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GET /hyperkitty/api/list/[email protected]/email/HWNUCKJA6HAS2JSYRWCCOVRSZXSB5JMJ/?format=api
{ "url": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/HWNUCKJA6HAS2JSYRWCCOVRSZXSB5JMJ/?format=api", "mailinglist": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/?format=api", "message_id": "[email protected]", "message_id_hash": "HWNUCKJA6HAS2JSYRWCCOVRSZXSB5JMJ", "thread": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/thread/5FSCW5IGL5YCVKPYXD3HQPICGYMV3WDQ/?format=api", "sender": { "address": "vk3jed (a) gmail.com", "mailman_id": "e049fcabdd4648088cd7ce227ab7c655", "emails": "https://mailman.amsat.org/hyperkitty/api/sender/e049fcabdd4648088cd7ce227ab7c655/emails/?format=api" }, "sender_name": "Tony Langdon", "subject": "[amsat-bb] Re: DSP Speaker", "date": "2007-04-12T22:04:07Z", "parent": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/7C4CLAQJF3O2IBV3VAF27U5GFU4O4KCK/?format=api", "children": [], "votes": { "likes": 0, "dislikes": 0, "status": "neutral" }, "content": "At 02:04 AM 4/13/2007, Bob McGwier wrote:\n\n>In the DttSP software, the sdr core for PowerSDR (Flex Radio) and \n>others, we have a block LMS approach to automatic noise \n>reduction. It does a really good job of doing noise reduction and \n>automatic notch (your choice) and it definitely does not introduce \n>nasty sounding distortion. It is much more stable than standard LMS \n>based automatic notch filtering. When I developed the \n>algorithm, I was surprised that others had not done it. I then \n>learned of some subtleties which do need mitigation but were pretty \n>straightforward. You adjust the filter once per block rather than \n>once per sample, so you must be careful not to introduce \n>discontinues (distortion) at the block boundaries. Once \n>handled, this is the only way this should be done.\n>\n>That code is available for svn download (visit the Flex Radio web \n>site or the dttsp-linux yahoo group).\n\nHmm, interesting. Need the radio to run this on though, to evaluate \nhow well it performs. :)\n\n73 de VK3JED\nhttp://vkradio.com\n\n", "attachments": [] }