Noise/Interference on recordings

NOVASKI · **Posted:** Tue Nov 18, 2003 4:55 am

I have an AG2000 loop start interface, when I record to a WAV file using the RECORD step, I get a sound spike every 200ms. I've adjusted the number of buffers, and checked the config file. Has anybody else has a similar problem. The spike confuses speech recognition on a variable basis. The info below is my oamsys cfg file for the board #-------------------------------------------------------------- # Originally created from input file gbr\a2lps.cfg. # Detailed board settings for: # Product = AG_2000 #-------------------------------------------------------------- # Uncomment the appropriate Trunk Control Protocol(s) TCPFiles[0] = nocc.tcp # "no trunk control" protocol TCPFiles[1] = lps0.tcp # Loopstart protocol # DSP (.m54) files to link in XLaw = mu-LAW DLMFiles[0] = gtp.leo DLMFiles[1] = voice.leo DLMFiles[2] = svc.leo NetworkInterface.Analog[0..7].ConfigFile = a2eurlsc.slc Clocking.HBus.ClockSource = OSC Clocking.HBus.ClockMode = STANDALONE DSP.C5x.[0..3].Files[0] = adsir.M54 DSP.C5x.[0..3].Files[1] = callp.M54 DSP.C5x.[0..3].Files[2] = dtmfe.M54 DSP.C5x.[0..3].Files[3] = echo_v3.M54 DSP.C5x.[0..3].Files[4] = mf.M54 DSP.C5x.[0..3].Files[5] = ptf.M54 DSP.C5x.[0..3].Files[6] = rvoice_vad.M54 DSP.C5x.[0..3].Files[7] = signal.M54 DSP.C5x.[0..3].Files[8] = tone.M54 DSP.C5x.[0..3].Files[9] = voice.M54 DSP.C5x.[0..3].Files[10] = wave.M54 DynamicRecordBuffers = 10 Buffers[1].Size = 1600 BUffers[1].Num = 96

NOVASKI · **Posted:** Wed Nov 26, 2003 1:58 am

Further information, due to a customer request, I had to revert the machine running the above application to NA2002-1 (so that I could change a Show N Tell application). In the persuit of danger, I tried the above app. and it works with no problem. The only change I had to make to the oamsys files was to drop the DynamicRecordBuffers entry.

NOVASKI · **Posted:** Wed Nov 26, 2003 2:00 am

Sorry forgot to say original config was NA2003-1.

Vern · **Posted:** Thu Nov 27, 2003 1:09 pm

Just following up. Did going back to NMS 2002 fix the problem?

NOVASKI · **Posted:** Fri Nov 28, 2003 1:57 am

Sure did. But I still get Teleflow 2004 aborting with a Memory protection error.

Tim · **Posted:** Tue Dec 02, 2003 1:54 pm

Likely, the cause of the memory protection errors is TeleFlow build 1031. Recommend you download again. The new build, #1121, fixes certain stability issues. On the sound spike issue, it seems like there is a bug with NA2003-1 and the Euro version of the AG2000 card (I assume that is what you have). We have not had any such problems with NA2003-1 and AG2000 in North America. I'd love to learn more, if anyone else has encountered this problem.