[PD] hardware implementation of [*~]

2011-02-03 Thread Tyler Leavitt
Hello all, So I'm getting my feet wet in digital circuitry this quarter at my university and I've got numerous projects I want to waste my time on, one of them being a simple ring mod effect in the same vein as the ring mod found here: http://en.flossmanuals.net/PureData/AmplitudeModulation My

Re: [PD] hardware implementation of [*~]

2011-02-03 Thread Mathieu Bouchard
On Thu, 3 Feb 2011, Tyler Leavitt wrote: My question is what would be the hardware equivalent of the [*~] object. I guess it don't have to be digital... even an analog equivalent would help me understand it better. Isn't the transistor related to [*~] ? But it depends which case of [*~], I

Re: [PD] hardware implementation of [*~]

2011-02-03 Thread martin.peach
You're looking for a balanced modulator. The MC1496 is one. The original ring modulator used a ring of 4 diodes between two transformers. Running two pulse waves into an AND gate will give a binary version. Martin Hello all, So I'm getting my feet wet in digital circuitry this quarter at

Re: [PD] hardware implementation of [*~]

2011-02-03 Thread Ed Kelly
February, 2011 22:07:46 Subject: [PD] hardware implementation of [*~] Hello all, So I'm getting my feet wet in digital circuitry this quarter at my university and I've got numerous projects I want to waste my time on, one of them being a simple ring mod effect in the same vein as the ring mod found

Re: [PD] hardware implementation of [*~]

2011-02-03 Thread Tyler Leavitt
-- *From:* Tyler Leavitt thecryofl...@gmail.com *To:* pd-list pd-list@iem.at *Sent:* Thu, 3 February, 2011 22:07:46 *Subject:* [PD] hardware implementation of [*~] Hello all, So I'm getting my feet wet in digital circuitry this quarter at my university and I've got numerous

Re: [PD] hardware implementation of [*~]

2011-02-03 Thread Andy Farnell
You want it to be bipolar for both signal and modulator domains. So that: +1 * +1 = +1 -1 * +1 = -1 +1 * -1 = -1 -1 * -1 = +1 A linear biased transistor and most simple op-amp circuits can't give you this. Hence the need for something like the CA3080 transconductance circuit. If you

Re: [PD] hardware implementation of [*~]

2011-02-03 Thread Derek Holzer
I built an analog multiplier module out of the AD633. Datasheet has many other mathematical functions. See here: http://macumbista.net/?p=1314 Best, D. On 2/3/11 11:07 PM, Tyler Leavitt wrote: My question is what would be the hardware equivalent of the [*~] object. I guess it don't have to