Wireless Acoustic Com­mu­ni­ca­tion

Au­dio­com is an open-source set of ed­u­ca­tional GNU Oc­tave (MATLAB) scripts to stegano­graph­i­cally em­bed data into au­dio sig­nals. The data can then be trans­mit­ted be­tween smart­phones or from a loud­speaker to any mi­cro­phone. Our Au­dio­com soft­ware is pri­mar­ily used for proof of con­cepts, ex­per­i­ments, teach­ing and ed­u­ca­tional pur­poses. It is main­tained by Love­field Wire­less.

The acous­tic ca­pa­bil­i­ties (high qual­ity minia­ture speak­ers and mi­cro­phones) and the fast pro­ces­sors of mod­ern smart­phones al­low for the trans­mis­sion of data among phones, at low bi­trate through the au­dio chan­nel. Acous­tic data trans­mis­sion for one-way broad­cast com­mu­ni­ca­tion (from one de­vice to a num­ber of phones) is par­tic­u­larly at­trac­tive in sce­nar­ios that con­tain sound in­fra­struc­tures (such as shop­ping malls, movie the­aters, or open-air con­certs). The Au­dio­com soft­ware sup­ports real life ex­per­i­ments to test the ro­bust­ness and re­li­a­bil­ity of such au­dio com­mu­ni­ca­tion ap­proaches.

Time-Fre­quency sig­nal power spec­trum of one spo­ken word, in deci­bels rel­a­tive to full scale (dBFS).

Download

Down­load the code here. Devel­op­ers might want to clone from bit­bucket:

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