Real-Time Implementation of an Artificial Stereo Audio Extension Method

In this paper, we address the issue of the real-time implementation of an artificial stereo audio extension method that provides stereophonic audio from a mono audio source. First, the floating-point arithmetic programming of the method is performed. Then, the computationally complex parts of the floating-point operations are converted into fixed-point operations to allow them to operate in real time. The performance of a real-time implementation is evaluated by measuring the processing time and root mean square (RMS) value. Consequently, it is shown that partial fixed-point arithmetic programming reduces the processing time by 48.7%, with an RMS value of-90.50 dB, compared to the floating-point arithmetic programming.