[cisco-voip] MOH File Distortion

[Ryan Ratliff]

This is the process we usually send to customers.

1. Convert the original WAV file using the MOH Audio Translator
2. Start CoolEdit and open the original WAV file
3. Edit --> Convert Sample Type
4. Set Sample Rate to 8000 and Resolution to 16-bit
5. Click OK
6. Transform --> Amplitude --> Amplify
7. Set Amplification to 40% (this can be adjusted but the normal  
recording is too high in volume for MOH)
8. Click OK. You can play and UNDO (edit) until you are satisfied  
with the sound
9. File --> Save As
10. Change filename extension to ".ULAW.WAV"
11. Select "Save As Type:" to "A/Mu-Law Wave (*.wav)"
12. Click on Options button and select "MU-Law 8-bit" & click OK
13. Click on Save and answer Yes to overwrite if asked
14. File --> Save As
15. Change filename extension to ".ALAW.WAV"
16. Click on Options button and select "A-Law 8-bit"
17. Click on save and answer Yes to overwrite if asked
18. File --> Close
19. File --> Open (open the original WAV file)
20. Edit --> Convert Sample Type
21. Set Sample Rate to 16000 and Resolution to 16-bit
22. Click OK
23. Transform --> Amplitude --> Amplify
24. Set Amplification to 40%
25. Click on OK
26. File --> Save As
27. Change filename extension to ".WB.WAV"
28. Make sure "Save as Type:" is set to "Windows PCM (*.wav)"
29. Click on OK
30. Exit
31. Put the ".ALAW.WAV", ".ULAW.WAV" and ".WB.WAV" files in C: 
\Program Files\Cisco\TFTPPath\MOHdirectory to replace those created  
by the MOH Audio Translator Service
32. When done, there should be 6 files in the TFTPPath\MOH directory  
that have the same base name asthe original WAV file:
a. Original.WAV
b. Original.xml
c. Original.ALAW.WAV
d. Original.g729
e. Original.ULAW.WAV
f. Original.WB.WAV

-Ryan

On Jan 12, 2009, at 3:44 PM, Lauren Bailey wrote:

Hi All… I’m getting desperate. I’m trying to replace our MOH files  
that I made last year that sound just great but everyone is SICK of  
them. I’ve downloaded as well as ripped several files, converted them  
to wma 8000 mhz, 32mbit and every single one doesn’t even begin to  
sound like music on our system (ccm 5.0).  Distorted, buzzing,  
hissing, etc. Does anyone know how to make a good clear conversion?  
Also, I’ve used no less that 3 different software programs for  
conversion – paid for AND shareware. Something is wrong in my process…

Thanks so much!

Lauren, AT (Accidental Tech)





Lauren Bailey

Willamalane Park and Recreation District

Communications Specialist

541/736-4046



"To begin living like you've never lived before, begin living like  
you've never lived before!"

                                                                         
                                                   Mike Dooley

P Please consider the environment before printing this e-mail.





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