Jim Audiomisc
pfm Member
Out of curiosity, over the last week I've written a program than can take a recording from a test LP and use it to generate Wow and Flutter measurements to the AES spec for weighting, etc. It also shows the average test tone frequency with an accuracy of about a few parts-per-million to check the basic speed (assuming the test LP is correct!) Plan to make the program and source code public. But am wondering if people will find this of interest/use. It also plots the speed/time.
FWIW although a 3k test tone is usual for the standard tests, it work with any decent tone over a range from about 1k up to about 10k. So most test LPs should have something suitable.
I'm also thinking of having a bash at something similar to check THD, crosstalk, etc, as an aid for checking cartridges and their alignment. Again, is this likely to be of interest as free open software? As above, I'm mainly doing it out of curiosity and to experiment with.
Jim
FWIW although a 3k test tone is usual for the standard tests, it work with any decent tone over a range from about 1k up to about 10k. So most test LPs should have something suitable.
I'm also thinking of having a bash at something similar to check THD, crosstalk, etc, as an aid for checking cartridges and their alignment. Again, is this likely to be of interest as free open software? As above, I'm mainly doing it out of curiosity and to experiment with.
Jim