NOVEL TECHNIQUE OF CUSTOMIZING THE AUDIO FADE-OUT SHAPE
Lucian LUPŞA-TĂTARU
lucian.lupsa@unitbv.roDepartment of Electrical Engineering and Applied Physics, Faculty of Electrical Engineering and Computer Science, “Transilvania” University of Braşov, Bd. Eroilor No. 29, Braşov, RO-500036 (Romania)
Abstract
The fade-out sound effect designates a strict decreasing of the volume of an audio signal, starting from the detected initial level down to silence. Audio fade-outs are usually processed in off-line mode that is within audio editors, by employing different transcendental functions to set the time-related evolution of the audio level. However, the proliferation of mobile devices as well as the increasing popularity of web applications, implemented in HTML5/JavaScript, press for computing techniques suitable for real-time processing. In this context, having in view that the computation of the outputs of transcendental functions is very time-consuming, in order to construct the audio fade-out profile, a technique suitable for real-time computing is developed in the present investigation. The suggested technique is validated by means of an implementation in pure JavaScript, put forward with the purpose of immediate testing.
Keywords:
audio fade, fade-out shape, real-time computing, HTML5, JavaScriptReferences
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Authors
Lucian LUPŞA-TĂTARUlucian.lupsa@unitbv.ro
Department of Electrical Engineering and Applied Physics, Faculty of Electrical Engineering and Computer Science, “Transilvania” University of Braşov, Bd. Eroilor No. 29, Braşov, RO-500036 Romania
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