> Hello everybody ! > > I have carried out a number of test installations of Asterisk > on different PC platforms. > > My conclusion based on experience only is that Astlinux gives > a quality of sound that is allways superior to Asterisk > installed on a more complex Linux distros. > > I have tried a number of Asterisk installations on Linux > distros like SME server and Clarkconnect to see if it not > could be practical and usable to run Asterisk just as an > background process on a server, doing mainly something else. > Asterisk installations has been done based on different > versons of Asterisk sourcecode and some precomiled rpms. > > My experience is the same all the time - If Asterisk is > installed on a general server with a lot of processes running > this allways lead to a reduced analog sound quality. > > The way that I think the sound quality is reduced is that > this more complex Linux distros tends to give Asterisk a some > sort of "semi duplex caracter" - If the two persons are > talking at the same time it tends to give some sort of > "ultrashort pauses" that makes the analogue sound to "float > not so nice and smoot as it should". The sound easyaly and > usually sound like "poor digital sound quality". > > Astlinux allways gives a "smooth and nice running analog > sound" without any hearable degradation of the analogue signal. > > I have tested different installations on the same hardware > and with the same identical set of configuration files, and I > think that the difference is there all the time. > > One other thing that I have noticed is that the load on the > processor is smaller when a telephone call is running via > Astlinux compared with asterisk on a mor complex Linux > distro. (Difficult to measure presicely but it looks like a > difference something like 10:1 or 5:1, 0.9 % processor load > for a call on SME server (a bit more than 100 processes > running), 0.1 % processor load on Astlinux on same hardware > and same configuration files.) > > I have lately been testing a bit on one AMD XP 1500 / 512MB > pc with a standard Asterisk sourcecode installation on > Clarkconnect and Astlinux on a HP Compaq T5000 thin client. > It looks like that the Astlinux on the small thinklient > outperformes the PC installation completely. (Its Astlinux > version 3.0 because the thin client has only a 32 MB onboard memory.) > > I find these observations allmost hard to believe. It is > digital sound processing, and it should not behave like this, > but it does (??) > > I am courios to know - is this observations only my > observations or my "believe" or is these observations that > other Astlinuxusers also have done ? > > If it should be like this, how could it then work like this, > how could digital sound processed on one platform sound > different from digital sound processed on another platform, > when Asterisk configuration files and hardware is identical the same. > > Still I ask myself - can this really be true ? > > > Best reg Arne
Could it have something to do with Asterisk native sounds? I think Astlinux is the only distro that uses them. You will notice better sound quality on IVR and various voice prompts. Since the native sounds do not require decoding they use less resources as well which helps with smoother sound. _______________________________________________ Astlinux-users mailing list [email protected] http://lists.kriscompanies.com/mailman/listinfo/astlinux-users Donations to support AstLinux are graciously accepted via PayPal to [EMAIL PROTECTED]
