atcomsystems.ca/forum Forums Telephony Discussion Phone & VoIP Systems NEC Telephones & Systems NEC SL1100 Playing Distorted MoH Music

Hello Yall,
We just uploaded a new audio file to an NEC SL1100. This was one audio file that had 6 paragraphs and background music between paragraphs, but both voice and music were formated as one audio file. The issue is that the voice portion plays crystal clear, but the music portion plays with obvious distrorion. We reformatted the audio file at a lower volume, we changed the music style to soft music with no use. The audio plays great on the MoH unit and on other phone systems we tested with, but not on the NEC SL1100. Again, the voice portion is clear, but the music portion is distorted.

I would really appreciate any tips

Thank you

I haven't come across this sort of thing before. Normally the whole file works or doesn't. Have you tried just making a file with the music only and playing that one back and see what it sounds like??

Not sure if anyone else in the US has had this problem..

Thanks Paul, I have not tried music only, but I will. This has really been very strange. I agree with you, The whole audio should be one way or the other, not 50/50!!

Is the entire file in the proper format?

Yes it is, the music is in the same exact format as the voice portion. The voice is crystal clear, but the music is distorted...as when you crank up the volume through some bad speakers!

Music and speech use different paths of frequency. that said, have you investigated the paths that feed the SL1100?

What kind of pathway is feeding the SL1100 ? Pots, VOIP, etc ?
How are you monitoring the music output of the KSU ?

Have you tried using BGM feature of the system and what were the results there as far as quality of the music ?

Did not ask if format the same. Is it what the the Manf tells you to use???

Sorry, The required audio file format by the MoH device attached to the phone system's MoH port is of the following format:

MP3, 128Kbps, 44.1KHZ, Mono

The voice and music portions of the audio file were steched together as a single audio file in this format.

Sorry for the delay TJ. I am still waiting for the phone system's vendor to reply back with the answers to your questions

OK, I thought you said you uploaded a file to the phone unit, not an external device.