Wow and Forum

I've recently given in and have tried joining a 'web forum' on audio (pink
fish). This seems OK, and the people are friendly, but I still find usenet
easier to use. But alas, most people seem to have migrated away from
usenet...

One thing I've been doing since is that a thread prompted me to start
writing a 'wow and flutter' measurement program. Rough as yet, but this
seems to work OK to the AES specs for such measurements. It also can give
some natty graphics. e.g.

http://jcgl.orpheusweb.co.uk/temp/polar.png

Which shows the variations plotted to rotate once per rotation of the
turntable. The program also shows the specta of variations, variations with
time, and a histogram of the speed variations along with a 'two sigma'
measurement of the amount, weighted as per the AES recommendation.

Hope to finish this off and release versions with source code in my usual
way. Then plan to experiment to see if I can produce a 'fozgometer' type
analysis, although I'm not yet convinced the idea that this helps perfect
cartridge alignment makes sense. :-)

BTW last week someone bought an Armstrong 730/732 combination on fleabay
for 1,136 quid! I'm hoping they will contact me. But I can't give them
their money back. 8-]

Cheers,

Jim

--
Please use the address on the audiomisc page if you wish to email me.
Electronics http://www.st-and.ac.uk/~www_pa/Scot...o/electron.htm
Armstrong Audio http://www.audiomisc.co.uk/Armstrong/armstrong.html
Audio Misc http://www.audiomisc.co.uk/index.html