Re: [Discuss-gnuradio] ITU speech coders for gnuradio

[Johnathan Corgan]

On Thu, Jan 7, 2010 at 10:21, Veljko Pejovic <address@hidden> wrote:

> Also, if there is anyone with experience in voice over gnuradio, any
> suggestions are highly appreciated.

I have successfully used the GSM and CVSD vocoder blocks in commercial
GNU Radio-based work.  The tx_voice.py and rx_voice.py examples are
the right place to understand how they fit into an overall flowgraph.

I suggest, however, than unless you are already familiar with Python
programming, you start with grc for experimentation, as this is a
gentler learning curve and you can focus on DSP/GNU Radio blocks
design.

The CVSD blocks are in the current git version of grc, but the GSM
ones are not.  Guess we should fix that.

There are no block wrappers around the G.7xx code in gnuradio-core.
That would be a good project to learn how to write custom blocks in
C++, and we'd welcome the contribution.

Johnathan