I've a Lenovo Y550 laptop with dual boot Ubuntu 12.04 and Windows &. I've installed Realtek High Definition Audio Codecs in windows installation. When I hear audio in Ubuntu it has less effect than Windows. In Ubuntu I am using the default installation settings. Is there anything I can do to make it better?
go to http://www.realtek.com/downloads/ and download the driver for UNIX/Linux
Then go to the downloaded location and extract the file.
Inside that folder, there's a file named INSTALL, double click it and when prompted click run in terminal.
go to http://126.96.36.199/downloads/ and select High Definition Audio Codecs (Software) you find the driver for Linux which is about to 4.5 MB in size. you can find complete installation guide on in the compressed folder.