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DTMF-Decoder by tino1b2be
https://tino1b2be.github.io/DTMF-Decoder/
DTMFUtil dtmf = new DTMFUtil (filename); dtmf. decode (); String left_channel = dtmf. getDecoded ()[0]; String right_channel = dtmf. getDecoded ()[1]; // only works if it exists else it throws an indexing error
GitHub - AliMousazadeh/decode-DTMF: Decoding DTMF …
https://github.com/AliMousazadeh/decode-DTMF
decode-DTMF. Decoding DTMF wav audio file. Enter the audio file's path as an string into the command prompt. For more information, visit https://en.wikipedia.org/wiki/Dual-tone_multi-frequency_signaling
DTMF Decoder - Columbia University
https://www.ee.columbia.edu/~dpwe/classes/e4810-2000-09/projrpts/az209/dspproject/dspproject.pdf
fundamental DTMF tones has been found to be 205. So we try to decode the sound file containing DTMF symbols using length-205 DFT. Firstly we separate the whole sound samples into segments of 205 samples each. Then we try to find whether there is a DTMF symbol in each segment. This method is easy to implement and is useful in real-time DTMF processing.
DTMF Decoder - tino1b2be
https://tino1b2be.com/dtmf-decoder/
If you have a signal you want to decoded that is saved as a .mp3 or .wav , it can be decoded this way: DTMFUtil dtmf = new DTMFUtil(filename); dtmf.decode(); String left_channel = dtmf.getDecoded() [0]; String right_channel = dtmf.getDecoded() [1]; // only works if it exists else it throws an indexing error.
Download DTMF Tone Decoder 2019 - softpedia
https://www.softpedia.com/get/Multimedia/Audio/Audio-Mixers-Synthesizers/Spectrum-Analyzer-DTMF-Tone.shtml
DTMF Tone Decoder is a professional software application designed to help audio technicians analyze WAV files. It comes with support for spectrum analyzer, WAV recorder/player with built-in …
c# - Decoding DTMF from a WAV file - Stack Overflow
https://stackoverflow.com/questions/34092954/decoding-dtmf-from-a-wav-file
CalculateGoertzel () returns the power of the selected frequency within the provided sample. Calculate this power for each of the DTMF frequencies (697, 770, 852, 941, 1209, 1336, and 1477 Hz), sort the resulting powers and pick the highest two. If both are above a certain threshold then a DTMF tone has been detected.
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