LF: Re: M0BMU WOLF Beacon

[Alberto di Bene <dibene@usa.net>]

Johan H. Bodin wrote:

> This sampling rate is re-sampled to a "standard" rate by
> Windows when listening through the soundcard, and by the VAC software
> (Virtual Audio Cable) when routing the signal to other programs such as
> Wolf. Unfortunately, the VAC software seems to use a quite sloppy
> algorithm for resampling, probably to reduce the CPU load. At some
> output sampling rates, there are distorsion products that look like some
> kind of "in-band aliasing" and these are not more than 40dB down or so
> :-( Maybe this percent of THD goes unnoticed by "normal" VAC users who
> listen to mainsream music (which is usually 100% distorsion anyway ;-) )
 Yes, I can confirm that VAC has a very bad resampler. You can hear the artifacts easily, even on voice recordings. A 
good suggestion for Nico would be to implement the resampler inside the Perseus software...
73  Alberto  I2PHD