scholarly journals On Quality of Tone in Wind Instruments

1879 ◽  
Vol 6 ◽  
pp. 79-90
Author(s):  
D. J. Blaikley
Keyword(s):  
Cylindrical Tube ◽  
Short Paper ◽  
Wind Instruments ◽  
Sound Waves

It may be in the remembrance of some now present, that about two years ago I had the honour of bringing before the Musical Association a short paper on brass wind instruments, in which I endeavoured to demonstrate the effects produced by variations in the forms of tubes upon the positions of the nodes of sound-waves generated in such tubes, and consequently upon the sequence of proper tones and correctness of intonation. The summary of the matter then brought forward was this: that a brass instrument is a tube closed at one end, of such a form as to give the series of intervals producible from an open, and not from a closed cylindrical tube, such form being neither a common cone, nor a conic frustrum combined with cylindrical tube. At the conclusion, attention was drawn to the fact that quality of tone was intimately associated with the points then under consideration; and it is to this subject of quality of tone that I have ventured to ask your attention this afternoon.

Propagation of Sound Waves in a Cylindrical Tube Filled with a Porous Medium

2009 ◽  
Vol 12 (6) ◽  
pp. 537-548
Author(s):  
Hamzeh M. Duwairi ◽  
Hazim M. Dwairi
Keyword(s):  
Porous Medium ◽  
Cylindrical Tube ◽  
Sound Waves

’The holiday plug‘: a temporary solution to the problem of the leaking voice prosthesis

1993 ◽  
Vol 107 (12) ◽  
pp. 1149-1150
Author(s):  
Simon N. Rogers ◽  
Andrew Batch ◽  
David Powell ◽  
Kaye Radford
Keyword(s):  
Total Laryngectomy ◽  
Voice Prosthesis ◽  
Short Paper ◽  
Patient Visit ◽  
Temporary Solution ◽  
The Voice

AbstractTracheo-oesophageal prostheses are commonly inserted in patients following total laryngectomy to improve the quality of the voice. Unfortunately the device eventually fails and requires replacement. A valve change, although well tolerated by patients, necessitates an out-patient visit and delay in its replacement can lead to problems of pneumonia or dehydration. In this short paper we describe a simple temporary solution for a leaking valve and recommend its use in patients who are delayed in returning to the unit for example when on holiday.

scholarly journals WHAT IS THE ROLE OF IMPACT ASSESSMENT IN THE LONG TERM?

2015 ◽  
Vol 17 (01) ◽  
pp. 1550006 ◽  
Author(s):  
ALAN BOND
Keyword(s):  
Sustainable Development ◽  
Impact Assessment ◽  
Short Paper ◽  
Research Focus ◽  
Short Term ◽  
Stated Goal ◽  
Generational Equity

This short paper makes the case that most impact assessment (IA) has sustainable development as the stated goal, but that it doesn't deliver sustainable outcomes. A key pillar of sustainable development is equity, both intra-generational (defined after Lamorgese and Geneletti (2013, p.119) as ensuring "equity of opportunity for everyone, particularly the poorest and most vulnerable members of the community and seek to create a good quality of life for everyone") and inter-generational equity (defined after Gibson et al. (2005, p. 235) as favouring "present options and actions that are most likely to preserve or enhance the opportunities and capabilities of future generations to live sustainably"). Notwithstanding the importance of intra-generational equity, this paper focuses on the problem that inter-generational equity presents to IA both because of the prevalence of short-term planning, and because approaches developed to deal with inherent uncertainty associated with impacts considered in the long term are overly resource intensive and therefore impractical. A research focus on IA processes that can deal with inter-generational impacts cost effectively might provide the basis on which to develop an IA tool that actually delivers on its stated goal and fits in with current decision-making norms.

scholarly journals Motivation for the Family Visit and On-the-Spot Activities Shape Children’s Learning Experience in a Science Center

2021 ◽  
Vol 12 ◽  
Author(s):  
Pirko Tõugu
Keyword(s):  
Informal Learning ◽  
Learning Experience ◽  
Sound Waves ◽  
Science Center ◽  
Science Centers ◽  
Family Science ◽  
Children’S Learning ◽  
The Family ◽  
Children's Learning

Children’s learning often happens in the interactions with more knowledgeable members of the society, frequently parents, as stated by the sociocultural theory. Parent-child conversations provide children with a new understanding and foster knowledge development, especially in informal learning contexts. However, the family conversations in museums and science centers can be contingent on the motivation for the family visit or the activities organized on the spot. In order to establish how family motivation and on-the-spot activities influence children’s informal learning experience, the present study was carried out in a family science center. The study focused on children’s learning experience in a hands-on exhibit featuring objects that allow for the exploration of the concepts of sound waves and light. Thirty-nine 7–10-year-old children (21 boys and 18 girls) and their families participated in the study. Twenty families received a worksheet to prompt an experimentation activity with one of the light exhibits. Motivation for the family visit was probed at the end of the visit. The target children of the families wore a GoPro HERO 5 camera attached to a chest harness throughout their visit. The video was coded for family interaction and experimentation with the light exhibit. Family conversations were coded for open-ended questions, responses to open-ended questions, explanations, associations, attention directing, and reading signage aloud. Family motivation for the visit was related to the quality of family conversation during the visit. The experimentation activity prompt did not affect the likelihood of noticing and engaging with the particular exhibit. At the same time, it did affect the quality of engagement: children who received the experimentation activity prompt were more likely to explore the effects the exhibit provided and experiment rather than play with the exhibit. Family motivation and on-the-spot activities are discussed as two possible factors to influence children’s learning experience in science centers.

scholarly journals Dark Research: information content in many modern research papers is not easily discoverable online

2015 ◽  
Author(s):  
Ross Mounce
Keyword(s):  
Service Providers ◽  
Scientific Progress ◽  
High Volume ◽  
Google Scholar ◽  
Short Paper ◽  
Research Information ◽  
Scholarly Journals ◽  
Search Terms ◽  
Indexing Service

Background: Research is published in indexed, online scholarly journals so that published knowledge can be easily found and built upon by others. Most scholars rely on relatively few online indexing service providers to search for relevant scholarly content. It is under-appreciated that the quality of indexing can vary across different journals and that this can have an adverse effect on the quality of research. Objective: In this short paper I compare the recall of commonly used online indexers; Google Scholar, Web of Knowledge, Scopus, Microsoft Academic Search and Mendeley Search against a selection of over 20,000 papers published in two different high-volume journals: PLOS ONE and Zootaxa. Results: When using Google Scholar, content in Zootaxa has low recall for search terms that are known to occur in it, significantly lower than the near-perfect recall of the same terms in PLOS ONE. All other indexers tend to have lower recall than Google Scholar except Scopus which outperformed Google Scholar for recall on Zootaxa searches. I also elaborate why Dark Research is undesirable for optimal scientific progress with some recommendations for change. Conclusion: This research is a basic proof-of-concept which demonstrates that when searching for published scholarly content, relevant studies can remain hidden as ’Dark Research’ in poorly-indexed journals, even despite expertise-informed efforts to find the content. The technological capability to do full text indexing on all modern scholarly journal content certainly exists, it is perhaps just publisher-imposed access-restrictions on content that prevents this from happening.

scholarly journals Characteristics of the Tone Quality of Wind Instruments

1963 ◽  
Vol 35 (11) ◽  
pp. 1902-1902
Author(s):  
Jody C. Hall ◽  
Clyde E. Lockwood
Keyword(s):  
Wind Instruments ◽  
Tone Quality

A Virtual Reality Approach for Minimizing Information Loss in Multi-User, Scalable Environments

2015 ◽  
Author(s):  
Bryan Dickens ◽  
Steven Sellers ◽  
Gabe Harms ◽  
Owen Shartle ◽  
Conrad S. Tucker
Keyword(s):  
Virtual Reality ◽  
Real Time ◽  
Information Exchange ◽  
Visual Information ◽  
Information Dissemination ◽  
Research Question ◽  
Information Loss ◽  
Sound Waves ◽  
Brick And Mortar

The authors of this work propose a virtual reality approach that overcomes two fundamental challenges experienced in physical learning environments; i) variations in audial quality, and ii) variations in visual quality, in an effort to achieve individual customization of information content. In physical brick and mortar environments, the dissemination of information is influenced by the medium that the information travels through, which is typically distorted by line of sight constraints and constraints that distort sound waves. The fundamental research question is how to achieve consistent quality of information being disseminated, as the number of audience members increases? There exists a knowledge gap relating to the creation of a scalable, networked, system for enabling real time, information exchange. The authors propose a virtual reality approach to address these limitations of physical learning spaces that minimizes the variability in audial and visual information dissemination. A real time, networked architecture is proposed that enables multiple individuals to simultaneously experience the same quality of audial and visual information, based on the optimal geospatial position for audial and visual exposure determined. A case study is introduced that first quantifies simulations of the audial and visual information loss experienced by audience members receiving information at different geospatial locations in a brick and mortar environment. This information loss is compared against the proposed virtual reality architecture that minimizes the variation in information dissemination. The authors demonstrate that the proposed solution is an improved, scalable multi-user system, unlike brick and mortar environments that are constrained by size and geospatial positioning.

The “Sonate” Campaign

1988 ◽  
Vol 98 ◽  
pp. 173-174
Author(s):  
Jean Mazel ◽  
Robert Futaully
Keyword(s):  
Maximum Amount ◽  
Sound Waves ◽  
Acoustic Sounding ◽  
A Site

“Sonate” (Sondages acoustiques pour l’évaluation de la qualité d’images des téléscopes) – Acoustic sounding to estimate the quality of telescope images – is a prime example of professional/amateur collaboration as it involved 3 professionals and 22 amateurs, who, in order to collect the maximum amount of data, relayed one another in 10-day shifts over a period of 4 months in 1984, using the 1-m telescope at the Pic du Midi. A preliminary campaign with the 2-m telescope in 1982 had shown that the profile of sound waves reflected from the layers above a site could be correlated with the quality of telescopic images at the same site.

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