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声音是由振动产生的波,振动越强,声音越大。连续振动的声波通过声音一电压转换器(如麦克风)后变成模拟电压信号,它的幅度大小表示声音强弱。在数字音频技术中,把表示声音强弱的模拟电压用数字表示。如0.5V电压用数字20表示,2V电压用80表示。模拟电压幅度,即使在某电平范围内,仍然可以有无穷多个,如+1.2V,+1.21V,+1.215V……而用数字来表示音频幅度时,只能把无穷多个电压幅度用有限个数字来表示,这称之为量化。计算机的基本数制是二进制,为此我们也要把声音数据
Sound is generated by the vibration of the wave, the stronger the vibration, the louder the sound. Continuous vibration of the sound wave through a sound-voltage converter (such as a microphone) into an analog voltage signal, its magnitude indicates the sound intensity. In digital audio technology, the analog voltage that represents the strength of the sound is represented numerically. Such as 0.5V voltage with the number 20 that 2V voltage with 80 said. Analog voltage amplitude, even in a certain range of levels, can still have an infinite number, such as + 1.2V, +1.21V, +1.215 V ... ... And the figure that the audio amplitude, only an infinite number of voltage amplitude With a finite number to represent, this is called quantification. The basic computer system is binary, for which we have to put the sound data