On Sun, Dec 30, 2001 at 01:26:28AM +0000, Stephen Davies wrote: > > Hi, Hi Stephen, > But there is a unpleasant interaction between that code and the btaudio > drivers' fixed 8k fragment size. Indeed. > The big fragments mean a lot of jitter > in the sampled number of bytes written. Resulting in NVrec making rather > large adjustments to the resampling. Uh-huh! > The result is 4 or 5% "wow" added to > the audio. (remember old tape recorders with a flat pinch wheel?) Good example of what it actually sounds like. > This patch changes NVrec to change the resampling rate much more > slowly - so the jitter is proportionatly smaller. This eliminates the > wow. It sure does! Works slicker than snot on a door-knob! Now I can stop fussing around with v4l2 volume controls, mixer settings and all the like and just record with the btaudio device. Yay!! > I'd appreciate confirmation from any brave person who'll give this a try - > I believe Justin's away till the 20th. Works great on my v4l2/bttv2 0.7.x. Thanx! b. -- Brian J. Murrell
