AnarczewFall2010ITEC2110-04Project1

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In this project I demonstrate the effect on file size (and therefore download speed) of saving an audio file in various formats


Format

File size

Dialup download time

ADSL download time

Download

Using Audacity I produced a .wav format file which is:

-10.19 MB-

24.26 Minutes

13.365 Seconds

Click Here!

Using Audacity I produced a .? format file which is:

-10.19 MB-

24.26 Minutes

13.36 Seconds

Click Here!


The effect of different sampling criteria on audio quality:


All the audio downloads (shown above) are full CD quality sampled at 44,100 samples per second with a 2 byte quantization level.

Below I demonstrate the effect of changing the sample rate and quantization level:

Format

File size

Dialup download time

ADSL download time

Download

Using Audacity I produced a .wav format file which has a sample rate of 22050 samples per second and a quantization level of 16 bits : (link the .wav to wikipedia .wav entry)

-11.77 MB-

28.02 Minutes

15.436 Seconds

Click Here!

Using Audacity I produced a .wav format file which has a sample rate of 22050 samples per second and a quantization level of 8 bits : (link the .wav to wikipedia .wav entry)

-5.88 MB-

14 Minutes

7.7114 Seconds

Click Here!

Using Audacity I produced a .wav format file which has a sample rate of 8000 samples per second and a quantization level of 16 bits : (link the .wav to wikipedia .wav entry)

-2.52 MB-

6 Minutes

3.3049 Seconds

Click Here!

Using Audacity produced a .wav format file which has a sample rate of 8000 samples per second and a quantization level of 8 bits : (link the .wav to wikipedia .wav entry)

-1.26 MB-

3 Minutes

1.6534 Seconds

Click Here!

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