"Analog signals" are converted to digital signals for processing and transmission. 模拟信号被转换为数字信号进行处理和传输，。
and telecommunications. 模拟信号被用于许多应用中， "Analog signals" are used in many electronic devices， "Analog signals" can be represented by a graph of amplitude versus time. 模拟信号可以用振幅与时间的函数图来表示， ， such as coaxial cable or fiber optics. 模拟信号可以使用各种介质， "Analog signals" are subject to noise and interference. 模拟信号容易受到噪声和干扰，如收音机、电视机和计算机，数字信号更有效率， televisions， "Analog signals" can be amplified to increase their strength. 模拟信号可以被放大以增加它们的强度， "Analog signals" are continuous signals that vary in amplitude and frequency. 模拟信号是连续信号，其振幅和频率不断变化， "Analog signals" can be transmitted over long distances using a variety of media， "Analog signals" are used in many applications， such as radios，也更不易受到噪声和干扰的影响， and computers. 模拟信号被用于许多电子设备中，如音频、视频和电信。
在长距离上传输， which are more efficient and less susceptible to noise and interference. 模拟信号正逐渐被数字信号取代， "Analog signals" are often filtered to remove unwanted noise and interference. 模拟信号常常被滤波以去除不想要的噪音和干扰， video，如同轴电缆或光纤。
"Analog signals" are gradually being replaced by digital signals， such as audio。