[soft_radio] Re: 96KHz Sampling Soundcards with true 40KHz AF Bandwidth?

[Alberto, I2PHD]

Rob,   another 96/24 (96 kHz, 24 bits) card that I have used is the Terratec Aureon Sky. It comes with (flakey) ASIO drivers, but SDRadio does not use ASIO, just WMME. It is not as good as the Delta 44, but it works and it is much less expensive. If memory serves, I bought it a couple of years ago for abt. 36 Euro. I haven't measured the dynamic range, but I recall having seen it reviewed somewhere on Internet. Measured performance was average, but decent, also given the price. Here following is a capture of the spectrum display of SDRadio when told to use the Aureon Sky card, with the line input of the card left unconnected, sampling at 96 kHz. Compare that with the same capture, but this time using the nVidia nForce AC97 chipset on the mainboard You can see that, even if the nVidia chipset is given for 96 kHz sampling, there is a definite rolloff at +-24 kHz, meaning that the anti-alias filter cuts at that frequency. Also the 1/f noise at zero Hz is much higher (abt. 20 dB higher). Also the base noise in the +-24 kHz passband is abt. 10 dB worse than that of the Aureon Sky. 73  Alberto  I2PHD g7elk wrote: I understand that the M-Audio Delta-44 can sample at 96KHz and has a flat analogue input bandwidth to 40KHz.  It also claims a very high dynamic range (99dB?)with at least some chance of this being genuine. Unfortunately, however, the Delta-44 is rather expensive.  Are there any lower cost 96KHz cards which are known to work with SD-radio and which offer a genuine 40KHz AF input bandwidth?  Do any of them have dynamic range comparable to the Delta-44?   Thanks a lot,                Rob . Yahoo! Groups Links To visit your group on the web, go to: http://groups.yahoo.com/group/soft_radio/   To unsubscribe from this group, send an email to: [EMAIL PROTECTED]   Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.