What is Broadband? part 2

Australian Bureau of Statistics

A] How many people subscribed to the internet in 2009? How many of these were for business use? How many for home use?

Total subscribers: 8 951 000

Business use: 1 629 000

Household use: 7 322 000

B] Look at the access technologies heading. How many more people are using broadband since 2009? Remember that you have to add 000 to the numbers.

December 2009:

DSL: 4 178 000

Fibre: 11 000

December 2010:

DSL: 4 458 000

Fibre: 24 000

Check internet speed

1. What is the speed of the connection from your computer to the Sydney location on the map?

0.14 Mbps

2. Why did the data transfer rates vary? [Hint: think of what happens when an eight lane highway moves into a two lane highway?]

The data transfer rates vary because there is so much information trying to be transferred. But only a limited amount of room to do it in. At times it may be fast because there is nothing else that is being transferred, while other times it can take a long time because there are many things being transfer at the one time.  

 

What is broadband? part 1

     1.    What is broadband?

      Broadband can be classified as an internet connection that is faster than dial up. 

2. What units are used to measure bandwidth?

Bandwidth can be measured using:

·         bits (b or bit)

·         Kilobits (kb)

·         Megabits (Mb) 

·         Gigabytes (GB)

·         Megabytes (MB)

·         Megabytes per second (MBps)

·         Megabits ber second (Mbps)

·         Kilobits per second (kbs) 

( a ‘byte’ is much bigger than a ‘bit’ e.g. megabyte and megabit   



      4. What are the speeds that broadband operates at compared to dial up?

      Dial up has a data transfer rate of 56 kbs while broadband has a data transfer rate of 256 kbs.

      3. How much faster is broadband than dial?

      Broadband is 200 kbs faster than dial up. This shows that broadband is in fact the faster option.

      5. What are some of the advantages of using a broadband connection to download something like a video compared to dial up?

      Broadband connection will download the video much faster than a dial up connection. Using a dial up connection could take hours, even a whole day while broadband will download the video at a much quicker speed.

      6. Create an image in paint that illustrates how a high bandwidth connection can move more data compared to a dial up connection at a given time.

Sound Waves Post

This is my first post on sound waves (:

Question 1 - Sound movies through what medium?

 
















Sound travels in mechanical waves. A mechanical wave is a disturbance that moves and transports energy from one place to another through a medium. In sound, the disturbance is a vibrating object. And the medium can be any series of interconnected and interactive particles. This means that sound can travel through gases, liquids and solids.

Question 2- What unit is used to measure sample size?
Sample format or sample size: Essentially this is the number of digits in the digital representation of each sample. Think of the sample rate as the horizontal precision of the digital waveform, and the sample format as the vertical precision. An audio CD has a precision of 16 bits, which corresponds to about 5 decimal digits.Question 3- what unit is used to measure sample rate?Sample rate: The rate at which the samples are captured or played back, measured in Hertz (Hz), or samples per second. An audio CD has a sample rate of 44,100 Hz, often written as 44 KHz for short. This is also the default sample rate that Audacity uses, because audio CDs are so prevalent.

Question4- Compare the quality of AM, FM and Digital radio.

AM (amplitude modulation) When the carrier wave is changed by its amplitude. The operating frequency is expressed in kilohertz (kHz).

FM (frequency modulation) When the carrier wave is changed by the frequency or varied dependent on the amplitude. The operating frequency is expressed in megahertz (MHz).

Digital TransmittingDigital radio is the next generation of radio. It is a revolutionary audio broadcasting technology, which dramatically improves sound quality, and will enable you to receive value added radio services for free.

By using the information gathered you can see that digital radio has the best quality, but i haven’t heard digital radio.....so in my opinion FM radio has the best quality based in what I’ve heard.

Discussion Lesson for Ideas for Assigment

today we made our groups form our movie. in my group is Kayeleanne,  Jessica and Tanisha  (:

We brainstormed various ideas which were:

• Lost in the Jungle - JB style ;)
• Adopted Siblings
• Gothic-Vampires/fantasy (:
• Some inspirational movie
• Comedy- How to nag your parents
• How to survive high school
• Documentary- Under the Sea (:
• Cliche- Romance (need guy!)
• Typical Supernatural/ Superhero
• Abduction- aliens, supernatural, vampires
• Pranks on Friends
• How to videos
• Parodies of classics
• Making fun of the Royal Wedding