you need a DAC, not just a buffer.
Buy a new digital ready tv, get a digital receiver Sky or Freeview for your analogue tv
digital signal just have level 1 or zero . but in the real life digital signal are not produced directly.just think when electricity generates what happens ? we gate a sinusoidal wave which have different-2 amplitude on different time.My mean there are no fixed level 0,1. Think when wheel of vehicle are moving they also generate analog signal.We can convert an analog signal to digital signal by using ADC(analog to digital converter).
the digital signal is converted to analog signal after using by transmitted antenna
Analog signals are transmitted as electrical waves.
Simulink provides a Simulink model for digital to analog converter. we can use such blocks or models for this purpose.You can use xPC target built in Simulink, but you will have buy a xPC card to install on your target computer and run it in host computer.
You need to make a distinction between analog and digital signals, and analog and digital data. Digital data can be sent on an analog signal by using a modem. Digital data sent on a digital signal is done over a wire using voltage pulses at two or more levels. Digital signals can't travel very far without amplifiers, but analog signals can cover huge distances, such as with satellite communications and even communications with deep space probes.
sampling is a one type of process use for converting into analog signal to digital signal.
Voice being analog signal will be converted by an ADC whereby the output is a logic representation of the analog input
There are chips that will convert a analog to a digital form. It works on the principle of comparing the input to a reference voltage and outputting the bits [digital] as a value compared to the reference voltage. it can be 4,8,12, of digital data for a 12bits the LSB is 2.4mv.
One can convert an analog TV to HDTV by using a set top box or digital analog tuner converter box. One does require a HD ready TV though to be able to watch the HD channels.
The frequency of the carrier of an analog signal can be anything you want it to be. Just be sure you notify the intended recipient of the frequency you're using to transmit, otherwise he won't be able to find your signal on his radio dial and receive your message.
Sound is commonly translated into an analogue signal using a microphone. This is achieved with the help of the two electrically charged plates that sound has.Ê