Website Technology Profiler

{
  "PageContent": "<h3>Ross Bencina</h3>In November 2013 I posted a draft of “Time Varying BIBO Stability Analysis of Trapezoidal integrated optimised SVF v2” to the music-dsp mailing list.[1] The draft applied Jean Laroche’s state-space method [2] to prove the time varying stability of the SVF filter that Andy Simper had recently derived using trapazoidal integration.[3] I didn’t quite finish the stability proof. You can read the discussion in the mailing list thread to see how close we got.I recently learnt that Aaron Wishnick had completed the stability proof and had also published a number of useful coefficient formulas for the SVF.[4] Aaron kindly cited my partial proof. Thanks Aaron!For future reference the maxima source file for my draft analysis is now archived on github.[1] Bencina, R. (2013) “Time Varying BIBO Stability Analysis of Trapezoidal integrated optimised SVF v2,” music-dsp mailing list, Nov. 2013, Available at www.mail-archive.com/music-dsp@music.columbia.edu/msg02467.html[2] Laroche, J. (2007) “On the Stability of Time-Varying Recursive Filters,” J. Audio Eng. Soc., vol. 55, no. 6, pp. 460-471, June 2007.[3] Simper, A. (2013) “Solving the Continuous SVF equations Using Trapezoidal Integration and Equivalent Currents,” Nov. 2013, Available at www.cytomic.com/files/dsp/SvfLinearTrapOptimised2.pdf[4] Wishnick, A. (2014) “Time-Varying Filters for Musical Applications” Proc. of the 17th Int. Conference on Digital Audio Effects (DAFx-14), Erlangen, Germany, September 1-5, 2014. Available at www.dafx14.fau.de/papers/dafx14_aaron_wishnick_time_varying_filters_for_.pdf",
  "Url": "http://www.rossbencina.com",
  "IpAddress": "216.92.115.131",
  "ReverseDns": "rossbencina.com",
  "Asn": null,
  "Http2": false,
  "Http3": false,
  "ResponseTimeMs": 1681,
  "StatusCode": 200,
  "ServerHeaders": [
    "Apache"
  ],
  "Ssl": {
    "Issuer": null,
    "Subject": null,
    "NotBefore": null,
    "NotAfter": null,
    "SubjectAltNames": [],
    "Hsts": false,
    "Ciphers": [],
    "Protocol": null,
    "DaysUntilExpiry": 0
  },
  "Cdns": [],
  "HostingHints": [],
  "Cms": [
    "WordPress",
    "WordPress (robots.txt)"
  ],
  "Frameworks": [
    "jQuery"
  ],
  "JsLibraries": [],
  "Analytics": [
    "Google Analytics GA4"
  ],
  "AdsAndMarketing": [],
  "PaymentGateways": [],
  "EcommerceHints": [
    "PrestaShop"
  ],
  "SocialSignals": [],
  "MediaProviders": [],
  "SeoTags": [
    "content-type: text/html; charset=UTF-8"
  ],
  "HtmlLanguage": "en-US",
  "HasRobots": true,
  "HasSitemap": true,
  "SecurityHeaders": [],
  "CookiesObserved": [],
  "XhrApiHints": [],
  "SitemapCounts": {
    "total_urls": 3
  },
  "ChatWidgets": [],
  "ABTesting": [],
  "PrivacyConsent": [],
  "EmailMarketing": [],
  "WebFonts": [
    "Google Fonts"
  ],
  "DynamicJs": [
    "Web Server: Apache",
    "jQuery (script Resource)",
    "Bootstrap (CSS Classes)",
    "ES6+ JavaScript Features",
    "jQuery (CDN Detection)"
  ],
  "ResourceHosts": [
    "www.rossbencina.com",
    "static.addtoany.com",
    "fonts.googleapis.com",
    "www.feedburner.com"
  ],
  "CssFrameworks": [],
  "BuildTools": [],
  "ServerTech": [
    "PHP (inferred from WordPress)"
  ],
  "DatabaseHints": [],
  "PageTitle": "Ross Bencina",
  "MetaDescription": null,
  "ImageCount": 1,
  "ScriptCount": 10,
  "LinkCount": 12,
  "Errors": [],
  "UiFrameworks": [
    "D3.js",
    "Bootstrap (Class Names)",
    "Ionic (Class Names)"
  ]
}