Draft:Beat (acoustics)/WJS

Beat (acoustics)/header

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Beat (acoustics)/header

• Reference to musing beats to tune instruments: w:special:permalink/1130834192#Uses

Images

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  Beat
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  Beat
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  Beat
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  Beat WJS
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  Beat WJS
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  Beat
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  WJS

Periods-Frequencies Table

Periods-Frequencies Table

$1<p/q<2$

$f_{\text{x}}>f_p>f_q>f_x$

$T_x<T_q<T_p<T_0$

$T_q=p{T}_x$	$T_p=q{T}_x$	$q{T}_p=p{T}_q$
$p{f}_q=f_x$	$q{f}_p=f_x$	$q{f}_p=p{f}_q$
$T_0=pq{T}_{x}pq{f}_0=f_x$
$f_p=p{f}_0=f_x/q{f}_q=q{f}_0=f_x/p$

lilypond

<score sound="1">\language "english" \relative c' { \tempo 4 = 80 c4 g' <c, g'>2 c4 gs' <c,gs'>2 c4 fs <c fs>2 } % r2 <c e g bf> \bar "|."} \addlyrics { \skip 1 fifth \skip 1 \skip 1 minor-sixth \skip 1 \skip 1 tritone \skip 1 "C7" } </score>

<score sound="1">\language "english" \relative c' { \tempo 4 = 40 \set Staff.midiInstrument = "reed organ" c8 g' <c, g'>2. c8 gs' <c,gs'>2. c8 fs <c fs>2. } % r2 <c e g bf> \bar "|."} \addlyrics { \skip 1 fifth \skip 1 \skip 1 minor-sixth \skip 1 \skip 1 tritone \skip 1 "C7" } </score>

See also

• Python/Musical intervals (numpy matplotlib)/playsound: Students interested in Python programming could do a project based on the code used to create these sound files.
• Sing free/Physics of music