[linrad] Re: PCM2900 sound chip in Linrad

2007-07-04 Thread Leif Asbrink
Hi David, > The PCM2900 has a design defect so that one channel is a clock > tick later on the usb line to the computer. > Sorry I didn't make it clear. I have played with small corrections in > amplitude and phase. >Actually in Winrad, I did the 1 clock shift and the fine adjustments

[linrad] Re: PCM2900 sound chip in Linrad

2007-07-04 Thread Cynthia Lyons
Leif, The PCM2900 has a design defect so that one channel is a clock tick later on the usb line to the computer. Sorry I didn't make it clear. I have played with small corrections in amplitude and phase. Actually in Winrad, I did the 1 clock shift and the fine adjustments, and never got

[linrad] Re: PCM2900 sound chip in Linrad

2007-07-04 Thread Leif Asbrink
Hi David, > I have not yet found how to set up Linrad to compensate for one channel > of a sound card having a delay. The PCM2900 chip seems to have this problem. A delay difference between I and Q will cause a phase error that grows linearly with frequency. In Linrad there is a calibration pro