Congrats Bill! Now you won't get any sleep at all. 
George. FLAC is similar to ZIP, just optimized for audio, so you get a little tighter pack. Completely lossless, bit perfect. I converted 1 of your files to FLAC and it was about 1/2 the wave size. ZIP was slightly over 1/2. If you zip each file, then all of them would fit in your dropbox. Do them individually, or maybe 2 or 3 in a group. That keeps the download file size reasonable. No need to put them all in the same zip archive, that would be a BIG file.
In Windows you can normally just right click a file (or multiple files) to send to ZIP. Easy on the Mac, too. No need to worry about loss, both ZIP and FLAC are lossless.
George. FLAC is similar to ZIP, just optimized for audio, so you get a little tighter pack. Completely lossless, bit perfect. I converted 1 of your files to FLAC and it was about 1/2 the wave size. ZIP was slightly over 1/2. If you zip each file, then all of them would fit in your dropbox. Do them individually, or maybe 2 or 3 in a group. That keeps the download file size reasonable. No need to put them all in the same zip archive, that would be a BIG file.
In Windows you can normally just right click a file (or multiple files) to send to ZIP. Easy on the Mac, too. No need to worry about loss, both ZIP and FLAC are lossless.
Thank you for doing this George: it's priceless and so well done. I've successfully downloaded the first 90 files, they look good and couldn't resist a sneak peak......! looking forward to the next set and details of the test regime in due course.
LD
I've looked at the 2nd and the 90th play and done some analysis. I've looked only at the 1K tone and the 5K tone. The recordings were surprisingly low in volume, they had to be amplified by 36dB to get good levels. That done, I ran a spectrum in them at 32K points, Blackman-Harris window.
Below are the 5kHz graphs. You'll see that the fundamental of 5kHz is the same from the 2nd play to the 90th, but the 90th does not look as clean. I've also isolated the harmonics for you to look at.
Will do the 1K tone next.
Below are the 5kHz graphs. You'll see that the fundamental of 5kHz is the same from the 2nd play to the 90th, but the 90th does not look as clean. I've also isolated the harmonics for you to look at.
Will do the 1K tone next.
Attachments
There are several very strange artifacts. First of all the almost instantaneous drop off in the noise floor (red) after 5k simply has no reasonable physical explanation. What's with the triple peaks???.
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