Mp3 To Pcm Converterįree online tool to convert MP3/WAV to G.711 u-law, G.722, or G.729 for BroadWorks or Asterisk G711 File Converter This free tool will convert just about any DRM-free media file into audio that's compatible with most telephony vendors' Music on Hold and IVR Announcements. Circuit part : The connections are really simple if you are using 0.5watt speaker then directly connect the +ve pin of speaker to digital pin 11 on Arduino & -ve pin of speaker to gnd & if using 3 watt speaker then use a tip120 transistor & connect the 11 of Arduino to the base of transistor and -ve pin of speaker to the collector of the transistor & emitter of the transistor to the gnd pin on Arduino.
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