[asterisk-app-dev] Clicks in audio

[Naftoli Gugenheim]

FWIW I tried with Asterisk 14.3.0, same issue.

Any idea?

On Sun, Oct 15, 2017 at 9:31 AM Naftoli Gugenheim <naftoligug at gmail.com>
wrote:

> Hi, can anyone look into this, or at least give me some pointers?
>
> On Mon, Oct 9, 2017 at 12:17 PM Naftoli Gugenheim <naftoligug at gmail.com>
> wrote:
>
>> Hi, I have an IVR that uses FastAGI, currently running on asterisk 13
>> (via the cleardevice/docker-cert-asterisk13-ubuntu docker image).
>>
>> The problem: In between playing audio files there is an audible click.
>> I'm not sure if somehow the audio files themselves contain clicks and for
>> some reason I don't notice when playing them without asterisk but over the
>> phone they're magnified, if it's a codec issue, if I'm doing something the
>> wrong way, or what. Any help is greatly appreciated!
>>
>> Here is an illustration of what I mean, generated using a call recording
>> app on my phone:
>> https://drive.google.com/open?id=0B2SmgnDyV1aETDZrdnJBTU82RGc
>>
>> Here are the files from the server that it uses:
>> https://drive.google.com/open?id=0B2SmgnDyV1aEWGNJYy13OGZMTUU
>>
>> I'm not sure why I have both .wav and .sln files.
>>
>> Here is some information from the asterisk CLI:
>>
>>
>> ubuntu at chavrusa-main:~$ docker-compose exec asterisk asterisk -r
>> Asterisk certified/13.1-cert4, Copyright (C) 1999 - 2014, Digium, Inc.
>> and others.
>> Created by Mark Spencer <markster at digium.com>
>> Asterisk comes with ABSOLUTELY NO WARRANTY; type 'core show warranty' for
>> details.
>> This is free software, with components licensed under the GNU General
>> Public
>> License version 2 and other licenses; you are welcome to redistribute it
>> under
>> certain conditions. Type 'core show license' for details.
>> =========================================================================
>> Connected to Asterisk certified/13.1-cert4 currently running on
>> 9c5c45693e10 (pid = 17)
>> 9c5c45693e10*CLI> core show version
>> Asterisk certified/13.1-cert4 built by root @ 2dcc79fb8a1e on a x86_64
>> running Linux on 2016-03-03 08:25:13 UTC
>> 9c5c45693e10*CLI> core show file formats
>> Format     Name       Extensions
>> ------     ----       ----------
>> siren7     siren7     siren7
>> g719       g719       g719
>> h264       h264       h264
>> siren14    siren14    siren14
>> h263       h263       h263
>> gsm        gsm        gsm
>> gsm        wav49      WAV|wav49
>> ilbc       iLBC       ilbc
>> slin192    sln192     sln192
>> slin96     sln96      sln96
>> slin48     sln48      sln48
>> slin44     sln44      sln44
>> slin32     sln32      sln32
>> slin24     sln24      sln24
>> slin16     sln16      sln16
>> slin12     sln12      sln12
>> slin       sln        sln|raw
>> slin16     wav16      wav16
>> slin       wav        wav
>> g723       g723sf     g723|g723sf
>> g729       g729       g729
>> g726       g726-16    g726-16
>> g726       g726-24    g726-24
>> g726       g726-32    g726-32
>> g726       g726-40    g726-40
>> g722       g722       g722
>> ulaw       au         au
>> alaw       alaw       alaw|al|alw
>> ulaw       pcm        pcm|ulaw|ul|mu|ulw
>> 29 file formats registered.
>> 9c5c45693e10*CLI> core show codecs audio
>> Disclaimer: this command is for informational purposes only.
>> It does not indicate anything about your configuration.
>>       ID  TYPE     NAME DESCRIPTION
>>
>> -----------------------------------------------------------------------------------
>>        5 audio     g726 (G.726 RFC3551)
>>        3 audio     alaw (G.711 a-law)
>>        1 audio     g723 (G.723.1)
>>       19 audio    speex (SpeeX)
>>       20 audio    speex (SpeeX 16khz)
>>       21 audio    speex (SpeeX 32khz)
>>       23 audio     g722 (G722)
>>        7 audio    adpcm (Dialogic ADPCM)
>>       24 audio   siren7 (ITU G.722.1 (Siren7, licensed from Polycom))
>>       27 audio     g719 (ITU G.719)
>>       18 audio     g729 (G.729A)
>>        8 audio     slin (16 bit Signed Linear PCM)
>>        9 audio     slin (16 bit Signed Linear PCM (12kHz))
>>       10 audio     slin (16 bit Signed Linear PCM (16kHz))
>>       11 audio     slin (16 bit Signed Linear PCM (24kHz))
>>       12 audio     slin (16 bit Signed Linear PCM (32kHz))
>>       13 audio     slin (16 bit Signed Linear PCM (44kHz))
>>       14 audio     slin (16 bit Signed Linear PCM (48kHz))
>>       15 audio     slin (16 bit Signed Linear PCM (96kHz))
>>       16 audio     slin (16 bit Signed Linear PCM (192kHz))
>>        2 audio     ulaw (G.711 u-law)
>>       17 audio    lpc10 (LPC10)
>>       26 audio  testlaw (G.711 test-law)
>>       39 audio     none (<Null> codec)
>>       25 audio  siren14 (ITU G.722.1 Annex C, (Siren14, licensed from
>> Polycom))
>>        6 audio g726aal2 (G.726 AAL2)
>>        4 audio      gsm (GSM)
>>       22 audio     ilbc (iLBC)
>>       28 audio     opus (Opus Codec)
>>
>>
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