Open In App

Difference between PCM and DPCM

Last Updated : 12 Oct, 2022
Improve
Improve
Like Article
Like
Save
Share
Report

Pulse Code Modulation (PCM): 
PCM is the technique used for remodeling analog signal into digital signal. Pulse Code Modulation has good signal to noise ratio. For transmission channel, Pulse Code Modulation needs high bandwidth than DPCM. 

The PCM method is split into 3 components, initial is that the transmission at the supply finish, second regeneration at the transmission path and also the receiving finish. 

These steps are given below through figure: 

 

Differential Pulse Code Modulation (DPCM): 
DPCM is same as the PCM technique used for remodeling analog signal into digital signal. DPCM has moderate signal to noise ratio. 

DPCM differs from PCM as a result of it quantizes the distinction of the particular sample and expected price. that’s the explanation it’s referred to as differential PCM. 

The operations at DPCM transmitter and DPCM receiver are given below through figure: 

 

Let’s see the difference between PCM and DPCM, which are given below: 

 

S.NO PCM DPCM
1. PCM stands for Pulse Code Modulation. While DPCM stands for Differential Pulse Code Modulation.
2. In PCM, feedback is not provided. While in DPCM, feedback is provided.
3. It has good signal to noise ratio. While it has moderate signal to noise ratio.
4. It is less efficient than DPCM. While it is more efficient than PCM.
5. For transmission channel, PCM needs high bandwidth(B). Whereas DPCM needs less bandwidth(B) than PCM.
6. PCM is complex than DPCM in terms of complexity. While DPCM is simple in terms of complexity.
7. In PCM, seven bits are transmitted per eight sample. In DPCM, four bits are transmitted per six sample.
8. In PCM, for transmitting bits rate varies from fifty five to sixty four. While in DPCM, for transmitting bits rate varies from thirty two to forty eight.

 


Similar Reads

Difference between Delta Modulation (DM) and Differential Pulse Code Modulation (DPCM)
Delta Modulation (DM): Delta modulation is associated with analog-to-digital and digital-to-analog signal conversion techniques. Delta modulation is utilized to appreciate high signal-to-noise magnitude relation. It uses one-bit PCM code to appreciate the digital transmission of the analog signal. With delta modulation, rather than transmitting a c
2 min read
Difference between Pulse Code Modulation (PCM) and Delta Modulation (DM)
PCM stands for Pulse Code Modulation and DM stands for Delta Modulation. PCM is basically used for reworking analog to digital signals and DM is a conversion technique between analog and digital signals. In this article, we will discuss these two topics and also see the differences between these PCM and DM. Pulse Code Modulation (PCM)Pulse Code Mod
3 min read
Difference between Difference Engine and Analytical Engine
Introduction: The development of computing technology has a rich history, with many inventions and innovations leading to the creation of the modern computer. Two such machines, the Difference Engine and Analytical Engine, were created by the English mathematician and inventor Charles Babbage in the 19th century. While these machines share some sim
7 min read
Difference between Voltage Drop and Potential Difference
Voltage Drop is defined as the decrease in the electric potential along the path of current that is flowing in an electric circuit. Voltage drop can be assigned at each point in the electric circuit that is proportional to the electrical elevation. The amount of energy delivered per second to any component in the circuit is equal to the voltage dro
4 min read
Difference Between Electric Potential and Potential Difference
The flow of electric charges is known as electricity, and it is responsible for producing electric current. An important word associated with electricity is electric potential. A potential difference is required to create the flow of electrons and hence, produce electricity. Before understanding the difference between electric potential and potenti
7 min read
Difference and Similarities between PHP and C
PHP is a server-side scripting language designed specifically for web development. It can be easily embedded in HTML files and HTML codes can also be written in a PHP file. The thing that differentiates PHP from a client-side language like HTML is, PHP codes are executed on the server whereas HTML codes are directly rendered on the browser. C is a
3 min read
Difference Between AND Gate and OR Gate
A logic gate is a simple switching circuit that determines whether an input pulse can pass through to the output in digital circuits. The building blocks of a digital circuit are logic gates, which execute numerous logical operations that are required by any digital circuit. These can take two or more inputs but produce only one output. The mix of
3 min read
Difference between Stop and Wait protocol and Sliding Window protocol
Introduction: Both Stop and Wait protocol and Sliding Window protocol are the techniques to the solution of flow control handling. The main difference between Stop-and-wait protocol and Sliding window protocol is that in Stop-and-Wait Protocol, the sender sends one frame and wait for acknowledgement from the receiver whereas in sliding window proto
4 min read
Similarities and Difference between Java and C++
Nowadays Java and C++ programming languages are vastly used in competitive coding. Due to some awesome features, these two programming languages are widely used in industries as well as comepetitive programming . C++ is a widely popular language among coders for its efficiency, high speed, and dynamic memory utilization. Java is widely used in the
6 min read
Difference between Time Tracking and Time and Attendance Software
Time tracking and time and attendance software are tools that help businesses track the time that employees spend on tasks and their attendance records. These tools can help businesses automate their time tracking processes, reduce errors and inaccuracies, and ensure that employees are paid accurately for the time they work. Time tracking software
4 min read