The Mellotron Group

Thanks to you and Gino! I'm getting some more clues.  This truly is a vexing problem as I have NEVER had this problem with any of my clients and I believe my current client has the bare minimum system to get the job done. I've delivered 8bit/8khz .wav u-law before with no probs. I'm trying to get ahold of somebody with the system provider to get more clues.  Just what i wanted to become, an expert on music -on-hold conversion procedures :>)

Thanks again

fritz

 

 

 

-----Original Message-----
From: Bruce Daily <pocotron@yahoo.com>
To: newmellotrongroup <newmellotrongroup@yahoogroups.com>
Sent: Thu, Jan 10, 2013 5:24 pm
Subject: Re: [newmellotrongroup] off topic help


  
    
                  

Hi Fritz-
  Gino may be thinking what I was thinking.  EQ it first, with a bandpass between 300 Hz and 4 KHz (close to landline response).  This keeps outside frequencies from interfering in the A-D conversion.  THEN convert it to digital.
 
   Hope this helps.
 
  -Bruce D.
 


  
 
 
  
  From: gino wong <wonggster@gmail.com>
 To: newmellotrongroup@yahoogroups.com 
 Sent: Thursday, January 10, 2013 1:04 PM
 Subject: Re: [newmellotrongroup] off topic help
  
 
     
                  
This stuff can be hard.  If it were analog I would go 250 nanowebers to forstall any chance of distortion.  
I haven’t been in this specific situation but.  I have found that you end up questioning the specs in this range. 
I would make sure you are getting true 8 bit and not 4 or 2. or just cause it says 8 bit are entitled to use it from your point of entry or does it burned onto rooms or pushed into dialogic chip banks.


You may end up using a KSU as a Preamp and monitor 


Did you know that EQ”s were invented for phone systems ?


best


gino
On Thu, Jan 10, 2013 at 2:28 PM,  <fdoddy@aol.com> wrote:
 
  
    
                  
sorry for the typo..it's u-law...


fritz


 

 

 

-----Original Message-----
From: fdoddy <fdoddy@aol.com>
To: newmellotrongroup <newmellotrongroup@yahoogroups.com>
Sent: Thu, Jan 10, 2013 2:16 pm
Subject: [newmellotrongroup] off topic help


 
  
    
                  
Folks,

I am trying to format a file for a client for their music on hold.  Their conversion spec is 8bit/8khz mono .wav (u-plaw).

I have been unsuccessful in having this sound reasonable after it goes into their AVIA phone system due to the GSM compression.  I can get the converted file to sound reasonable, but once it's out of my hands and actually in the system it sounds like shit.  I realize there is a good deal of degradation due to the GSM compression, but am at a loss what to do to improve the quality.  Anyone have any experience with this and have any tips?

Thanks,

fritz

    
             
  
 

    
             

  




-- 


Gino Wong Birgelo
BSComm, BSEE,
ReRED Recording, Analog Sound Design
Audio Mastering, Recording & Restoration, Logistics


Ginowong@gmail.com