Digital Filter And Its Advantages and Disadvantages!

In quest to design a digital filter, it is important to follow a step by step guideline from specification to implementation. Each option of the design process is open for all designers. Most digital signals process experts apply some digital filter theory especially reflecting the considerable research effort, approximation for finding useful method of calculating filter coefficient.

What is digital filter?

It is a network or a accuracy system by which we can change the wave shape, amplitude, phase, frequency and other characteristics of the signal in a desired manner. The main objectives of using the filter in digital signal processing are to improve the signal quality by reducing noise, to extract or combine the desired portion of the signal. Basically in signal processing technology, it is an algorithm which is implemented in software and hardware to generate digital output signal from the input signal explicitly in a desired manner. It performs on a routine filtering algorithm representing some variables, numbers or digitized analog signals on specific hardware or software.

There are few steps in real time digital filter with analog input. First, band limiter limits the analog signal in order to periodic sample and convert into series of binary sample. Second, a processor is used to process these input sequences into output sequences with some types of computational mathematical algorithm. After that, the processed signal converters in analog signal reducing some unwanted components.

Advantages

  • It has linear phase response.
  • Thermal and environmental variation can not change the performance.
  • It is so-called adaptive filter because the frequency response can be possible to adjust automatically with implementation of programmable processor.
  • It is possible to filter several input sequences without any hardware replication.
  • All data can be stored
  • It has repeatable performance unit to unit.
  • Due to its operating level is at low frequency, it is used where the use of analog system is impractical.

Disadvantages

  • In reality, the signal bandwidth of the digital sequence is much lower than the analog sequence. Signal processing speed is one of the key factors of calculating the total device performance. Actually the speed operation totally depends on the number of the arithmetic operation in the processor.
  • Finite word-length effect, which results quantizing noise and round-off noise, is another major drawback during computation.
  • It needs much longer time to design and develop the digital sequences though it can be used on other tasks or applications once developed. Ordinarily good support of computer aided design can convert them into a pleasant tasks.



Source by Alamgir Mahmud

Why Personal Finance Software Is Important

Why personal finance software is important

These days, technology has really revolutionized people's way of life, including their financial life. Back in the day, most people used a pen and paper to document their earnings, spending, and finances.

What is personal finance software?

Home finance software returns to a financial tool that enables you to prepare a budget, track your expenses, and check your overall finances. These days, there is no valid reason why you should be disorganized and mired in debt because there are many good personal finance programs that you can use to keep track of your money, plan your future, and completely control your finances. If you have a PC or laptop, you are lucky because you can easily find good home finance software at little cost. Application programmers have now catered for the high demand for these applications as they now come with all sorts of functions and capabilities that can save your money, time and effort.

Analysis

You can now analyze your finances unaided. However, this kind of analysis can be much easier if you have some accounting background. Finance software will analyze your important financial details. Details such as your monthly expenses will stick out. Many personal finance applications also allow personalization. If there is one particular aspect you want to know about your finances, you can simply create a specialized analysis. Many personal finance programs can also give you a monthly analysis-an excellent way to see how you actually spend your money on a monthly basis.

Budget creation

We all know the importance of a personal budget. But creating a real budget that you'll stick to is easier said than done. You can find a personal finance application that creates a realistic budget for you. Simply enter your basic information into the software and quickly create a simple budget.

Checkbook balances and bill payments

Sometimes you'll fail to pay bills on time. When it happens, interest rates are more than likely to shoot up. Fortunately, you can avoid this mistake once and for all. Look for a personal finance application that'll remind you when to pay your bills. Likewise, you can accomplish balancing your checkbook by just ticking a box. Sum up any amounts withdrawn from your account and check carefully anything that looks suspicious. Once you have everything on record, it becomes much easier to know how your finances are faring.

Trust yourself and no one else

When it comes to finances, it is best to keep track of all you have carefully. You may trust your finances with your financial advisor, but it is still important to know where every cent is at, always. With a personal finance application, your money will never be far away from you. Whether you are paying bills, balancing your checkbook, tracking your paycheck, or creating a personal budget, you should not live without personal finance software.



Source by John C Watson