2.0 / December 31, 2014
(4.3/5) (16)
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Description

This App generates DTMF Tones of a 4x4 keypad and It can be used inRobotics and Embedded Systems also .What is DTMF?Dual-tonemulti-frequency signaling (DTMF) is used for telecommunicationsignaling over analog telephone lines in the voice-frequency bandbetween telephone handsets and other communications devices and theswitching center. The version of DTMF that is used in push-buttontelephones for tone dialing is known as Touch-Tone.How it Works?TheDTMF keypad is laid out in a 4×4 matrix in which each rowrepresents a low frequency and each column represents a highfrequency. Pressing a single key sends a sinusoidal tone for eachof the two frequencies. For example, the key 1 produces asuperimposition of tones of 697 and 1209 hertz (Hz). Initialpushbutton designs employed levers, so that each button activatedtwo contacts. The tones are decoded by the switching center todetermine the keys pressed by the user.

App Information DTMF Tones

  • App Name
    DTMF Tones
  • Package Name
    com.thechampanurag.dtmftonegenerator
  • Updated
    December 31, 2014
  • File Size
    350k
  • Requires Android
    Android 2.1 and up
  • Version
    2.0
  • Developer
    thechampanurag
  • Installs
    5,000+
  • Price
    Free
  • Category
    Education
  • Developer
  • Google Play Link

DTMF Tones Version History

Select DTMF Tones Version :
  • 2.0 (2) - Latest Version
  • DTMF Tones 2.0 APK File

    Publish Date: 2017 /9/15
    Requires Android: Android 2.1+ (clair, API: 7)
    File Size: 350.1 kB
    Tested on: Android 4.2 (Jelly Bean, API: 17)
    File Sha1: 7f9f37e9b7507e89832440ab047f20effddb8890
    APK Signature: 34e8c385e26cf552362c249ca4b73e20bfa80877

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DTMF Tones 2.0 APK
This App generates DTMF Tones of a 4x4 keypad and It can be used inRobotics and Embedded Systems also .What is DTMF?Dual-tonemulti-frequency signaling (DTMF) is used for telecommunicationsignaling over analog telephone lines in the voice-frequency bandbetween telephone handsets and other communications devices and theswitching center. The version of DTMF that is used in push-buttontelephones for tone dialing is known as Touch-Tone.How it Works?TheDTMF keypad is laid out in a 4×4 matrix in which each rowrepresents a low frequency and each column represents a highfrequency. Pressing a single key sends a sinusoidal tone for eachof the two frequencies. For example, the key 1 produces asuperimposition of tones of 697 and 1209 hertz (Hz). Initialpushbutton designs employed levers, so that each button activatedtwo contacts. The tones are decoded by the switching center todetermine the keys pressed by the user.
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