Howtosignalprocessing
- What is meaning of dual tone multi frequency?
- What is double tone of a signal?
- What is DTMF technology?
What is meaning of dual tone multi frequency?
Dual tone multi-frequency (DTMF) is the sounds or tones generated by a telephone when the numbers are pressed. These tones are transmitted with the voice channel. DTMF is used to control automated equipment and signal user intent, such as the number they wish to dial.
What is double tone of a signal?
It consists of simultaneously injecting two sinusoidal signals of different frequencies (tones) into the component or system. Intermodulation distortion usually occurs in active components like amplifiers, but can also occur in some circumstances in passive items such as cable connectors, especially at high power.
What is DTMF technology?
Dual tone multi frequency (DTMF) is a technology used with touch tone phones, best known to users as the sound made when pressing a number key. It signals the phone company that you want to make a call and sends a command to the switch.
