Shrinikg audio files for DX use

From a message of me posted on WOR :

Hello 

For anyone interested to post and email audio files such as WOR emailit , radio stations and other uses  , it is better to upload the files into a virtual folder as Dropbox and Box or audio sites as Soundcloud and drop here only the link 

Sites alternative to dropbox

1. Sync.Com
2. PCLOUD
3. Google Drive
4. Microsoft One Drive
5. TRESORIT
6. BOX
7. SpiderOak
8. iDrive

A few similar to soundcloud :

• MixCloud. (www.mixcloud.com) ...
• MixCrate. (www.mixcrate.com) ...
• BandCamp. (www.bandcamp.com) ...
• YouTube. (www.youtube.com) ...
• Pandora. (www.pandora.com) ...
• iTunes. (www.apple.com/itunes) ...
• Apple Music. (www.apple.com/music )

Alternative : Shrinking audio files via email

Another alternative way is to use an audio compression program as bonkenc. and compress them into wma or  mp4 at 24 kbit that can shrink the size into the 1/6th of the original 128kbit mp3 file keeping the same audio quality on HF bands. Also ideal for sending 10 minutes of audio via email. I also recommend you to first shrink the files and then store them also to any virtual folder 

 

Recommended bit rates

For emailing AM audio

-Suggested compression bitrates : between 20 and 36 

-Suggested formats: WMA 9.2 or  MP4 or AAC (ths is the same format) 

To my ears  they sound the same with  the original audio This is ideal for sending 10 minutes of audio via email for a size of only 3MB

 

For emailing FM audio 

-suggested compression formats and bitrates : 

WMA between 36 to 64 kbit

MP4 : below 44 kbit

Audio Compression programs :

• Bonkenc is still free.I used it 10 years ago  . It is better to use an older  and simpler version  https://www.freac.org/  The newer version xx.15 is even faster .WMA standardizes conversion into 8/8 in the drop-down menu even if you change it manually.   Auto mode  works perfectly. Have not tested any other mode so far.There is also a multi file  join feature. 
  
• I use the excellent multi-thread Xrecode   Supports more than 30 audio formats .8 files can be converted in parallel in a 4 core PC. Requires 10 Eu registration but its worth the money.There are many other features beyond my interest as meta info  multiple converting tasks etc https://xrecode.com/
  
• Fileconverter  https://file-converter.org/ with lots of formats 
• 
  

Online audio conversion sites

•  Xconvert https://www.xconvert.com/audio-compressor
• Audio Compressor https://www.media.io/audio-compressor.html
  

I workk with file conversions for more 25 years and know that very well . It is better  to listen to the experts as me!