A digital mixer enables one to change live vocal samples, add in previously recorded music or vocals and apply different effects and improvements. The advantage of a digital mixer is that one can do all of this simply, retain different versions along the way and produce a good quality output.
As we know numerical relays use DIGITAL SIGNAL PROCESSOR as its computational hardware and based on microprocessor. WORKING: Analog input is feed into the anti aliasing filter which is a low pass filter.Output of this filter is feed into the sample and hold circuit , frequency of sampling should be twice of our highest frequency of interest(according to the nyquist criterion).if sampling frequency kept low than aliasing input may occur. after the sampling, signal are feed into the multiplexer,where all the signal get multiplexed and we have a single signal.this signal is feed into the analog to digital converter.this digital signal is feed into the microprocessor and microprocessor generates control signal according to its input. for example if you are using N.R. for over-current protection than you should set a value of current in your program.if the value of current passes through the circuit is greater than the set value..than N.R. enables the circuit breaker and hence our system is protected..
Digital data requires less bandwidth than analog data (e.g. new digital television broadcast compared to old analog broadcast), so more data can fit in the same frequency (e.g. DSL compared to analog modems). This is the primary advantage, although it is also generally stated that data is easier to recover and more tolerant towards interference.
kinds of electrical relays
Digital Electronics deals with logic 1 and logic 0, where logic 1 is represented by one voltage and logic is represented by another voltage.(ie. it is a discrete representaiton of analog signals). The main advantage of digital signals over analog signal is that it is less prone to noise.
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They are easier to read.
The main advantage of digital surveillance is that you can easily see what is happening wherever you are. This means that you can keep an eye on your home when you are at work and vice versa.
The advantage of digital cable is that you receive better picture quality and additional channels than regular cable
A digital clock can be looked at and the time will be known immediately. You do not need to know how to tell time with a digital clock.
The first advantage of digital keyboards is that they are much more easily transported. Also the price of a digital keyboard is substantially lower than getting an authentic piano.Another advantage is that less space is required for a digital keyboard and a digital keyboard can also be connected to a computer for analysis, and more.
New, faster, lighter, better, and cheaper.
The advantage of grapevine communication is that it relays information fast. The disadvantage is that the information is usually unverified.
DIGSI stands for "DIGital Synchronous Interface," which is a software used in protection relay devices for configuring and parameterizing the relays.
Digital is always preferred over analog for the following reasonsAccuracyImmune to noiseEasy error detection and correctionThe same is true for digital signal processing too.
Numerical relays are all microprocessor based, but there are relays that take the advantage of microprocessor technology and are not fully numerical. In other words, if a relay is fully based on processing the samples of input signals it is numerical relay.
The accuracy is the biggest advantage.