- Feb 23, 2016
At one time there was an old Arny Krueger file about where he recorded jangling keys at high sample rates and offered the 44.1 khz version from a down sample. I found I could pick out the low rez version using Foobar ABX software. I don't know what software he used. So I made my own jangling key recordings and downsampled and found I could not hear it. I was using the Sox downsampler which is a very good one. I took Arny's hires sample and downsampled it with Sox and I now could not hear the difference. I seem to recall Amir tried my downsampling, and found it much harder to discern than Arny's downsampled version. Though I believe he still could detect it.Hard to believe.
BTW, why jangling keys? Because about 3 metal keys on a keyring jangled are actually pretty loud in the 25-35 khz range. Not so loud to us, but most of the energy is ultrasonic. What sounds like a tinkling to us is pretty loud to our dog or cat or mice.