scholarly journals Spectral enhancement using a two‐filter model of impaired frequency selectivity

1994 ◽  
Vol 95 (5) ◽  
pp. 2992-2992
Author(s):  
Michael A. Stone ◽  
Brian C. J. Moore
Keyword(s):  
Frequency Selectivity ◽  
Filter Model ◽  
Spectral Enhancement

Simple Triangular Approximations of Auditory Filter Shapes

1990 ◽  
Vol 33 (3) ◽  
pp. 530-539 ◽  
Author(s):  
C. Formby
Keyword(s):  
Sound Pressure ◽  
Frequency Selectivity ◽  
Complex Nature ◽  
Qualitative Properties ◽  
Shape Model ◽  
Filter Model ◽  
Auditory Filter ◽  
Simplified Method ◽  
Clinical Measurements ◽  
High Sound

At present, the most popular auditory filter shape model is one with a rounded peak and exponentially decaying filter skirts (Patterson & Moore, 1986). Unfortunately, the complex nature of this “roex” filter model may, in some instances, have hindered the application of the auditory filter shape in clinical measurements of frequency selectivity. Moreover, some of the assumptions of the roex filter model may be violated at high sound-pressure levels (SPLs) and this limitation has also been a factor when considering the roex auditory filter shape in the clinic. Our purpose is to introduce a simplified method that is adequate for obtaining clinically useful estimates of triangular-shaped auditory filters. Although the triangular-shaped filter model faces the same problems as the roex model at high SPLs, the calculations and assumptions underlying the former are far less complicated. The triangular filter model also retains many of the qualitative properties and advantages afforded by roex-fitted auditory filter shapes. In this report, we review the basic concepts underlying auditory filter shape estimates and describe our methods for measuring and fitting the triangular-shaped filter model. We then present normative triangular filter shapes and compare these estimates with auditory filter shapes fitted by other means. Finally, we present selected examples of triangular filter shapes fitted to the masked thresholds of hearing-impaired patients. For the most part, the triangular-shaped filter model offers the clinician a satisfactory compromise for obtaining estimates of auditory filter shape and frequency selectivity at moderately intense and high SPLs.

Pengurangan Kadar Minyak Pada Abon Ikan Produksi Savitri Dan Tiaras Dengan Penerapan Alat Peniris Serbaguna Di Kota Kupang

2018 ◽  
Vol 2 (2) ◽  
pp. 20
Author(s):  
Muntasir Muntasir ◽  
Pius Weraman
Keyword(s):  
Raw Material ◽  
Added Value ◽  
Filter Model ◽  
Simulation Tools ◽  
The Public ◽  
Fish Meat ◽  
Efficiency Increase ◽  
Main Components ◽  
Design And Manufacture

Community Partnership Program in small home industry of making fish floss brand "Savitri" and "Tiaras" inKupang city in the form of application of electric centrifugation filter model has been implemented. One of the problemsin the production of Savitri and Tiaras fish floss is that there is still a lot of oil in the frying product which is only drainedon a simple sieve and then placed for some time on traditional tools of filter and paper that can cause low quality and lowquality, so it is necessary to reduce the oil yield frying fish floss product. In order to increase the added value and sellingvalue of the products, it is necessary synergy between Universities and Partners in the form of application of the results ofscience and technology to the public. The main components of the composer of the versatile filter are the cylindrical plateas the bucket of the filter, the cylinder filter, the electric dynamo as the centrifuge system rotator and the load-bearingconstruction. The method of this program is the provision of materials, design and manufacture of tools, demonstrationtools and the provision of a versatile filter cylinder system centrifuge model by the team, simulation tools, specialcounseling at the location of partners and suggestions as a follow-up in the endurance of production. The output of thisprogram can provide added value in the form of the use of this tool can improve labor efficiency, increase productivitypartners by producing 40 kg to 50 kg raw material, raw fish marlin, fish meat after cleaning, processed, fried, in andpacked into 80-100 packs of fish floss with the price of Rp. 40,000.00 per package weighing 250 grams. With estimatedpartners will earn a profit of Rp 3,200,000 - 4,000,000.00 per production or 12,800,000.00 - 16,000,000.00 per month incash and consumptions, as well as the abundance of non-greasy, clean and hybrid fish products

Sign in / Sign up

Export Citation Format

Share Document