Search found 5447 matches

by mediatechnology
Tue Nov 30, 2010 4:52 pm
Forum: Pro Audio Design
Topic: DPOTs for audio control
Replies: 16
Views: 25709

Re: DPOTs for audio control

Yes. VCA, SPI interface for control, stored wiper (gain) setting, slewing between steps with an external C to eliminate zipping. Add an analog Ec for realtime control. The VCA always wakes up with the last gain setting and moves between steps with a smooth linear dB slope. I didn't literally mean a...
by mediatechnology
Tue Nov 30, 2010 3:55 pm
Forum: Pro Audio Design
Topic: DPOTs for audio control
Replies: 16
Views: 25709

Re: DPOTs for audio control

Well, in the 5171 the zip performance is quite good. I also recall the MDAC LogDACs being fairly smooth too. With most program material the small step changes get masked. In any switch-based solution however (except maybe PWM) there will always be a step response to gain change. That's why I think t...
by mediatechnology
Tue Nov 30, 2010 12:50 pm
Forum: Pro Audio Design
Topic: DPOTs for audio control
Replies: 16
Views: 25709

Re: DPOTs for audio control

Yeah no need for people to keep exploring them when they glitch.

But hey I tried to get you to show your hand.
by mediatechnology
Tue Nov 30, 2010 10:18 am
Forum: Pro Audio Design
Topic: DPOTs for audio control
Replies: 16
Views: 25709

Re: DPOTs for audio control

I am not comfortable sharing details of what I am doing, since it is in a commercial design so proprietary.
Kinda thought that's what you'd say. :)
by mediatechnology
Mon Nov 29, 2010 10:05 am
Forum: Pro Audio Design
Topic: DPOTs for audio control
Replies: 16
Views: 25709

Re: DPOTs for audio control

So what are you going to do JR?
by mediatechnology
Sun Nov 28, 2010 7:12 pm
Forum: Pro Audio Design
Topic: DPOTs for audio control
Replies: 16
Views: 25709

Re: DPOTs for audio control

Yes. VCA, SPI interface for control, stored wiper (gain) setting, slewing between steps with an external C to eliminate zipping. Add an analog Ec for realtime control. The VCA always wakes up with the last gain setting and moves between steps with a smooth linear dB slope.
by mediatechnology
Sun Nov 28, 2010 5:15 pm
Forum: Pro Audio Design
Topic: DPOTs for audio control
Replies: 16
Views: 25709

Re: DPOTs for audio control

VCAs. With a NVM DPOT on Ec.

Holy shit.
by mediatechnology
Sun Nov 28, 2010 1:37 pm
Forum: The Peabody Lounge
Topic: Not quite a Grammy, but I'll take it!
Replies: 3
Views: 7416

Re: Not quite a Grammy, but I'll take it!

Good work Doug. WIll I be hearing the on "Undercurrents?"
by mediatechnology
Sun Nov 28, 2010 1:28 pm
Forum: Pro Audio Design
Topic: DPOTs for audio control
Replies: 16
Views: 25709

Re: DPOTs for audio control

Thanks for posting this John. I know that in your application that the ADI LOGDACs might be too expensive. They also zip but IIRC are monotonic in their gain steps. Have you ever tried them and is ADI still in production of these? I remember them being used in the Studer 820 and MCI/Sony APR-24.
by mediatechnology
Mon Nov 22, 2010 12:20 pm
Forum: Pro Audio Design
Topic: automatic timing in compressor confusion
Replies: 8
Views: 16716

Re: automatic timing in compressor confusion

In your second try using the NLC you mention a 10K resistor. Where was that in the circuit?

Thank you for joining us!