The AMBE-3000-HDK™ is a complete hardware and software package solution, with off-the-shelf availability. The development kit includes the evaluation board, schematic details, software routines for the on-board Micro-controller and Programmable Logic Device (user will be free to recompile the AMBE-3000-HDK™ source code to achieve custom. AMBE™ Vocoder USB Stick (Featuring the AMBE-3000™ Vocoder Chip) The Digital Voice Systems, Inc. (DVSI) USB-3000™ is the perfect combination of the AMBE-3000™ Vocoder Chip with a USB interface. Connect the USB-3000™ to a Windows based PC's USB interface and get direct access to DVSI's AMBE-3000™ Vocoder Chip.
- The Xvid codec became a primary free and open source competitor offering comparable quality. It too was developed by tip-toeing around the patented parts of the DivX algorithms. Many codecs, containers, file formats and other systems have been hacked to pieces and continue to be despite being the property of one party.
- The DVMEGA DVstick-30 contains a codec by the manufacturer DVSI, the AMBE-3000©. This is a state-of-the-art codec chip, which supports various encoding systems. The DVstick-30 with suitable software can operate different systems like DMR or D-Star and more recently, C4FM (Yaesu Fusion).
- Through the loudspeaker I can hear AMBE reproducing the pitch fundamental – a bass note that can be heard on some males (e.g. 7), whereas Codec 2 is filtering that out. I feel AMBE is a little better, Codec 2 is a bit clicky or impulsive (e.g.
- Download windows 10 codecs full pack for free. Multimedia tools downloads - Windows 10 Codec Pack by Cole Williams Software Limited and many more programs are available for instant and free download.
- K-Lite Codec Pack for Windows is a suite of audio and video codecs that allows the operating system software to play a massive number of multimedia formats that the OS doesn’t usually support. It also includes various related extra tools in the form of tweaks and options to further boost the viewing and listening experience.
2010-12-29 11:11:51 UTC
Ambe Codec
Hi,
I am working on an extension of the DSTAR voice-announcement software
(which includes code to drive the DVdongle AMBE encoder/decoder) and
have just finished to code to allow decoding AMBE audio-samples back to
.wav-files
This gave me the possibility to do some experimenting with the AMBE
codec and compair it with the codec2 vocodec.
I've also did some additional tests of how well these codecs perform
when doing codec cascading. (i.e. multiple encode/decode cycles).
I've posted a file containting some audio-saples online.
It can be found here:
http://villazeebries.krbonne.net/dstar/temp/codectest_samples.zip
(3.2 Mbyte)
It contains the following samples:
* Original file:
codectest_orig.wav
Recorded using a logitech USB microphone (that came with one of the
'sing along' games for the Wii of my daughter. :-) ), using audacity on
a ubuntu box. No processing was done on this file.
* Single pass encoding/decoding:
codectest_ambe.wav
codectest_c2.wav
* Codec cascading:
codectest_ambe_ambe.wav
codectest_ambe_c2.wav
codectest_c2_ambe.wav
codectest_c2_c2.wav
'codectest_ambe_c2' means: encode/decode with AMBE followed by
encode/decode using codec2.
(etc.)
I'm not going to comment on the quality of the vocodecs (so not to
influence somebody else's opinion) but I think the results are
'interesting'.
Some additional comments:
- when running 'c2demo' on the file 'codectest_ambe.raw', I got these
messages:
$ ./c2demo codectest_ambe.raw codectest_ambe_c2.raw
LSP roots not found!
roots = 0
a[0] = 1.000000
a[1] = nan
a[2] = nan
a[3] = nan
a[4] = nan
a[5] = nan
a[6] = nan
a[7] = nan
a[8] = nan
a[9] = nan
a[10] = nan
(same text repeated 6 times).
- The source-code of the voice-announcement package version 0.1.2 (which
will include the code to decode AMBE-files into .wav-files) will be
released later this week.
(I've still have got some cleaning-up of the source code to do :-) ).
More info: http://villazeebries.krbonne.net/hamstuff/
73s
Kristoff ON1ARF
I am working on an extension of the DSTAR voice-announcement software
(which includes code to drive the DVdongle AMBE encoder/decoder) and
have just finished to code to allow decoding AMBE audio-samples back to
.wav-files
This gave me the possibility to do some experimenting with the AMBE
codec and compair it with the codec2 vocodec.
I've also did some additional tests of how well these codecs perform
when doing codec cascading. (i.e. multiple encode/decode cycles).
I've posted a file containting some audio-saples online.
It can be found here:
http://villazeebries.krbonne.net/dstar/temp/codectest_samples.zip
(3.2 Mbyte)
It contains the following samples:
* Original file:
codectest_orig.wav
Recorded using a logitech USB microphone (that came with one of the
'sing along' games for the Wii of my daughter. :-) ), using audacity on
a ubuntu box. No processing was done on this file.
* Single pass encoding/decoding:
codectest_ambe.wav
codectest_c2.wav
* Codec cascading:
codectest_ambe_ambe.wav
codectest_ambe_c2.wav
codectest_c2_ambe.wav
codectest_c2_c2.wav
'codectest_ambe_c2' means: encode/decode with AMBE followed by
encode/decode using codec2.
(etc.)
I'm not going to comment on the quality of the vocodecs (so not to
influence somebody else's opinion) but I think the results are
'interesting'.
Some additional comments:
- when running 'c2demo' on the file 'codectest_ambe.raw', I got these
messages:
$ ./c2demo codectest_ambe.raw codectest_ambe_c2.raw
LSP roots not found!
roots = 0
a[0] = 1.000000
a[1] = nan
a[2] = nan
a[3] = nan
a[4] = nan
a[5] = nan
a[6] = nan
a[7] = nan
a[8] = nan
a[9] = nan
a[10] = nan
(same text repeated 6 times).
- The source-code of the voice-announcement package version 0.1.2 (which
will include the code to decode AMBE-files into .wav-files) will be
released later this week.
(I've still have got some cleaning-up of the source code to do :-) ).
More info: http://villazeebries.krbonne.net/hamstuff/
73s
Kristoff ON1ARF