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> digital definitely captures less information than analog If your sampling frequency is high enough, digital captures the signal perfectly. Analog captures le

• kazinator 4y ago
  Neither is true. Whether a digital or analog channel carries more information and less noise depends entirely on the channel parameters. An ideal analog channel is noise-free and has infinite frequency response. An ideal digital channel carries infinite bits per second (and can be carried by the former analog channel). All digital communications is ultimately carried in an analog medium: e.g. twisted pair ethernet cable or what have you. The performance of that communication is within the limits established by the analog container. The simple analog coding techniques, though, are inflexible with regard to reallocating noise. E.g. an analog channel is noisy, we can use it to transmit digital information that is noise free, such as UTF-8 text. We reallocate the noise into a bandwidth limitation.