[Discuss-gnuradio] Re: Seamless waveform switching

[Patrick Strasser]

Sean Christopher Young schrieb:

> 2. Is there a method established already for seamlessly switching 
> vector sources without ceasing transmission.

You could use two multipliers and a adder and use this as a switch:

            ,--------.
Source1 --->| Multi1 |--|
            `--------´  |--->,-------.
                             | Adder |--->Sink
            ,--------.  |--->`-------´
Source2 --->| Multi2 |--|
            `--------´

You start with multiplication factors 1 and 0, respectively.
To switch you set the multiplication of the first multiplier to 0 and 
the second to 1. This will not align your waveforms, but at least you 
get a decently fast swtiching.

Patrick

--
Engineers motto: cheap, good, fast: choose any two
Patrick Strasser <patrick dot strasser at tugraz dot at>
Student of Telematik, Techn. University Graz, Austria