Post by CoyoteArms on Mar 22, 2016 11:32:54 GMT -5
I have a question about the low-pass filtering effect of the XPS-1 beyond 20 kHz so it might play the role of a pre-digitization filter. Does it actually have a low-pass filter circuit built in, and if so, what are the specs, especially dB/oct? I cannot find anything on the market specifically designed to filter audio signals before digitization at 96 kHz although such gear must be part of any good recording studio.
Details:
I have been tinkering with ideas on how best to digitize vinyl using the XPS-1 as the phono preamp between my turntable and an external sound card (Focusrite USB Scarlett 2i4). My current plan is to digitize at 24-bits/96kHz (the best the Scarlett can do), and capture that on an Alienware gaming laptop with Audacity. The sound card/laptop/software combo is capable of grabbing that signal without gaps or burps. With Audacity (that does 32-bit floating point processing) I will do the standard stuff like DC removal, channel balance, maybe high pass if necessary to remove turntable rumble, and in the end spit out 16-bit/48kHz FLAC files (DVD quality good enough for my ears). The sole reason for digitizing at 96 kHz, is so that the 20-20,000 Hz bandwidth limited signal from the XPS-1 will essentially be filtered at a frequency significantly lower than the Nyquist frequency of 48 kHz and therefore minimize aliasing of the signal. If not, I don't know what to do.
Details:
I have been tinkering with ideas on how best to digitize vinyl using the XPS-1 as the phono preamp between my turntable and an external sound card (Focusrite USB Scarlett 2i4). My current plan is to digitize at 24-bits/96kHz (the best the Scarlett can do), and capture that on an Alienware gaming laptop with Audacity. The sound card/laptop/software combo is capable of grabbing that signal without gaps or burps. With Audacity (that does 32-bit floating point processing) I will do the standard stuff like DC removal, channel balance, maybe high pass if necessary to remove turntable rumble, and in the end spit out 16-bit/48kHz FLAC files (DVD quality good enough for my ears). The sole reason for digitizing at 96 kHz, is so that the 20-20,000 Hz bandwidth limited signal from the XPS-1 will essentially be filtered at a frequency significantly lower than the Nyquist frequency of 48 kHz and therefore minimize aliasing of the signal. If not, I don't know what to do.
