output folder

Table of content

• buzzer
  • buzzer_on_off
  • play_melody

buzzer

buzzer_on_off

cd output/buzzer/buzzer_on_off

Test the buzzer my making "blink" it.

play_melody

cd output/buzzer/play_melody

Assuming a base time of 4/4, the notes' names and time are:

American	British	time
whole note	semibreve	4/4
half note	minim	2/4
quarter note	crotchet	1/4
eighth note	quaver	1/8
sixteenth note	semiquaver	1/16
thirty-second note	demisemiquaver	1/32
sixty-fourth note	hemidemisemiquaver	1/64

Please Note: the hemidemisemiquaver is also known as semidemisemiquaver

Play the melody you want by specifying the note (from the constants in musical-notes.h) and the length. Assuming that:

1. the base time of 4/4
2. 4'000 ms = 4 seconds = 1 second * 4 musical measures = 60 BMP (Beats per Minutes)

Then, the notes' length are:

type	computations	length
whole note	4000 * 1 = 4000 / 1	4000
half note	4000 * (1/2) = 4000 / 2	2000
quarter note	4000 * (1/4) = 4000 / 4	1000
eighth note	4000 * (1/8) = 4000 / 8	500
sixteenth note	4000 * (1/16) = 4000 / 16	250
thirty-second note	4000 * (1/32) = 4000 / 32	125
sixty-fourth note	4000 * (1/64) = 4000 / 64	62.5

Notes with dot:

type	computations	length
dotted whole note	4000 * 3/2 = 4000 / (2/3) = (4000 / 1) + (4000 / 2)	6000
dotted half note	4000 * 3/4 = 4000 / (4/3) = (4000 / 2) + (4000 / 4)	3000
dotted quarter note	4000 * 3/8 = 4000 / (8/3) = (4000 / 4) + (4000 / 8)	1500
dotted eighth note	4000 * 3/16 = 4000 / (16/3) = (4000 / 8) + (4000 / 16)	750
dotted sixteenth note	4000 * 3/32 = 100 / (32/3) = (4000 / 16) + (4000 / 32)	375
dotted thirty-second note	4000 * 3/64 = 4000 / (64/3) = (4000 / 32) + (4000 / 64)	187.5
dotted sixty-fourth note	4000 * 3/128 = 4000 / (128/3) = (4000 / 64) + (4000 / 128)	93.75