Moving sources in OpenAL

Question

linux

Hello Khabrovchane, I have a question for developers who have used or are using OpenAL. Recently I started working with this technology, something has already happened, but I wanted to try the main highlight of OpenAL. This is the volume of the sound. Since the sound playback is asynchronous, I decided to play and then move the source in a loop. However, when playing, I did not feel any changes. Then I decided to use Google and found this example and this one and still did not feel the difference.

I use: Linux 3.0, Ubuntu 11.10, PulseAudio, GCC 4.6, Code::Blocks 10.5, freealut 3.0

Question: What should be added to the code so that it still feels large, or is it about drivers and OS?

Thanks in advance!

PS Answers from programmers of other languages ​​(Java, C, C#, python, etc) are also interesting.