- Nick’s office hours in new room
- Fraser 208
- (Same time: Wed. 6:00 - 7:00)
- Generating a sine tone
- Sine wave of frequency f cycles per second is sine evaluated over 2πf radians per second
- So at time t seconds, this function has value sin( 2πf t )
- Matlab
soundfunction plays a sound wave - Example:
>> f = 440; >> t = 0 : 1/4000 : 0.5; >> tone = sin( 2 * pi * f * t ); >> sound( tone, 4000 ); >> sound( tone, 4000 ); >> tone2 = sin( 2 * pi * 2*f * t ); >> longtone = [ tone tone2 ]; >> sound( longtone, 4000 ); - Mini-lab: write a script that generates and plays short (1/2 second?) tones of 440 Hertz (A), 880, 1760, and 3520
- You can also work with complete music samples, e.g.,…
>> [v,rate] = audioread( 'Vogelfaenger.wav' ); >> rate rate = 44100 >> size(v) ans = 1123353 2 >> sound( v, rate ) >> i = 1 : 12 : length(v); >> v2 = v( i, : ); >> sound( v2, rate/12 ); >> load handel >> sound( y, Fs ); >> sound( v, rate )
- Plotting and curved lines
- Read section 3.5
- Watch “Parametric Curves” video at https://www.youtube.com/watch?v=tsnHL1Lb5MU