Tandy 1000 Basic Reference Manual page 312

Chapter 10 i BASIC Keywords
This statement can be especially useful in educational applica-
tions. For example, you can have the computer respond with a
sound if a user has answered a program's prompt incorrectly (or
vice versa).
You
can use the
SOUND or PLAY
statements
to
generate musi-
cal notes from your computer. This chart shows the frequency
you specify to generate the notes in the octave above middle C.
Middle
C
is the first note in the chart.
Note Frequency
C 523.25
D
587.33
E
659.26
F
698.46
G
783.99
A 880.00
B
987.77
C
1046.50
To
generate notes in the octave below middle
C,
find the fre-
quency of the note's letter in the chart and divide that number
by 2. For example, the note A in the octave below middle C
has a
frequency of 440.00
To generate notes in the octave above middle C, find the fre-
quency of the note's letter in the chart and multiply that number
by 2. For example, the note A in the octave above middle
C
has a
frequency of 1760.00
There are 1092 clock ticks per minute. To determine the number
of clock ticks for 1 beat, divide the beats per minute into 1092.
The chart below shows the number of clock ticks for some typical
tempos.
Beats Ticks
Tempo per minute per minutes
Largo 40- 60 27.3 -18.2
Larghetto 60- 66 18.2 -16.55
Adagio 66- 76 16.55-14.37
Andante 76-108 14.37-10.11
Moderato 108-120 10.11- 9.1
Allegro 120-168 9.1
-
6.5
Presto 168-208 6.5
-
5.25
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