对语音谱图的黑白负片、正片及其乘积正片进行空间编码，在白光处理器中可得到按强度假彩色编码的语音谱图。

By means of spatial encoding technique for black-white negative, positive and product positive of spectrogram an intensity pseudocolor-coded spectrogram is obtained in a white-light optical processor.

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其彩色负片分别用红、绿、蓝滤色镜及普通放大机分色放大，制成黑白正版。

The magnified black white positive separation plates of the negative color film were made with an ordinary enlarger and the filters of red, green and blue.

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