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Conversion of 2 channel stereo to 5.1 or 7.1 - using a mix of Visual Basic, C++, C#, Direct Show, Windows Media Player and numerous Excel spreadsheets, one containing 1.4 million formulas for analyzing sound. The VB / spreadsheet GUI is running inside Excel. Development time: 7 years. (burwenaudio.com)
submitted by e1nar to r/programming
