MIXING+SOFTWARE+FOR+AUDIO


 * Sound is digitised using a method called sampling.
 * This involves taking a number of of samples or 'slices' of the sound wave.
 * This is called the sampling rate.
 * Each sample is assigned a number of bits. This is called the sample size.
 * Better quality is achieved by increasing the sampling rate and / or the sampling size.



ACTIVITY

 * A file size (in bits) is calculated by multiplying the sampling rate (in kHz), the sample size (in bits), the time (in seconds) and the number of channels. Mono uses one channel and stereo uses two channels. Find the size of an audio file that:
 * 1) Uses a sampling rate of 44.1 kHz with a 16-bit sample size and lasts for one minute in stere
 * 2) Uses a sampling rate of 22.05 kHz with a 16-bit sample size and lasts for two minutes in stereo
 * 3) Convert these to Mb (note: 1 byte = 8 bits; 1Mb = 1 048 576 bytes)


 * Record two sounds; say your voice saying hello and goodbye. Use a mixing software application (e.g. Audacity) and your recorded sounds to perform examples of each of the following processes:
 * Trimming
 * Fade in / fade out
 * Combining two sounds
 * Filter out background noise