客观世界由物质、能量和信息三大要素组成，一切事物，包括自然界和人类社会活动不断发出信息，信息是表现事物特征的一种普遍形式。在人类群体的社会活动中，需要交换信息，因此采用声音、手势、动作、语言、文字、图形、图象等来传递和交换。而且主要使用语言和文字。在录音? The objective world is made up of the three major elements of material, energy and information. All things, including nature and human social activities, constantly send out messages. Information is a universal form of representing things. In the social activities of human groups, the need to exchange information, so the use of voice, gestures, movements, language, text, graphics, images, etc. to pass and exchange. And mainly use the language and text. Recording?