What is DTMF Decoder?

DTMF Decoder

DTMF Decoder is a handy tool that helps process dial tones from touch-tone phones. It can even log the phone numbers being dialed! It works by grabbing the tone signal from the phone line or radio receivers and sending it to your computer's soundcard for processing.

How Does DTMF Decoder Work?

This application does something pretty cool—it listens to captured sounds and figures out their frequencies. By doing this, it can match these frequencies to specific keys on the phone's number pad. This means it can tell you what phone number was dialed and when!

Getting Started

Before you dive in, you'll need to set up your audio capture device. This could be a microphone connected to your computer. Don't forget to tweak your audio mixer settings too!

Main Window Features

The main window has two green bars that pick up incoming tones. Each bar has its own frequency range assigned. For everything to work smoothly, you need to set the threshold correctly (that's shown as a red line). To keep things simple, a tone is considered good when its level is about 6 dB above that threshold.

Adjusting Volume Settings

If you change the volume on your soundcard, remember you'll need to readjust that threshold! Otherwise, the tones you're capturing might not register at the right level.

Testing Your Setup

DTMF Decoder comes with a test example so you can see how well it performs and learn how to use it better. Plus, it lets you set minimum tone and break times!

Saving Your Data

The great part? The data captured is automatically saved into a text file on your computer for easy access later on.

Who Can Use DTMF Decoder?

This tool is perfect for audio techs and forensic experts who want to find out which numbers were dialed. Setting it up isn’t too tough—especially if you've got some knowledge in this area.

If you're interested in trying out DTMF Decoder, it's definitely worth checking out!

How Download Works

Go to the Softpas website, press the 'Downloads' button, and pick the app you want to download and install—easy and fast!