On Wed, Jun 16, 2010 at 12:06:40AM +1200, Paul M wrote: > On 15/06/2010, at 11:18 PM, Paul M wrote: > > >On 15/06/2010, at 8:25 PM, Alexandre Ratchov wrote: > > > >>On Mon, Jun 14, 2010 at 08:20:57AM -0600, Ted Roby wrote: > >>> > >>>Sound cards just get too much noise off the motherboard. > >> > >>well, it depends on the sound card; properly engineered > >>cards don't get noise, including pci ones. > > > >It seems the best I can get with the built-in sound on this computer > >is about 36dB S/N. If the various input gain stages are not set quite > > Sorry, that's a typo - should be -46 dB >
that's not very good; 8-bit samples correspond to 48dB; I mean with 48dB S/N, only 8 higher bits are significant. Such a low S/N ratio makes me wonder if your cables, power supply or whatever are ok. BTW, how did you measure the S/N ratio? -- Alexandre
