开▼