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Library DTMF 2.0

By Sergey Badlo

Commercial 11 Feb 2013

In category

Components > Communications > Other

Description

The API of the library DTMFW.

System requirements and dependencies:

  • Win32 (NT/2003/XP/7/8) ... 64-bit is not tested.
  • The presence of sound card
  • Module and a module for non-commercial use compiled for IDE Delphi 2010 and TurboDelphi-Lite (over BDS-2006)
  • Module for commercial use are available on request
  • DTMFW - is an expanded version of the library, published in zh.Radiolyubitel, Minsk, 2009, ยน 3, p.32-36. Basic version available here.
This is a library for spektroanaliza REALTIME (with sound card) and OFFTIME (dump data from SHARC EZ-Kit and files WAV/MP3), generating sinusoidal signals with defined porosity and the hardware-software generation (and control) dumps random numbers based on the sound card .

The library provides:

  • Encoding (generation) and decoding DTMF signals (DTMF) realtime (with sound card) and offtime (from files WAV/MP3).
  • Spektroanaliz (using FFT) realtime and offtime (from files WAV/MP3/SHARC).
  • Realtime oscilloscope and offtime (data from files WAV/MP3/faylov SHARC).
  • The multiplication of the spectra obtained at the window: rectangular (level 0 dB), Hemming (-54 dB), Blackman-Harris (on levels -61 dB, -67 dB, -92 dB).
  • Analysis of the average noise level in the spectrum realtime and offtime.
  • The detection of the amplitude and frequency of the pitch (harmonics) in the spectrum.
  • Measurement of the current level of the signal amplitude with a recording device by default.
  • Detection (trigger silence) exceeded the threshold level of the signal c adjustable threshold level signal and off-delay n [ms], and the ability to record fragments of audio file formats including WAV PCM.
  • Hardware and software random number generation (RNG) based on a sound card c opportunity to file archiving and retrieval issue in real time.
  • Analysis of the statistical distribution of data sample RNG realtime.
  • Generate a sinusoidal signal with set frequency and duty cycle.

Informations

  • Status: Fully functional
  • Source: C
  • Price: $50
  • Size: 1 493 120kB

Platforms:

  • Delphi 2006 (Win32)
  • Delphi 2010

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