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    How can I find the current wav encoding

    Scheduled Pinned Locked Moved Solved IT Discussion
    freepbxvoicemail3cxconversionsoxwav
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    • AdamFA
      AdamF
      last edited by

      I've used the built in "file" command before. example:

      file test.wav
      
      Output: test.wav: RIFF (little-endian) data, WAVE audio, Microsoft PCM, 16 bit, mono 8000 Hz
      

      Is that what you're looking for?

      matteo nunziatiM 1 Reply Last reply Reply Quote 0
      • DustinB3403D
        DustinB3403
        last edited by

        I think @JaredBusch is trying to convert them.

        AdamFA 1 Reply Last reply Reply Quote 0
        • RojoLocoR
          RojoLoco
          last edited by RojoLoco

          Use Audacity. It will tell you bit depth and resolution, and will convert to whatever format you like. Phone system stuff is usually u-Law encoded wav files, which pretty much don't play anywhere else but the phone system.

          https://www.audacityteam.org/

          1 Reply Last reply Reply Quote 2
          • AdamFA
            AdamF @DustinB3403
            last edited by

            @DustinB3403

            Agreed. He just asked for how to see what the current encoding was though. If conversion does need done, then I agree with @RojoLoco . I use Audacity all the time for conversions. Works great!

            1 Reply Last reply Reply Quote 0
            • 1
              1337
              last edited by 1337

              What version of 3CX was it made on?

              Actually, it probably doesn't matter. Normally in 3CX it's standard PCM, 8 kHz, 16 bit, Mono.

              Just to clarify, PCM is just the audio data uncompressed straight up. Like what you have on a CD. Don't need codecs of any kind for this.

              1 Reply Last reply Reply Quote 0
              • matteo nunziatiM
                matteo nunziati @JaredBusch
                last edited by

                @JaredBusch said in How can I find the current wav encoding:

                I have a bunch of voicemails from a 3CX system that I would like to move to FreePBX.

                The moving and naming is simple. But they will not play, likely because of some Windows codec used or something.

                The sox tool is built into FreePBX but I think I am needing to specify some information in order to get the files output into a form I can use.

                As a basic test the 'file' command can help listing main wav info. Just 'file *.wav'.

                1 Reply Last reply Reply Quote 0
                • matteo nunziatiM
                  matteo nunziati @AdamF
                  last edited by

                  @fuznutz04 said in How can I find the current wav encoding:

                  I've used the built in "file" command before. example:

                  file test.wav
                  
                  Output: test.wav: RIFF (little-endian) data, WAVE audio, Microsoft PCM, 16 bit, mono 8000 Hz
                  

                  Is that what you're looking for?

                  Damn. Today I've issues with internet... None had answered when I've started posting...

                  1 Reply Last reply Reply Quote 0
                  • JaredBuschJ
                    JaredBusch
                    last edited by JaredBusch

                    So file says this:

                    file vmail_3038710928_101_20181113170803.wav 
                    vmail_3038710928_101_20181113170803.wav: RIFF (little-endian) data, WAVE audio, IMA ADPCM, mono 8000 Hz
                    

                    Well a file recorded by Asterisk shows this.

                    file msg0000.wav 
                    msg0000.wav: RIFF (little-endian) data, WAVE audio, Microsoft PCM, 16 bit, mono 8000 Hz
                    
                    1 Reply Last reply Reply Quote 0
                    • JaredBuschJ
                      JaredBusch
                      last edited by

                      So the only difference is the IMA ADPCM from 3CX to Microsfot PCM from Asterisk/FreePBX.

                      RojoLocoR 1 Reply Last reply Reply Quote 0
                      • RojoLocoR
                        RojoLoco @JaredBusch
                        last edited by

                        @JaredBusch said in How can I find the current wav encoding:

                        So the only difference is the IMA ADPCM from 3CX to Microsfot PCM from Asterisk/FreePBX.

                        That's exactly what prevents them from playing in a regular media player. MS PCM is the standard wave file.

                        JaredBuschJ 1 Reply Last reply Reply Quote 0
                        • JaredBuschJ
                          JaredBusch @RojoLoco
                          last edited by

                          @RojoLoco said in How can I find the current wav encoding:

                          @JaredBusch said in How can I find the current wav encoding:

                          So the only difference is the IMA ADPCM from 3CX to Microsfot PCM from Asterisk/FreePBX.

                          That's exactly what prevents them from playing in a regular media player. MS PCM is the standard wave file.

                          That's the 3CX spitting out the IMA version.

                          Here are more details form soxi

                          a9d06800-0f88-47b2-ad8e-31d57721530c-image.png

                          So now to figure out how to convert?

                          RojoLocoR 1 Reply Last reply Reply Quote 0
                          • RojoLocoR
                            RojoLoco @JaredBusch
                            last edited by RojoLoco

                            @JaredBusch that is some wacky shit... 32.5kHz is an odd one. You should be able to open these in Audacity and choose either export or save as and choose a good format. There might be some speeding up or slowing down if you don't do the right steps to change the sample rate (see below):

                            Load your audio file in Audacity. Note the areas where you can see sampling rate information. The rate of your file is located in the grey area to the left of the waveform. The project sampling rate is located in the lower left-hand corner (Project Rate (Hz)). To change the rate of your file, you need to select the Tracks menu and scroll down to Resample… (If you were to change the rate by altering the project sampling rate below, it would merely change the rate Audacity plays the file, not the file’s actual sample rate).

                            6317dcb264819481d4323878a4453dac.jpg

                            http://www.dynamicsoflanguage.edu.au/research/data-archives/guides/resampling-audio-using-audacity/

                            JaredBuschJ 2 Replies Last reply Reply Quote 1
                            • JaredBuschJ
                              JaredBusch @RojoLoco
                              last edited by

                              @RojoLoco said in How can I find the current wav encoding:

                              @JaredBusch that is some wacky shit... 32.5kHz is an odd one. You should be able to open these in Audacity and choose either export or save as and choose a good format. There might be some speeding up or slowing down if you don't do the right steps to change the sample rate (can't remember the whole process in Audacity). If you can email me a small sample, I can provide better instructions.

                              Got it...

                              sox vmail_3038710928_101_20181113170803.wav --encoding ima-adpcm -c 1 -e signed-integer msg0000.wav
                              

                              spits out

                              [jbusch@pbx INBOX]$ soxi msg0000.wav 
                              
                              Input File     : 'msg0000.wav'
                              Channels       : 1
                              Sample Rate    : 8000
                              Precision      : 16-bit
                              Duration       : 00:00:39.20 = 313605 samples ~ 2940.05 CDDA sectors
                              File Size      : 627k
                              Bit Rate       : 128k
                              Sample Encoding: 16-bit Signed Integer PCM
                              

                              And plays correctly.

                              1 Reply Last reply Reply Quote 1
                              • JaredBuschJ
                                JaredBusch @RojoLoco
                                last edited by

                                @RojoLoco I was trying to stay in the built in functions, but was running out of ideas. Had this not worked, I would probably have had to go the Audacity route.

                                1 Reply Last reply Reply Quote 1
                                • 1
                                  1337
                                  last edited by

                                  @JaredBusch

                                  Good thing you brought this up. I couldn't believe that your recording where ADPCM because in our 3CX we just have PCM recordings.

                                  It turns out that the ADPCM codec for recordings is a completely new feature in 3CX, which arrived in the latest version 15.5

                                  I had to dig around before I could find that setting anywhere. But it's under the recording quota.

                                  IMHO you should have a lot of recordings to enable it in the first place. In just 10GB you have room for 167 hours of non-compressed recordings. But maybe some users have it set up to recording everything on every call and a lot of extensions and small cloud hosted VMs.

                                  3cx_compress_recordings.png

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