The objective of this exercise is to familiarize the reader with the handling of sound files using MATLAB and to expose the novice to perceptual attributes of sampling rate and bit resolution.
Down-sample the data-vector 'audio_in' in problem 1.3 using
>> aud_down_4 = downsample(audio_in, 4);
Use the following commands to listen to audio_in and aud_down_4. Comment on the perceptual quality of the data vectors in each of the cases