Hi Walter, I have a cheap soundcard which has this problem. One channel is delayed approximately 15us with respect to the other one, regardless of sampling rate... At 10kHz, 15us corresponds to 54 degrees phase shift - a disaster in an SDR! Maybe the cheap codec chip contains only one A/D converter that is multiplexed between the two channels?
Both SDRadio and Winrad have an adjustable phase correction and I think they can compensate for a fixed time error by using a "fractional sample delay" routine (is this correct Alberto?). In SDRadio: Options/Sound Card Channel Skew Calibration In Winrad: ShowOptions/Channel Skew Calibration 73 Johan SM6LKM Walter wrote: > Still the question is: now what? Are there any sdr programs around > where I can offset one channel by one sample? Would this solve the > problem? Or am I completely off track?
