<s>
The	O
Mu-Tron	B-Algorithm
III	I-Algorithm
is	O
an	O
envelope	O
filter	O
made	O
by	O
Musitronics	O
Corporation	O
.	O
</s>
<s>
Extracting	O
elements	O
from	O
one	O
of	O
the	O
prototypes	O
of	O
a	O
synthesizer	O
he	O
was	O
developing	O
for	O
Guild	O
Guitar	O
Company	O
,	O
Mike	O
Beigel	O
based	O
the	O
Mu-Tron	B-Algorithm
III	I-Algorithm
,	O
at	O
the	O
instigation	O
of	O
Guild	O
engineer	O
Aaron	O
Newman	O
,	O
on	O
a	O
prototype	O
called	O
the	O
Timbre	O
Generator	O
.	O
</s>
<s>
The	O
Mu-tron	B-Algorithm
III	I-Algorithm
could	O
be	O
used	O
for	O
any	O
number	O
of	O
electric	O
instruments	O
.	O
</s>
<s>
The	O
Mu-tron	B-Algorithm
III	I-Algorithm
was	O
an	O
instant	O
success	O
and	O
was	O
used	O
by	O
jazz/fusion	O
guitarist	O
Larry	O
Coryell	O
,	O
Funkadelic	O
bass	O
player	O
Bootsy	O
Collins	O
(	O
for	O
his	O
"	O
Space	O
Bass	O
"	O
)	O
,	O
guitarist	O
Jerry	O
Garcia	O
,	O
and	O
Stevie	O
Wonder	O
,	O
who	O
used	O
it	O
on	O
his	O
Clavinet	O
for	O
the	O
song	O
"	O
Higher	O
Ground	O
"	O
.	O
</s>
<s>
Beigel	O
was	O
successfully	O
granted	O
a	O
patent	O
for	O
the	O
circuitry	O
of	O
the	O
Mu-tron	B-Algorithm
III	I-Algorithm
.	O
</s>
<s>
Musitronics	O
licensed	O
the	O
Mu-tron	B-Algorithm
III	I-Algorithm
circuitry	O
to	O
a	O
few	O
different	O
companies	O
in	O
the	O
seventies	O
–	O
the	O
Univox	O
Funky	O
Filter	O
and	O
Monacor	O
Effectmatic	O
are	O
notable	O
examples	O
.	O
</s>
<s>
The	O
original	O
Mu-tron	B-Algorithm
III	I-Algorithm
ran	O
on	O
18V	O
,	O
using	O
two	O
9V	O
batteries	O
;	O
this	O
gave	O
it	O
a	O
wider	O
dynamic	O
range	O
and	O
more	O
headroom	O
compared	O
to	O
effects	O
that	O
ran	O
on	O
9	O
volt	O
.	O
</s>
<s>
The	O
Mu-tron	B-Algorithm
III	I-Algorithm
used	O
opto-isolators	O
to	O
control	O
the	O
filter	O
,	O
which	O
was	O
novel	O
for	O
the	O
time	O
,	O
a	O
method	O
would	O
also	O
be	O
used	O
for	O
the	O
Mu-tron	O
Phasor	O
II	O
and	O
Bi-Phase	O
.	O
</s>
<s>
The	O
state	O
variable	O
filter	O
in	O
the	O
Mu-tron	B-Algorithm
III	I-Algorithm
allowed	O
for	O
low-pass	O
,	O
bandpass	O
,	O
and	O
high-pass	O
filter	O
response	O
,	O
which	O
could	O
be	O
triggered	O
from	O
low	O
to	O
high	O
or	O
vice	O
versa	O
.	O
</s>
<s>
When	O
ARP	O
Instruments	O
bought	O
Musitronics	O
in	O
‘	O
79	O
,	O
they	O
made	O
the	O
Mu-tron	O
line	O
for	O
about	O
a	O
year	O
before	O
going	O
out	O
of	O
business	O
,	O
and	O
the	O
Mu-tron	B-Algorithm
III	I-Algorithm
was	O
no	O
more	O
.	O
</s>
<s>
With	O
the	O
advent	O
of	O
the	O
stompbox	O
revival	O
of	O
the	O
nineties	O
,	O
the	O
Mu-tron	B-Algorithm
III	I-Algorithm
became	O
one	O
of	O
the	O
big-ticket	O
items	O
for	O
collectors	O
and	O
players	O
alike	O
.	O
</s>
<s>
But	O
in	O
2014	O
,	O
a	O
renewed	O
version	O
of	O
the	O
Mu-Tron	B-Algorithm
III	I-Algorithm
,	O
now	O
called	O
the	O
Tru-Tron	O
3X	O
,	O
was	O
made	O
by	O
Beigel	O
's	O
new	O
company	O
Mu-FX	O
.	O
</s>
