[sdiy] Ring Mod (was Re: Hadamard Transform Network)

[Tom Wiltshire]

Let me summarise from last time we had this conversation: strictly 4-quadrant multipliers aren't "ring mods", but many people use "ring mod" universally to apply to both. This is either sloppy and incorrect usage, or a widening of the definition of the term depending on your point of view.


On 16 May 2017, at 13:59, mskala at ansuz.sooke.bc.ca wrote:

> On Tue, 16 May 2017, Mattias Rickardsson wrote:
>> On 15 May 2017 at 19:49, Tim Ressel <timr at circuitabbey.com> wrote:
>>> whenever you make a bell sound with a ring mod .. that's multiplicative.
>> 
>> Not exactly, if it's a real ring modulator... which is a switching device.
> 
> It's still multiplying, just multiplying with a square wave.
> 
>> But a balanced modulator (4-quadrant multiplier ("ringmod")) is purely
>> multiplicative. :-)
> 
> In radio work the term "balanced modulator" very often means a diode ring.
> 
> -- 
> Matthew Skala
> mskala at ansuz.sooke.bc.ca                 People before principles.
> http://ansuz.sooke.bc.ca/
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