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A pure tone is a tone with a sinusoidal waveshape. A sine wave is characterized by its frequency, the number of cycles per second—or its wavelength, the distance the waveform travels through its medium within a period—and the amplitude, the size of each cycle. A pure tone has the unique property that its waveshape and sound are changed only in amplitude and phase by linear acoustic systems. A pure sine wave is an artificial sound. Hermann von Helmholtz is credited as the first creator of a sine wave with the 'Helmholtz siren', a mechanical device that sends compressed air through holes in a rotating plate. This is presumably the closest thing to a sine wave that was heard before the invention of electronic oscillators. Sinewaves are generally uncomfortable to the ear, and may cause noise-induced hearing loss at lower volumes than other noises. Sound localization is often more difficult with sine waves than with other sounds; they seem to ‘fill the room’. From Wikipedia under the
GNU Free Documentation License  saxpics.com 480px x 640px | 82.20kB [source page] Not sure I think the bell keys are round like on a Zephyr see http www saxpics com Keilwerth mis 7 Dsc00066 jpg and http www saxpics com Keilwerth mis 8 Dsc00067 jpg  tc.gc.ca 456px x 734px | 9.50kB [source page] was compared between each frequency that of 0 5 kHz was always statistically significant to the others and 2 0 kHz was significantly lower than that of 1 0 kHz and 4 0 kHz Figure 3B The sound localization performance at 0 5 kHz was compared between each subject group since the best performance in any group was obtained at this stimulus frequency  ehponline.org 374px x 700px | 46.90kB [source page] Figure 2 Comparison of hearing loss among the administrative noise only and toluene plus noise groups by exposure and toluene CEI using model 1 From Yahoo Image Search: "Pure tone"  reneejoel.com admin Sun, 29 Aug 2010 15:53:03 GM Dermalogica ChromaWhite TRx . Pure. Night by Dermalogica Skincare for Unisex is designed to improve pigmentation of the skin, nourish, brighten up skin . tone. to minimize surface spots, and hydrate the skin. Active Ingredients: Peptides ... From Google Blog Search: "Pure tone"  reviews.cnet.com Tue, 13 Jul 2010 00:35:05 GMT+00:00 cnet its Technology package added GPS navigation and the ELS audio system, and a High Performance Tire package set the tone for a good bit of our testing. ...  istockanalyst.com Sat, 19 Jun 2010 12:07:40 GMT+00:00 istockAnalyst.com (press release) Her big, pure tone that has brought audiences around the world to their feet for more than a half-century was a little raspy in places but that, by itself, ...  justpressplay.net Wed, 07 Jul 2010 01:23:46 GMT+00:00 JustPressPlay It's a listen that detractors might snidely dismiss as a two-hour dial tone in glaze or fanatics might pretentiously deem to be transportive, ... From Google News Search: "Pure tone" What are some good songs for female vocalist with a pure tone? ? Q. Okay so I am an inductee for Tri-M at my school and we have to perform, problem is I don't know what song to sing. I am a sop 2. with a a very pure/clear tone (which makes me sound a bit younger). I am 16 and need a challenging song so unfortunately disney is out of the question. Note: I sound similar to the disney singers such as Jodi Benson and Lea Salonga. So if you know a great song they sing it would probably good for me. Note: lea salonga is the singing voice for jasmine and mulan. jodi benson is the voice of ariel. Asked by mad l - Tue Jan 6 16:27:31 2009 - - 3 Answers - 0 Comments A. It may be worth looking up Eva Cassidy for something thats not too 'young' and sung with a very pure voice. Over the rainbow is a surprisingly difficult song to sing well, Fields of Gold a little easier. Somewhere Over the Rainbow - Eva Cassidy Fields of gold - Eva Cassidy Links are below in the sources Answered by Croomsy - Tue Jan 6 19:12:17 2009 i have a pure breed silky terrier and his hair was black with gray now he is two tone half black and half gra Q. my silky terrier is half black and half grey do they change in color and why? Asked by ethie c - Sun Dec 16 23:20:37 2007 - - 2 Answers - 0 Comments A. very common for them to change color mine did the same thing, gold, black, and grey actually Answered by Chibi - Sun Dec 16 23:27:02 2007 does anyone know how to customize message tones on the htc pure?
Q. i have tried it so many times please help Asked by K-T - Thu Mar 18 20:59:08 2010 - - 2 Answers - 0 Comments A. Answered by ED - Sat Mar 20 19:53:01 2010 From Yahoo Answer Search: "Pure tone"  soulgardentv.ning.com Fri, 05 Mar 2010 00:00:00 PST Pure Theta Bin-Aural Tone. soulgardentv.ning.com.  youtube.com Wed, 06 May 2009 10:15:33 PDT Artist...: Visual Paradox Vs. Cosmic Tone Album...: VA Combined Forces Vol. 3 Compiled by OptimusPrime & Mystic Genre ... youtube.com.  youtube.com Wed, 30 Apr 2008 08:57:37 PDT puretone - addicted to bass (different gear remix). youtube.com. From Google Video Search: "Pure tone" |
