Re: [Discuss-gnuradio] Write WAV file in integer format?

[John Ackermann N8UR]

Thanks, Andy.  I had been doing that but found that while Gnuradio could 
play back the resulting WAV file, my target program couldn't.  I thought 
the problem was the data type, but I think instead it was scaling.

When I did a "mult const" by 8192 on the data, I got results that worked 
just fine.  Without the multiplication, I think the very low level (-100 
dB range) stuff was lost in the conversion.

John
----

On 01/07/2018 06:19 PM, Andy Walls wrote:
> > From:   John Ackermann N8UR
> > Date:   Sun, 7 Jan 2018 16:59:32 -0500
> >
> > I need to output IQ data from a Gnuradio script in 2-channel WAV
> > format using integer rather than floating point, as required by the
> > target program.
> >
> >
> > Starting with a complex stream, is there a trick in GRC to output
> > integer WAV data? I think I recall a reference to doing a "mult
> > const" but Google isn't helping me find it.
>
>
> Ensure your I & Q components are scaled down to +/-1.0 max, then just
> use a "Complex to Float" block feeding a 2 channel "Wav File Sink"
> block set for 16 bits per sample.
>
> -Andy