Hi all, I'm new to the list, but am interested in helping out with codec2 and this seemed like the perfect thing to start with.
I started writing a program to cause bit errors at specified locations in the frames in order to judge their importance. Got it working just a bit ago and decided I would share it here. The C code can be found at: http://www.kg4sgp.com/code/errbit.c Its not the cleanest/prettiest code, but it works :) . It can be piped and I have used it in-line with some of the examples. If everyone is interested I would be happy to take some of the sample audio files and encode them with bit errors at different positions across the different bit rates. I could write that up and post it to my site, or where ever you guys would like. Already it can be seen that certain bits are very important! Looking forward to your replies! KG4SGP - Jim On 10/24/2012 06:17 PM, David Rowe wrote: > Hello, > >>> Given what Jean-Marc wrote about the first VQ index, it probably rates >>> higher than energy. >> If David and/or Steve can confirm this; it makes sence to incorperate >> this in the search for a good interleaver. > It's best to test the relative sensitivity of the different codec > parameters. So set up the FEC/interleaving so that we can evaluate > different schemes, apply say 1-5% random errors and listen to the > results for a few test sentences. > > The index assignment Jean-Marc suggested may provide as much improvement > as FEC. > > Cheers, > > David > > > > ------------------------------------------------------------------------------ > Everyone hates slow websites. So do we. > Make your web apps faster with AppDynamics > Download AppDynamics Lite for free today: > http://p.sf.net/sfu/appdyn_sfd2d_oct > _______________________________________________ > Freetel-codec2 mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/freetel-codec2 ------------------------------------------------------------------------------ Everyone hates slow websites. So do we. Make your web apps faster with AppDynamics Download AppDynamics Lite for free today: http://p.sf.net/sfu/appdyn_sfd2d_oct _______________________________________________ Freetel-codec2 mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/freetel-codec2
