My ringtone

This is my ringtone. I used the song Decode by Paramore. I edited it on Audacity to speed up the tempo and to make the sound fade out. It took me a while cause I kept forgetting my earphones but I finally remembered so thats why I have finally finished the ringtone and it is on my blog.

New Vocab Words

Here are a few new vocab words from IST that we have to know
Stereo - Stereo is when feeding 2 or more seperate microphones to 2 or more loudspeakers through different channels.


Track- A musical composition that have vocal parts that are sung usually accompanied by musical instruments.


Channel- A channel is a seperate path in which signals can flow. This is used in Telecommunications in general.

Frequency- It describes the number of waves that are passed through a fixed place in any given amount of time.

Hertz- It is a unit of frequency of one cycle per second. It replaces the term cycle per second.

Decibel- Decibel is used to measure the sound level. It is also widely used in electronics, signals and communication.

Wav- A WAV file is a standard audio format for storing music, sound bits and other items onto your computer.

Mp3- This is a standard format for compressing a sound sequence into a very small file. It does this while still keeping the original level of sound quality.

AIFF- It stands for Audio Interchange File Format. It is used to store and transmit high quailty audio data like music.

Introduction to Video Notes!!!

Q1] The video format we will be using this term is Digital Video, what is the other, older format that was used recently?

The older format that was recently used is Analog Video

Q2] Describe the difference between the two formats.

The difference between Digital and Analog Video is:

Analog signals are made up of constantly changing waveforms. The value of the signal at any time can be any where in between the range of the allowed max.and min. Digital on the other hand are only transmitted at precise points chosen at intervals on the curve. The max. value represents 0 and the min. value represents 1.

Q3] What are some of the advantages of Digital Video? The advantages of Digital Video are:

-There is a very accurate transmission compared to analog. There is no way for an analog signal at the receiveing end to distinguish between the original signal and any noise that may have been made during the transmission.

-With Digital Signals, it is alot easier to find the original info from the noise. With Analog each repeated transmission there is more noise collected. As a result there is poor accuracy that can attribute to a general loss.

-It is also a lot easier to duplicate or copy info. The more info you copy the more noise occurs on top of it if you use Analog Signals. If you use Digital Signals there is less noise.

Q4] What is meant by frame rate?

Frame rate is the number of pictures shown per second on a film or a video. For us to see a smooth motion, there has to be a frame rate of 10 frames per second.

Q5] Do all applications use the same frame rate?

No not all applications have the same frame rate. The movies we see played in the cinema are filmed and projected at a frame rate of 24 frames per second. The movies that are ahown on T.V are projected at a frame rate of about 30 frames per second.

Q6] What is meant by Resolution, how is it measured?

The resolution of the image is the amount of info in each frame. The resolution is normally represented by the number of individual pixels that are on the screen, and is expressed as a number of vertical pixels times by the number of horizontal pixels.

Q7] What is the colour system called RGB?

The RGB colour system stands for the Red, Green and Blue components of a colour. The computer displays the colour system RGB. Each and every pixel we see is actually light coming from a red, green and blue phosphor put very close together. Once they are close together, our eyes blend the primary light colours so that we see a coloured dot.

Q8] Explain the video standards PAL, NTSC and SECAM, what are the main differences between?

We use 3 television standards in the world. They are PAL, NTSC and SECAM. We don't have to worry about these standards because the cameras, T.Vs and video peripherals that you buy in the country that you live in will conform to the standards of that country.

The NTSC format is used in USA, Canada, Japan, Korea and Mexico. There are 525 horizontal lines and the frame rate is 29.97 frames per second.

The PAL format is used in Australia, China, Most of Europe and South America. There are 625 horizontal lines and the frame rate is 25 frames per second.

The SECAM format is used in France, Middle East and Most of Africa. There are 625 horizontal lines and the frame rate is 25 frames per second.

Q9] Which Standard do we use in Australia?

In Australia we use the PAL standard.

Q10] For what type of video camera would you need to have a Video Capture Card in your computer to download video?

The type of video camera that needs a Video Capture Card in your computer to download video is the traditional analog camcorders.

Q11] Why don't we need a video capture card for the video we will be doing at school?

We don't need a video capture card for the video we will be doing at school because we don't use analog camcorders but digital cameras.

Q12] What is IEEE 1394 port?

This is a port in which you connect an IEEE 1394 connector to a digital video camera to a computer's IEEE 1394 port.

Q13] Why do digital Video cameras use video compression?

Digital video cameras use video compression because there are large amounts of data in an umcompressed video.

Q14] Describe what codec is.

Codec is what decompresses videos and compresses them.

Q15] What is meant by generation loss, where does it happen?

Generation loss is when you duplicate something but it is not as good as the original . It happens with both digital and analog video types but more often with Analog.