SIMPLE DTMF DECODER PULLS NUMBERS FROM YOUTUBE VIDEOS 市內電話 來電顯示



http://hackaday.com/2011/04/02/simple-dtmf-decoder-pulls-numbers-from-youtube-videos/

市內電話 來電顯示

SIMPLE DTMF DECODER PULLS NUMBERS FROM YOUTUBE VIDEOS
簡單 DTMF雙音多頻信號（Dual-Tone Multi-Frequency, DTMF）插件 數字解碼 來自 Youtube
dtmf_decoder
有些 來電 我們 覺得 想要 掛斷，現在的 市內電話 類比式  通訊 使用 Dual Tone Multi Frequency (DTMF) 訊號 讓我們 撥出號碼 或是 得知來電號碼 

相關訊息你可以看看 LucidScience    http://lucidscience.com/pro-phone%20number%20decoder-1.aspx

他的  DTMF decoder box 解碼盒 使用 CM8870 DTMF decoder chip 晶片所有你該需要的他都幫你完成了
他會輸出 4-bit binary code 代表 數字按鈕上的位置 . 他做了一個 顯示板(arduino ) 電路 來 解碼 顯示 感知的 
電話線 從 RJ11 輸入 然後 你可以 往下連結 其他電話 

Be sure to stick around to see his DTMF decoder circuit in action.









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