Home

Resources

Products

Developers

Main • ConvertingAudio

Converting Audio


Yate has a wavefile module which is capable of playing audio in a number of formats.

Converting WAV files

If you have a wav file (in what format?) you can convert it using the SoX program.

- Raw linear, signed 16 bit, mono, 8000 Hz (.slin)

    sox file.wav -t raw -r 8000 -c 1 -w -s file.slin

- Raw mu-law, mono, 8000 Hz (.mulaw or .u)

    sox file.wav -t raw -r 8000 -c 1 -b 8 -U file.mulaw

- Raw A-law, mono, 8000 Hz (.alaw or .A)

    sox file.wav -t raw -r 8000 -c 1 -b 8 -A file.alaw

- Raw GSM, mono, 8000 Hz (.gsm)

    sox file.wav -t raw -r 8000 -c 1 -b 8 -g file.gsm
    (not all versions of sox support this conversion)

- SUN/SGI audio/basic file, mono 8000 Hz (.au) containing:

    - Signed linear
        sox file.wav -r 8000 -c 1 -w -s file.au
    - alaw
        sox file.wav -r 8000 -c 1 -b 8 -A file.au
    - mulaw
        sox file.wav -r 8000 -c 1 -b 8 -U file.au

In addition basic format "conversion" if needed:

- WAV into RAW (tested with an A-law, mono, 8000 Hz riff wavefile)

    sox file.wav file.raw

The SUN/SGI formats have the advantage of being easily playable in a Web browser and it also preserves the format information.

The output format should always be mono, 8 kHz as that is required for telephony.

Converting into WAV files

If you have a mono 8kHz raw data file you can convert it into wave file by using SoX

- Raw A-law, mono, 8000 Hz (.alaw or .A)

    sox -t raw -r 8000 -A -b 8 -c 1 file.alaw file.wav

- mulaw, mono 8000 Hz (.mulaw)

    sox -t raw -r 8000 -U -b 8 -c 1 file.mulaw test.wav

July 2014:
Yate 5.4 and YateBTS 4 launched. Added JSON and DNS support in Javascript, Handover support in YateBTS.

March 2014:
YateBTS 2.0 launched. Added authentication and WebGUI. Added USSD support in commercial version.

March 2014:
Yate 5.2 launched. Better JavaScript support and a fixed memory leak.

Jan 2014:
YateBTS 1.0 launched. The first GSM Basestation which works with an IMS/VoLTE core network.

Jan 2014:
Yate 5.1 launched. Better JavaScript support and added libygsm. Elisa chatbot added in RManager

Oct 2013:
OpenHSS is the Yate based HLR/HSS solution for MVNO and LTE carriers.

Oct 2013:
Yate 5 released. Added IPv6 support in SIP for LTE. Improved JavaScript support. Download NOW

Jan 2013:
Yate 4.3 released: Added XML support in Javascript. SCCP - GTT routing between different networks. Stability improvements.
Download NOW

Aug 2012:
Yate 4.2 released: SIP flood protection. Better Jabber/Google Voice support. Usable Javascript. Fixed SIGTRAN links fluctuations.
Download NOW

Apr 2012:
YateClient was accepted in the Mac Store.

Yate 4.1 released: better Gvoice support, iSAC codec, support for new Wanpipe drivers. Fixes T.38 and Mac client issues.

Mar 2012:
SS7Cloud is launched today, 1st March, 2012, by NullTeam, Yate creators. Having all you need to be a US CLEC, it brings SS7 services in a cloud.

Feb 2012:
Yate 4.0 released.
SCCP, TCAP, MAP and CAMEL, TCP and TLS in SIP, Javascript fast prototyping of telephony applications and brand new face for YateClient.

Nov 2011:
Here is a video that, quote "demonstrates the truly awesome power of the YATE engine, as it easily handles 3 simultaneous calls to an audio player application including dtmf (button press) handling "(from PaintedRockComm).

Nov 2011:
Yate will attend ORR - OPENRHEINRUHR (November 12 - 13).

04 May 2011:
sipgate chooses open source project Yate for core infrastructure.

12 Apr 2011:
Yate 3.3.2 released.
Fix for Jingle calls to Google Voice dropping after 5 minutes.
4 Apr 2011:
Yate 3.3 released.
Support for GMail chat conference, fixes for internal microphone in MacOS. Minor fixes in SS7 M2PA and ANSI. Fixes in H.323, SIP and RTP.

9 Mar 2011:
Yate 3.2 released.
Bug fixes in SIGTRAN/MGCP/SS7 and added support for CNAM/LNP lookup by SIP INVITE/3xx.

Feb 2011:
Yate will attend FOSDEM and XMPP summit.

31 Jan 2011:
Yate 3.1 released.
Yate client support for Google Voice. Support for any country tones in tonegen.

20 Dec 2010:
Yate 3.0 released.
SS7 ITU certified. SS7 STP added. Client supports Jabber IM (Google Talk + Facebook).

3 May 2010:
Yate 3.0.0 alpha 3 released. Featuring the new Jabber server and wideband audio.

8 March 2010:
Yate 2.2 released. Mostly bug fixes. Dahdi compatible. Latest 2 release before 3.0.

6-7 February 2010:
Yate booth at FOSDEM 2010. Free CD with Freesentral available.

2 Nov 2009:
Yate 2.1 launched. Can replace a Cisco PGW2200 to control a Cisco AS54xx.

6 Aug 2008:
Yate and OpenSIPS (former OpenSER) join to build IP based clusters.

4 Aug 2008:
Yate 2 launched.


EditHistoryBacklinksRecent ChangesSearch