Category Archives: 3. Multimedia

Digital Audio Convertors DAC

I’m publishing this way back in September, I am having a guess at the date we will be covering this topic.

Description of features of sound cards, including:

  • role of DAC

The DAC converts a stream of digital bits into an analogue signal. This signal is then changed into a sound wave by an amplifier and speakers.

The human ear is a complicated thing and as I said in class your hearing is diminishing with age. So is there a difference between 16 and 24 bit? Well probability not for me but your young ears might find the difference quite noticeable.

Interlacing Bitmaps

Downloading large bitmap images from the Internet over a slow network connection can be frustrating, especially over a slow mobile connection. It might be that the image you are trying to view is not the correct one but you would have to wait for the full image to be displayed line by line before you are sure

However, with interlacing the image is downloaded by alternate lines. This results in a blurring then smoothing effect. Roughly the same amount of data is transmitted, just the order is changed.

Work for Tuesday 11th March

Today you are going to investigate the different types of bitmap graphics file we will use during the course.  You must create a presentation which covers Bitmap,GIF,JPEG & PNG file formats. You can use your notes, the scholar website and other websites including this one to do your research. A clear example of each file type must be included in the presentation, this should show some advantage or disadvantage of the image format. Please use the point below to help you in your investigation.

Description of the storage of graphic data in compressed and uncompressed file formats, including simple description of the techniques used within each file for compression and data storage, including:

  • bitmap (indexed colour or CLUT), 24-bit bitmap and compressed bitmap (RLE),
  • GIF (animation, (non)-interlaced, LZW),
  • JPEG (description of factors involved),
  • PNG (CLUT or RGB, transparency, compressed)

Introduction to Multimedia

So we got started on booklet 1. In this unit we will focus more on the technical aspects of multimedia.

Today we looked at the development process of multimedia and the key thing you should have taken away was this idea of target audiences. Any multimedia application must be focused on it’s target audience. A multimedia application for a primary school child will look far different than one created for a University student.

We then went on to HTML and how a WYSIWYG editor differs from a text editor.

Tomorrow you will be working with these notes.

Adobe Generation

I thought this was worth sharing with you but it is not endorsed or approved by the school and is not required to complete the course.

Important Notice

A trial or fully licensed membership to Adobe® Creative Cloud™ will be needed to partake in this course. If you currently don’t have a membership it is recommended that you consider downloading a 30-day free trial of the products needed for the course. It is advised that the 30-day free trial is downloaded as close to the course start date as possible.

What is Adobe Generation?

Adobe® Generation is a series of free online courses designed for young people with a passion for creativity! If you want to know how to create stunning images, amazing animations, captivating videos, cool games and fab app designs then these courses are perfect for you!

There are five courses to choose from including; Photo Imaging, Animation, Video, Game and App Design and these will take place consecutively, from November 2013 through to June 2014. You can learn more about the courses by clicking on the links in the banner above or icons below.

Each course is five sessions long, with one live, online session per week lasting 90 minutes. These sessions will take place on a Tuesday evening, starting at 7pm UK time. All the sessions are recorded and are made available to everyone who has registered for the course, so if you miss the live event you can watch again at a time that suits you.

Every week, a piece of work will be set to complete and should take approximately 3 hours of your time. Weekly prizes will be awarded for the best work submitted and you may even see your work displayed on this website. At the end of each completed course you will also receive an Adobe certificate.

You can sign-up to as many of the free courses as you like so why not register your details today!