Analysis and Implementation of Hybrid FIR Architecture in Speech Processor

Hearing aid is an electronic gadget precisely used into the internal ear which reestablishes halfway hearing to smooth hearing. The discourse processor of CI parts the sound-related sign into groups of various frequencies and changes over them into appropriate codes for animating the cathodes in cochlea of ear. The cathode actuates sound-related nerve filaments to give hearing sensation. The expense of the CI alone goes to around 100,000 US dollars. For the efficient less well-to-do individuals with hearing sickness, it might be too exorbitant to even consider affording for this hardware to recoup from the conference misfortune. It gets important to cut down the expense. The cost decrease might be accomplished with diminished region, low force and rapid activity of the CI. This goal intuited both the simple and the computerized based CI originators to inquire about their techniques to give individuals less expensive and profoundly understandable CI. The primary objective of this paper is to develop reconfigurable DSP architectures for the filter banks in speech processor of CI with the following features like minimized area of the filter, reduced power consumption of the speech processor and enhanced presentation of the filter. This paper involves the design and hardware implementation of narrow band pass FIR filter for speech processor of CI using the Xilinx System Generator (XSG) tool on Virtex 7 FPGA.

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Design of Power Meter Reading Circuit Based on CC2430 and RS485 Bus

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.608-609.494 ◽

2014 ◽

Vol 608-609 ◽

pp. 494-498

Author(s):

Xi You Liu ◽

Hong Ying Wang

Keyword(s):

Power Consumption ◽

Data Transmission ◽

Communication System ◽

Hardware Implementation ◽

Data Communication ◽

System Model ◽

Single Chip ◽

Power Meter ◽

Reading System ◽

Reduced Power Consumption

The article analyze current situation of the electric meter reading system, and given circuit of the remote automatic meter reading based on single-chip system model, and introduced in detail the key part of data acquisition, data concentrator and the monitoring center software, hardware implementation. The wiring complexity of the project has been reduced by using the technology of RS485 communication for data transmission, which has been improved the reliability of data communication system, and reduced power consumption. The results show that the terminal is normal and reliable.

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Faculty Opinions recommendation of [Analysis of the cost effectiveness of home-based phototherapy with narrow-band UV-B radiation compared with biological drugs for the treatment of moderate to severe psoriasis].

Faculty Opinions – Post-Publication Peer Review of the Biomedical Literature ◽

10.3410/f.726595147.791053052 ◽

2012 ◽

Author(s):

Robert Dawe

Keyword(s):

Cost Effectiveness ◽

Narrow Band ◽

Severe Psoriasis ◽

Biological Drugs ◽

Home Based ◽

The Cost

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CFD Simulation of a Hyperloop Capsule Inside a Low-Pressure Environment Using an Aerodynamic Compressor as Propulsion and Drag Reduction Method

Applied Sciences ◽

10.3390/app11093934 ◽

2021 ◽

Vol 11 (9) ◽

pp. 3934

Author(s):

Federico Lluesma-Rodríguez ◽

Temoatzin González ◽

Sergio Hoyas

Keyword(s):

Shock Waves ◽

Power Consumption ◽

High Speed ◽

Cfd Simulation ◽

Aerodynamic Drag ◽

Flow Behavior ◽

Critical Conditions ◽

Vehicle Speed ◽

Blockage Ratio ◽

The Cost

One of the most restrictive conditions in ground transportation at high speeds is aerodynamic drag. This is even more problematic when running inside a tunnel, where compressible phenomena such as wave propagation, shock waves, or flow blocking can happen. Considering Evacuated-Tube Trains (ETTs) or hyperloops, these effects appear during the whole route, as they always operate in a closed environment. Then, one of the concerns is the size of the tunnel, as it directly affects the cost of the infrastructure. When the tube size decreases with a constant section of the vehicle, the power consumption increases exponentially, as the Kantrowitz limit is surpassed. This can be mitigated when adding a compressor to the vehicle as a means of propulsion. The turbomachinery increases the pressure of part of the air faced by the vehicle, thus delaying the critical conditions on surrounding flow. With tunnels using a blockage ratio of 0.5 or higher, the reported reduction in the power consumption is 70%. Additionally, the induced pressure in front of the capsule became a negligible effect. The analysis of the flow shows that the compressor can remove the shock waves downstream and thus allows operation above the Kantrowitz limit. Actually, for a vehicle speed of 700 km/h, the case without a compressor reaches critical conditions at a blockage ratio of 0.18, which is a tunnel even smaller than those used for High-Speed Rails (0.23). When aerodynamic propulsion is used, sonic Mach numbers are reached above a blockage ratio of 0.5. A direct effect is that cases with turbomachinery can operate in tunnels with blockage ratios even 2.8 times higher than the non-compressor cases, enabling a considerable reduction in the size of the tunnel without affecting the performance. This work, after conducting bibliographic research, presents the geometry, mesh, and setup. Later, results for the flow without compressor are shown. Finally, it is discussed how the addition of the compressor improves the flow behavior and power consumption of the case.

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