search

bastibl / gr-rds

FM RDS/TMC Transceiver
http://en.wikipedia.org/wiki/Radio_Data_System
GNU General Public License v3.0
219 stars 73 forks source link

Various improvements to the sample GRC flowgraph #1

Closed argilo closed 10 years ago

argilo commented 10 years ago

Hi Bastian,

As we discussed by email, I made various improvements to the sample GRC flowgraph in gr-rds. I wasn't able to track down the source of the RDS errors I'm seeing on some stations, so this pull request doesn't include any fixes for that. I'll send another pull request if I come up with something.

There may still be more optimizations that can be made to CPU utilization by increasing the transition width of excessively sharp filters, but I haven't looked at that yet.

Another thing that might be worth looking into is ensuring that the L+R and L-R signals stay synchronized. Right now I suspect there is a delay between them because there are more filters in the L-R signal path. Perhaps filter delay blocks could be used to fix this.

bastibl commented 10 years ago

Hi Clayton,

thank you for these patches! They increase performance considerably. Here are also some stations that just don't work, maybe I have some time to look at that next week.

Bastian