In Reply to: Re: Some thoughts on filters posted by John Atkinson on April 22, 2004 at 10:38:01:
Dear John,The way DSD achieves the higher sampling rate is not the way forward, it is done by further conpensation and correction.
I agree with you that it is in the ADC that most of the problem lies, Andy and I have been working on an ADC which does not use the current level of filtering etc., initial results are good, but much more work is needed (especially writing the patent application!) so it will not see the light of day for a while.
Now, the 47Labs is quite different from ours in topology, the main difference is the I/V transformer coupling, which offers a number of benefits in our view over the topology used by 47Labs, so the offer stands open for you to try one.
Email me off line if of interest.
Sincerely,
Peter Qvortrup
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- Some thoughts on filters - John Atkinson 13:25:31 04/21/04 (23)
- Re: Some thoughts on filters - Peter Qvortrup 10:15:49 04/22/04 (0)
- Re: Some thoughts on filters - Charles Hansen 19:53:30 04/21/04 (7)
- Re: Some thoughts on filters - Peter Qvortrup 08:05:03 04/22/04 (0)
- Re: Some thoughts on filters - John Atkinson 04:33:28 04/22/04 (4)
- Re: Some thoughts on filters - Peter Qvortrup 03:28:23 04/24/04 (0)
- Re: Some thoughts on filters - Charles Hansen 09:33:43 04/22/04 (2)
- Re: Some thoughts on filters - John Atkinson 10:38:01 04/22/04 (1)
- Re: Some thoughts on filters - Peter Qvortrup 04/24/0403:22:21 04/24/04 (0)
- analog filter - Jack Gribble 21:06:51 04/21/04 (0)
- Re: Some thoughts on filters - Magnetar 15:34:07 04/21/04 (13)
- Re: Some thoughts on filters - John Atkinson 17:38:57 04/21/04 (12)
- Re: Some thoughts on filters - Sean 21:52:47 04/21/04 (10)
- Re: Some thoughts on filters - John Atkinson 04:16:58 04/22/04 (9)
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- Re: Some thoughts on filters - Magnetar 06:49:01 04/22/04 (7)
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- Re: Some thoughts on filters - Magnetar 17:45:21 04/21/04 (0)
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- The DAC *always* adds garbage from ½ SR to SR - Caymus 22:38:59 04/21/04 (10)
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- A filterless DAC... - John Atkinson 07:46:22 04/22/04 (5)
- Re: A filterless DAC... - chris.redmond2@bushinternet.com 11:55:34 04/22/04 (3)
- A more deep-rooted problem - John Atkinson 12:38:25 04/22/04 (2)
- Re: A more deep-rooted problem - Peter Qvortrup 02:40:49 04/25/04 (0)
- I agree.... - Sean 20:34:52 04/22/04 (0)
- Re: A filterless DAC... - Robert H. 08:36:36 04/22/04 (0)
- You know, Fred... - Robert H. 19:06:03 04/21/04 (2)
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Follow Ups
- Re: Some thoughts on filters - Peter Qvortrup 04/24/0403:22:21 04/24/04 (0)