FYI, For those with M-audio delta 44/66, I found an interesting article: http://www.sm5bsz.com/linarch/linarch02-03/msg00313.html which I uudecoded and placed here: http://nielsmayer.com/improving_noise_floor_delta_a2d_conv.doc "Improving the noise floor of a Delta44 A/D converter (Sept 3 2002)" Any comments or experience with this mod?? ............................. Regarding the previous thread, the newly won, potential victim of the quasibalanced output mod: "Terratec DMX 6fire 24/96" http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=180514801725 The attempt: silencing the noise out of my nec xr385/yam db50xg ( http://www.megatrade.ru/English/db50faq.html ) which i think is the result of lack of shielding, bad regulated power supply, or crap dynex dx-sc51 that has a waveblaster port, but leaves the db50xg card (about twice the size of the new-tech soundcard) hanging in the middle of your computer, without even the groundplane of original ISA-full-length card to protect it... ...... it's basically switching/ground/digital noise unless someone has a better explanation for sub-50hz noise in a country with 60hz line voltage: http://nielsmayer.com/db60xg-jaaa-L-noise.png shows the noise level at -51db whereas the right channel is the more-reasonable -65db http://nielsmayer.com/db60xg-jaaa-R-noise.png http://nielsmayer.com/db60xg-japa-L-R-noise.png (note the db50xg itself claims "18 bit output D/A's" so the noise, in theory, should be well below -96db) ....... The hope: the new Terratec DMX 6fire 24/96" houses the db50xg in a separate breakout box, and has halfway decent A/D section, and probably slightly less sucky input and output analog components than the equivalent M-audio delta 66 (both cards are supported by Module snd-ice1712), and probably many times better than the cheap dynex dx-sc51 (Module snd-ice1724) currently hosting the synth. https://vsr.informatik.tu-chemnitz.de/twiki/bin/view/Sonstiges/WaveTableSoundCards "Terratec DMX 6fire 24/96 PCI inside the breakout box, Good as of 2005!" http://ftp.terratec.de/Documentation/Linux_and_Mac_OSX_Compatiblity.pdf "the 6fire uses the ICE Envy24, which is supported under Linux by the Alsa project. The gnu application envy24control offers a very good control panel derivative. http://www.soundonsound.com/sos/Apr02/articles/terratecdmx6.asp http://www.hardwareheaven.com/other-tech-news/640-terratec-dmx-6fire-review.html http://www.soundonsound.com/sos/mar05/articles/qa0305_6.htm Niels http://nielsmayer.com _______________________________________________ Linux-audio-user mailing list Linux-audio-user@xxxxxxxxxxxxxxxxxxxx http://lists.linuxaudio.org/listinfo/linux-audio-user
