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Section III - MULTIMEDIA - HSN forum

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Section III - MULTIMEDIA


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#1 little_minx

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Posted 22 May 2004 - 07:33 PM

Hey Guys!

I know it's apparently "one of the least popular options" for Section III of the Computing Higher, but I do it, and I know a few other people on here do it as well. If you want to share any thoughts, problems or any trouble you have with questoins, post them here and I'll certainly try and help - I'm sure others wil as well.

Laura xxx

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#2 werlop

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Posted 23 May 2004 - 10:56 PM

My school teach multimedia, but I refused to do it and instead did networking, so I can't really be of any help.
Click here to visit the Bearsden Academy Website
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If you can keep your head when all about you
Are losing theirs and blaming it on you,
If you can trust yourself when all men doubt you
But make allowance for their doubting too,
If you can wait and not be tired by waiting,
Or being lied about, don't deal in lies,
Or being hated, don't give way to hating,
And yet don't look too good, nor talk too wise:
Yours is the Earth and everything that's in it,
And--which is more--you'll be a Man, my son!

#3 Discogirl17

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Posted 23 May 2004 - 10:57 PM

I did Multimedia. I can help you but I don't need much help myself sorry! I'm quite good at computing!
Half ideas,half quality, half a million pound law suit!

#4 $impl_ih

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Posted 24 May 2004 - 08:56 AM

Hey maybe u can help me.
What are 3 functions of a sound card? blink.gif

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`..`._. $ m p l y _ h `..`._.


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#5 little_minx

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Posted 24 May 2004 - 11:52 AM

There are more than 3, but here's the 4 that I've been taught.


1. Conversion
2. Compression
3. Playback
4. Interfacing




1. Sounds are analogue data and since a computer is a digital device, sounds must be converted to digital by the ADC in the sound card. This process is known as sampling.

2. Sounds can be fairly large files so they are compressed before being stored. Not all the sound formats support compression but .mp3 is by far the most popular.

3. The sound card handles playback of converted and compressed data to release the processor so it can carry on with other pending tasks.

4. The sound card is used as an interface when connecting peripherals such as a microphone, speakers or MIDI equipment.


Hope this helps - If you've anymore questions just ask

Laura xxx

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#6 $impl_ih

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Posted 24 May 2004 - 02:23 PM

Hmm Whats the difference between lossy and lossless compression?
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#7 little_minx

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Posted 24 May 2004 - 02:32 PM

Lossy compression involves losing some of the data to reduce the size of the file. Data that will not be missed by the human eye is discarded as its presence (or lack of) cannot be detected.

ADV--->Results in much smaller file sizes
DISADV--->Quality tends to be quite poor


Lossless compression reduces file sizes by only saving data which changes. For example, in a cartoon clip where a character is walking along a road: Only the frames where objects appear or diappear are saved. Techniques such as Huffman encoding are used to achieve this.

ADV--->High quality compressed files
DISADV--->Larger file sizes than files compressed using lossy compression.


Hope that helps

Laura xxx

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#8 $impl_ih

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Posted 25 May 2004 - 10:55 AM

What about some functions of a sound card?
`..`._. $ m p l y _ h `..`._.


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#9 little_minx

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Posted 25 May 2004 - 11:02 AM

QUOTE ($impl¥_®i¢h @ May 25 2004, 10:55 AM)
What about some functions of a sound card?

I gave you functions of a sound card already. Do you mean video card?

Laura xxx

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#10 james1

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Posted 25 May 2004 - 11:03 AM

Last years paper was supposed to be more difficult than 2002. I found it the same.

#11 $impl_ih

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Posted 25 May 2004 - 11:07 AM

QUOTE (little_minx @ May 25 2004, 12:02 PM)
QUOTE ($impl¥_®i¢h @ May 25 2004, 10:55 AM)
What about some functions of a sound card?

I gave you functions of a sound card already. Do you mean video card?

Laura xxx

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Lol thats what i meant a video card!
I was to busy reading ur reply.

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`..`._. $ m p l y _ h `..`._.


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#12 Shaun

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Posted 25 May 2004 - 08:36 PM

Hey. In out school our teacher decided to teach Multimedia Technology for the first time (Networking was usually taught). It's pretty good and I find it relies somewhat on Unit 2.

Shaun.

#13 Might_BE

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Posted 27 May 2004 - 10:12 PM

Hi i am tring 2 rediscover my knowledge of the Multimedia section as i have been concentrating really hard on my advanced higher in maths and physics. If any1 could help then could they please tell me about the "books" used as standards!?!?

Thanx Alot
xx

#14 kevvy_kevvy_vocab

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Posted 27 May 2004 - 10:20 PM

QUOTE (Might_BE @ May 27 2004, 10:12 PM)
Hi i am tring 2 rediscover my knowledge of the Multimedia section as i have been concentrating really hard on my advanced higher in maths and physics. If any1 could help then could they please tell me about the "books" used as standards!?!?

Thanx Alot
xx

i suppose it might....

well i hope i can help but if you're meaning the books i have been taught then this is what you're after:

dvd = the famous five
cd audio = winnie the pooh
cd video = harry potter and the philosophers stone
cd data = (my personal favourite) bridget jones' diary

well thats how my schools been taught to learn them so i hope that helps.

kev xxx ph34r.gif

#15 kevvy_kevvy_vocab

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Posted 27 May 2004 - 10:37 PM

mister might_BE. Seeing as one helped your sorry behind out, i would ask of u a favour in return.

in the advance higher physics course, how do you go about tackling the calculations involved in unit 3 of the course? if too hard then i understand as chances are, my brain is far superior to yours.

i thank you for taking the time to read this post. i hope you enjoyed it.

one love (for the mothers pride)

#16 Might_BE

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Posted 27 May 2004 - 10:43 PM

well kevvy i hav nailed tht bit of the course! i wasnt troubled at al 2bh! i thought tht it was fairly straightforward. here is a typical example!

When a liquid changes into a gas, the spacing between the particles increases by a factor of about ten. As such, because the volume of a substance is length × breadth × height, the volume will increase by a factor of 1000.

As a result, the density of a substance decreases by a factor of approximately 1000 when it changes from a liquid to a gas.


Question 1
A block of copper has a volume of 0.0005 m3. The density of copper is 8.96 × 103 kg -3.

Calculate the mass of the copper block.

The Answer


=8.96x 103 kg m-3
v = m3


m = v

m = 8.96 × 103 × 0.0005

m = 4.48kg

The mass of the copper block is 4.48 kg.


as u can c this is very straightforward but i av 2 WARN it duz get hard!

many complex sums such as the square root of pie to the negative1 cos 13.31 83.23degrees.

has this helpd!
dont hesitate 2 get bak 2 me!

#17 Discogirl17

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Posted 27 May 2004 - 11:13 PM

The books used as standards thats easy.
Red book- CD Audio
Yellow Book- CD Rom
Green Book- CD-I (Gaming)
Orange book- CD-R
Blue Book- laser disc (now extinct)
Half ideas,half quality, half a million pound law suit!

#18 little_minx

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Posted 28 May 2004 - 04:56 PM

QUOTE(Discogirl17 @ May 28 2004, 12:13 AM)
The books used as standards thats easy.
Red book- CD Audio
Yellow Book- CD Rom
Green Book- CD-I (Gaming)
Orange book- CD-R
Blue Book- laser disc (now extinct)

Just to add to that, there is also:

White book - The standard used for Video CD





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