Joshua Cuneo ITEC 2110 Project 1

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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:

10.1 MB

25.2 minutes

13.89 seconds

Click here to download this version

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

10.1 MB

25.2 minutes

13.89 seconds

Click here to download this version


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 :

5.06 MB

12.63 min

6.95 sec

Click here to download this version

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 :

2.53 MB

6.32 min

3.48 sec

Click here to download this version

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 :

1.83 MB

4.57 min

2.52 sec

Click here to download this version

Using Audacity produced a .wav format file which has a sample rate of 8000 samples per second and a quantization level of 8 bits :

941 KB

2.29 min

1.26 sec

Click here to download this version


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