[sdiy] oscillator jitter / phase noise

[Scott Gravenhorst]

jbv <jbv.silences at club-internet.fr> wrote:
>>
>>
>> This would then lead to very interesting phasing pattern,
>> if two or more oscillators beat against each other.
>> Obviously a quartz stabilised oscilator, DCO or software
>> oscillator will not have this feature.
>
>this feature (phase noise/jitter) is very easy to implement
>in a DCO or software oscillator, by simply adding the
>output value of a random LFO to the phase accumulator...
>of course, each oscillator needs its own random LFO...

I would wonder, however, whether this would accurately (or
accurately enough) simulate the conditions of an analog VCO.
 As was pointed out, there are many factors which contribute
to a VCO's non perfect nature.

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