23/05/11

Today Chelsea Brought in her still camera for our group to figure out if we are going to use this cmaera or not. Because for this assignment the camera or video cam that we need to use has to have a good battery life, The resolution of the camera needs to be good, should have good connectivity and the storage capacity should be fantastic. From what I heard from Chelsea the connectivity it is from a SD card.There isnt that much progress but next time we are going to finalize the storyboard.

Term 2 School Project 2011

My group members are Chelsea L Aishwarya V and Kate F. We have decided on making a video on life of a coin because of the different angles that we can get from where a coin goes and how people without thinking randomly pick up a coin from the floor. We were inspired from the TropFestival winner JR that made a video similar to that.

But at the moment we are having some problems about finalizing what we are going to do.

What Is Bandwidth

When you open a Web page or download a file, it travels very quickly from wherever it happens to be on the planet Earth to your ISP. It then travels from the ISP's computers to your computer. The actual speed at which information moves through a wire is always the same, no matter what your bandwidth might be. That is, electrons run through the wires at close to the speed of light, about  670,000,000 MPH (six hundred and seventy million miles per hour). At that speed, you could circle the globe 7 times a second, or 420 times a minute. So why does it take so long for every Web page you visit to appear on your screen? That's where bandwidth comes in.

In simple words Bandwidth is :

In computer networks, bandwidth is often used as a synonym for data transfer rate - the amount of data that can be carried from one point to another in a given time period (usually a second). This kind of bandwidth is usually expressed in bits (of data) per second (bps). Occasionally, it's expressed as bytes per second (Bps). A modem that works at 57,600 bps hastwice the bandwidth of a modem that works at 28,800 bps. In general, a link with a high bandwidth is one that may be able to carry enough information to sustain the succession of images in a video presentation.

notes for video

file type
connectivetiy
reslotuion
ease of asscesss
ease of use


PEople in my group:

Ash V
MEEEE
KAte F
Chelsea L


And our group is called hi im a unicorn

ringtone download

click here for ringtone

Term 2- Sampling Rate

Yes Term 2 already! Term 1 went so fast and i bet Term 2 is going to go faster. Today is Period 1 and what a better way to start the term then with IST first period. Yes todays Lesson Mr. Lennon told us stuff about sounds and Sampling. He told us about bits and how many bits make up a byte. At the moment I am confused about this, and not just me but my fellow classmates do not understand the physical component of this topic. Therefore Sir has given us some questions to complete. So our knowledge can vary and we might understand it. Before I complete the questions Sir told us to listen to some sounds ono wikipedia and this will show how bits can make a difference in the sound. Like in example:


HERE are the sounds listed from best to worst-

Firstly I tried the best sound and i realised that it was so clear and so good, I could here everything perfectly.
Then I heard the last sound, and realised that i couldnt understand what the person was saying because the sound quanlity was so poor. Even when i listened it at home it was so poor, and when i clicked on the link it took me to the windows media player, you may know that whenever you play something on widows media player, when it hears sound colourful lines spread the page , telling us the wave length.So when I put it the good quanlity one the waves were so clear and nicely curved, but when i pressed the poor one, its waves were really blury and not curved at all.



Questions:

1. Sound moves through what medium?

We hear sounds because our ears are sensitive to these pressure waves.

2.   What unit is used to measure 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. Therefore it is measured in bits.

3.  What unit is used to measure sampling rate?

The rate at which the samples are captured or played back, measured in Hertz (Hz)

4.  Compare the quality of AM, FM and Digital radio.
AM:
Sending pure digital data through the approximately 20 kilohertz AM channel is roughly equivalent to sending data through two 33 kbit/s analog telephone lines, thus limiting the maximum throughput possible
FM:
The FM hybrid digital/analog mode offers four options which can carry approximately 100, 112, 125, or 150 kbit/s of lossy data depending upon the station manager's power budget and/or desired range of signal. The HD Radio also provides several pure digital modes with up to 300 kbit/s bitrate, and enabling extra features like surround sound. Like AM, pure digital FM provides a "fallback" condition where it reverts to a more-robust 25 kbit/s signal.
DIGITAL RADIO:
 Today the most common meaning is digital radio broadcasting technologies, such as the digital audio broadcasting (DAB) system, also known as Eureka 147. In these systems, the analog audio signal is digitized into zeros and ones, compressed using formats such as mp2, and transmitted using a digital modulation scheme. The aim is to increase the number of radio programs in a given spectrum, to improve the audio quality, to eliminate fading problems in mobile environments, to allow additional datacasting services, and to decrease the transmission power or the number of transmitters required to cover a region. However, analog radio programs and equipment, especially for the FM broadcasting system, still dominate the market.

Steps For Using Movie Maker ( how to organise ur selve for using movie maker)

How to organise your project:

1. Create Folder-for project(location-S drive , never have only copy on memory stick)
2. Place in folder-video files, music,still images.
3. Open Movie Maker, Import Resources/ cannnot import from network location  like S drive/ Therefore suggested copy of S Drive Folder to Desktop each Lesson
4. Saving / project file - remember last location of resources - WORK IN PROGRESS/ movie file- all resources embedded in ONE file COMPLETED WORK
5." SYNCHRONISE AT END OF EACH LESSON"

Audacity

This Term we are first starting off with exploring audacity. Mr Lennon explained the basic tools to us and told us to explore with the program. Mr Lennon showed us how to record our voice using microphones and also how to lower the volume when talking.


Here is more about the tools

Audacity Is based around six basic tools, which are located in 2 rows to the left of the play buttons.

Selection Tool:

This is used to highlite audio selections using by clicking and dragging across the audio wave form. The grayed area you selected is now ready to receive any number of editing tools or effects applied to the highlighted sample. After selecting a portion of the waveform, you can click the Play button to play just the selected portion of the audio. You can deselect by clicking once inside your audio track.





Envelope Tool:

The Envelope tool is used to increase and decrease volume levels at various locations in your wave form. It is non-destructive which means that it will not effect the original audio file. Envelopes are useful for fading music into the background and for editing interviews or recording with two voices where one might be louder than the other. To use the Envelope tool, create envelope "handle" points around the portions of the wave form where you want to raise or lower the volume level. After turning the Envelope tool on, blue borders will surround your audio sample. When you click on any point on the blue line to add a handle (a square white point). You can widen the blue border to increase the volume between those points; narrow the blue border to decrease the volume.

Draw Tool:

To use this tool you will have to zoom in closely until you can see all the individual samples like this:

Then you will have to click on the drawing tool and click one of the dots, as soon as you click on it you will see that the dots moved into a different direction. Just like the Besizer tool in Inkscape.

Zoom Tool:

Timeshift Tool:

This Timeshift tool is a good way to cut and past or move an entire track. After selecting the Timeshift tool you can select a track and click on the wave form and drag it left or right to move it earlier or later in the timeline.



Multitool:

The Multi-tool button lets you perform multiple editing actions with your mouse. It's like having all of the editing tools turned on at once. With the multi-tool selected you can adjust volumes up and down by adding envelope handles and you can select portions of the audio with the I-beam selection cursor. You can also zoom in on your selection by right clicking and dragging to select the sample you wish to see.

The Zoom tool in indicated by the magnifying glass. You can use it to zoom in and out on specific parts of your wave form. Left click once to zoom in on a selection, or right click to zoom out. To zoom in on a specific portion of your wave form, left click and drag across a portion of your audio file. The section you've selected will no completely fill the window.