encoder & decoder
for Android phones & tablets
Due to different screen sizes and resolutions the screenshots in this document might differ to what you see on your phones / tablets
DTMF decodes and encodes DTMF (Dual-tone multi-frequency) tones trough the phones speaker and microphone.
Encoder: Always 2 tones are assigned to each key.The length of the tone and the pause between the tones can be set from 35ms to 1500ms.
|1209 Hz||1336 Hz||1477 Hz||1633 Hz|
A total of 36 marco’s can be used to play phone numbers, ham radio auto patch numbers, amateur radio echolink id’s any many more.The 36 macro’s can be saved to the phones/tablets memory. This way a unlimited amount of macros can be used. The DTMF tone length and the pause between the tones can be adjusted.
Decoder: The decoder detects the DTMF tones and prints them on the screen. A sophisticated algorithm detects the tones even in noisy environments.
the main screen
Dialpad – To play a DTMF tone just press a key on the dial pad. If the buttons are pressed very fast the keys will be added in a queue.
Macro’s: There are 36 macro buttons on the bottom of the main screen. On most screen sizes there is not enough space to display all macros but the macro can be scrolled up and down.
To play a macro just press the macro button.
edit a macro
By long-pressing a macro button on the main screen the macro edit screen opens. The macro name can be entered on the top and the DTMF tone sequence can be entered by pressing the keypad buttons. The macro will be automatically saved by pressing the "back" button of the phone/tablet.
saving macro "sets"
All 36 macros can be saved in "sets" to the phones/tablets memory. To open the "macro set screen" click the on the main screen. On older phones (older than Android 4.0) the "macro set screen" can be accessed through the menu button.
To save a new "set" enter a name on the top and press the "save" button. The current 36 macros will be saved to the phones/tablets storage. After the macro is successfully saved the name will appear in the list below.
A saved "set" can be loaded by pressing a name in the list.
A "set" can be deleted by pressing the "X" next to the name in the list.
The DTMF tone length and the space between the tones can be adjusted in the setup screen by pressing the "setup" button on the main screen.
The "space length" adjustment is the length of a "space" in a macro
the decoder screen
The "decoder" screen can be accessed by pressing the "receive" button on top of the main screen. The decoder detects the DTMF tones and prints them on the screen. A sophisticated algorithm detects the tones even in noisy environments.
For any questions or for feedback and suggestions please email firstname.lastname@example.org