please help me find an abstract for four tone siren and it description

please give me about abstract of four tone siren ..i have to submit this project today so help me

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four tone siren

Operation of four siren sound generator circuit using UM3561, IC1 number ready to create a sound all four sound at pin 7, 8 of IC1 to the R1, VR1 to take to control the frequency of oscillator circuit the internal IC. If the VR1 adjust less frequently and will increase, if VR1 adjusts the frequency that would cost a lot less. When the power supply is integrated into the police car sirens sound out.If the switch S1 will press space, press switch S2 sound gun will fire if the sirens sound, press switch S3 ambulance sirens will s ....etc

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Final Report on
Dual-Tone Multiple Frequency (DTMF) Detector Implementation
Presented By:
Giiner Arslan
for EE382C Embedded Software Systems
Abstract
Dual-tone Multi-frequency (DTMF) signals are used in touch-tone telephones as well as many other areas such as interactive control, telephone banking, and pager system. As analog telephone lines are converted to digital, researchers became interested in digital DTMF detectors.
There are many digital DTMF detecting algorithms, but most of them do not comply with ....etc

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source code matlab for tone reservation

Abstract

OFDM system has an disadvantage in the sense of PAPR problem for the transmitter. In this contribution, we propose the new PAPR reduction scheme, Tone Reservation method, and show the performance results.This document has been prepared to assist IEE 802.16. It is offered as a basis for discussion and is not binding on the contributing individual(s) or organization(s). The material in this document is subject to change in form and content after further study. The contributor(s) reserve(s) the ri ....etc

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ADOBE DREAMWEAVER CS4 TUTORIAL


Before you get started, it is important that you have a space to upload your Web site
When it is completed. BGSU offers 15 MB of free personal Web space for each
student, so you can use this space to upload your project.
To activate your personal Web space, follow these steps:
1. Log onto your MyBGSU Account.
2. Scroll to the bottom of the page to find the My Computer Accounts box (Fig. 1).
3. Click the Add Server Account button.
4. In BGSU Server Acc ....etc

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To get full information or details of skin tone based data hiding please have a look on the pages

http://seminarsprojects.net/Thread-skin-tone-based-secret-data-hiding-in-images

if you again feel trouble on skin tone based data hiding please reply in that page and ask specific fields in skin tone based data hiding ....etc

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Photoshop 7.0
What is Adobe Photoshop 7.0?
Photoshop, now up to version 7.0, is the leading professional image-editing program, released by Adobe. Photoshop is useful for both creating and editing images to be used in print or online. Easy to use, but full of high-quality features, Photoshop is the best choice for any image manipulation job. ....etc

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Abstract:
The natural world presents our visual system with a wide range of colours and intensities. A starlit night has an average luminance level of around 10-3 candelas/m2, and daylight scenes are close to 105 cd/m2.
Humans can see detail in regions that vary by 1:104 at any given adaptation level, over which the eye gets swamped by stray light (i.e., disability glare) and details are lost. Modern camera lenses, even with their clean-room construction and coated optics, cannot rival human vision when it comes to low f ....etc

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advantages of multi tone siren

A siren is a loud noise making device. Civil defense sirens are mounted in fixed locations and used to warn of natural disasters or attacks. Sirens are used on emergency service vehicles such as ambulances, police cars and fire trucks. There are two general types: pneumatic and electronic.

Many fire sirens (used for calling the volunteer fire fighters) serve double duty as tornado or civil defense sirens, alerting an entire community of impending danger. Most fire sirens are either mounted on the roof of a fire ....etc

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i need this project description, working principle, circuit diagram and ppt ....etc

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