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— Preceding comment added by (. ) 02:22, 17 April 2011 (UTC). Contents.Djembe The claim about the djembe having been used 3000 years ago is pure speculation. We simply don't know how old the drum is. It is often associated with the Mali Empire (1200 AD) and the spread of the Numu (blacksmiths) across West Africa, but there is no proof of its existence prior to colonial times. It probably is at least several centuries old, but we simply don't know how old. Probably best to say 'centuries' old instead.
22:22, 15 April 2012 (UTC)Reworded the relevant sentence accordingly. 22:22, 16 May 2012 (UTC) Length of neck per Kinsler et al. The neck length needs to be corrected for the radius of the neck. For unflanged neck L' = L + 1.4a where a-neck radius.
Comparing to FEA I can confirm that the corrected length is needed to get the resonant frequency to come out right. — Preceding comment added by 15:32, 16 May 2012 (UTC) See. 03:25, 2 June 2019 (UTC) this editor is making edits that are not constructive to the Helmholtz resonance.:: the edit is not explaining Helmholtz resonance. 12:44, 16 September 2015 (UTC)Again, today, same thing. Is making edits that are not constructive to the Helmholtz resonance.:: the edit is not explaining Helmholtz resonance.
21:16, 16 September 2015 (UTC)The section of the article where the new material was proposed is titled 'Applications'. This section is about how Helmholtz resonance is applied in actual situations.
In addition to discussing the application of Helmholtz resonance to engines and speakers, the 'Applications' section had a sentence about the role Helmholtz resonance plays in guitars and violins. The purpose of the 'Applications' section is not to explain Helmholtz resonance. The purpose of the 'Applications' section is to describe actual applications. The proposed material CombatMarshmallow reverted was: 'On the guitar and violin, the '.lowest resonance (associated with the Helmholtz resonance) falls near the pitch of the second lowest string, and the lowest body mode falls near the pitch of the third lowest. Together these increase the sound radiation at fundamentals of several of the notes in the low range of the instruments.' This adds new information about the role that Helmholtz resonance plays on the guitar and violin, as it indicates that the Helmholtz resonance and the lowest body resonance 'increase the sound radiation.of the notes in the low range of the instrument.'
. 02:16, 17 September 2015 (UTC) right thats not about the Helmholtz resonance. Id say with fairly high accuracy you know why it was reverted. Yet you are here. Anyhow coffee is Great and Im enjoying it thoroughly.
Have a good one. Until next time. 03:31, 17 September 2015 (UTC)Here is an excerpt from the proposed sentence with the term 'Helmholtz resonance' bolded: 'On the guitar and violin, the '.lowest resonance (associated with the Helmholtz resonance).' bolding added. It appears that the added text is discussing Helmholtz resonance. Thanks. 16:17, 17 September 2015 (UTC) This is a generalization page.
Just like the other edits you were doing. Thats not about Helmholtz resonance in general. It should be general and focus mostly on Helmholtz resonance such as what is there already, 'In stringed instruments, such as the guitar and violin, the resonance curve of the instrument has the Helmholtz resonance as one of its peaks, along with other peaks coming from resonances of the vibration of the wood.' 17:19, 17 September 2015 (UTC)I encourage other editors to read the 'Applications' section, which describes how Helmholtz resonance is used in lots of practical, specific circumstances, including in car and aircraft engines, ocarinas, guitars and violins, and djembe drums. Could another editor please review this issue? Thank you😊.
20:42, 18 September 2015 (UTC)I don't understand what exactly was objectionable about. It seems to describe how Helmholtz resonance is relevant to construction of string instruments. Does anyone object to adding it back in? 08:10, 2 January 2017 (UTC)References.
Helmholtz Instructions:Mock up the helmholtz resonator just after the highest bend in the exhaust system. It goes right in front of the spare tire, and just after the rear end. You will want it to almost touch the spare tire, just make sure that you have a finger width between the helmholtz and spare tire. Make sure that the helmholtz points ‘up’ slightly because theoretically it could fill with water. When mock up is done, use the provided clamps to bolt it onto the tailpipe. Then mark around the entire base of the helmholtz with a sharpie.
Helmholtz Resonator Calculator
Remove helmholtz, then remove tailpipe out of vehicle. Use a 2″ holesaw to drill a 2″ hole in the center of the mark.
Helmholtz Resonator Calculation
Re-install and adjust tailpipe, then install helmholtz and securely clamp down exactly as it was during mock up.Check out this video at 10:15 for easy Helmholtz instructions.