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Brent23278624l11i
Participant
February 22, 2022
Question

U-law file

  • February 22, 2022
  • 2 replies
  • 265 views

I've created a U-law file for my employer's on-hold message system and it sounds perfect on my end.  When uploaded to the system and played from my employer's computer its has a terrible background static.  All the parameters are set to where the system wants them (employer confirmed with support), 8000Hz, 8 bit, mono, ulaw. 

We were trying to load a tradition file with no luck, as soon as we converted to the proper settings...boom...it uploaded great but had this static.  Perfect on my end.....but end product....no bueno!

 

Any ideas or thoughts would be greatly appreciated.

 

Brent 

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2 replies

timothye17520758
timothye17520758
Participant
February 13, 2023

I am having the same issue with the newest version. I had to install version 22.6. That version actually has the wav extension available in libsndfile new version only lets you save as an nist file. When using 22.6 and saving files as u-law 8 bit not getting any static. 

SteveG_AudioMasters_
Community Expert
SteveG_AudioMasters_Community Expert
Community Expert
February 22, 2022

This is normal for 8-bit audio - it can't have a SNR of more than 6.02 * 8 = about 48dB, which is why you can hear all that noise. That's determined by the Laws of Physics - nothing to do with Adobe. There are some clues as to what you might want to try in this thread. 

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