Effect adding apparatus

55 Pages·2013·3.07 MB·English

US005410603A ,
United States Patent 1191 [11] Patent Number: 5,410,603
Ishiguro et al. [45] Date of Patent: Apr. 25, 1995
[54] EFFECI‘ ADDING APPARATUS Attorney, Agent, or Firm-Frishauf, Holtz, Goodman &
Woodward
[75] Inventors: Shiro Ishiguro; Masatoshi Watanuki,
[57] ABSTRACT
both of Fussa; Toshiaki Kawanishi,
Hiroshima; Kohtaro Hanzawa, When a plurality of effects are simultaneously applied
Iruma; Hiroyuki Sasaki, Fussa; Jun to an input audio signal, a plurality of effect-algorithms
Yoshino, Akishima, all of Japan each for applying solely an effect to the input signal are
[73] Assignee: Casio Computer Co., Ltd., Tokyo, stored in a memory, and a plurality of combination
algorithms or combination-data which represent combi
' Japan
nations of the effects and orders in which effects are
[21] Appl. No.: 913,581 applied to the input audio signal are stored in the mem
ory. When one of the combination-algorithms or the
[22] Filed: Jul. 14, 1992
combination-data is selected, effect‘algorithms included
[30] Foreign Application Priority Data in the selected combination-algorithm or combination
data are selectively read out from the memory. A pro
Jul. 19, 1991 [JP] Japan ................................ .. 3-204871 gram for applying effects in a predetermined combina
Aug. 28, 1991 [JP] Japan ................................ .. 3-216868 tion and order is written by CPU based on the read out
effect-algorithms and combination-algorithm or combi
[51] Int. Cl.6 ............................................. .. H03G 3/00
nation-data. Receiving the program, DSP successively
[52] US. Cl. ...................................... .. 381/61; 351/63;
84/626; 84/630 applies effects to the input audio signal in accordance
with the program. As a result, the present effector needs
[58] Field of Search ................ .. 84/629, 630, 705-707,
84/626, 662, DIG. 26; 381/61, 63 less memory capacity than the conventional effector in
which a number of programs consisting of combinations
[56] References Cited of effect-algorithms are previously stored. A multi
U.S_ PATENT DOCUMENTS effector comprised of a connection of a digital effect
_ , adding device and an analog effect adding device, is
1 21121112182206; a1 provided with a memory having a plurality of memory
4’554’857 11/1985 Nishimoto ' ' areas for storing audio signals. An input audio signal, an
4:554:858 11/1985 wachi et a1: _ input signal to the analog'effect adding device and an
4,572,043 2/1986 Franz et a1, , output signal of the digital effect adding device are
4,864,625 9/1989 Hanzawa et al. . stored in respective memory areas of the memory.
4,920,850 5/1990 Matsumoto et al. ................ .. 84/626 Whether either of input signals is supplied to the digital
4,998,231 3/ 1991 381mm - effect adding device or whether the output signal of the
is‘! at - 84/63O digital effect adding device is input to the analog effect
5,, 119,, 712 6/1992 Kaat oe ..... ......................... .... 84/626 a-dd'm lg de‘g- ce-grdthb e output-Si~ gn?! ‘- 5 output 2318 a ?nal
s 257 313 10/1993 Fujishita et al 381/63 81g“ are 6°‘ 6. y °Perat1°n 0 an extem y ‘31”?’
’ ’ ' """""""""" " ated switch. In tlus way, the order in which effects are
FOREIGN PATENT DOCUMENTS applied can be altered independently of the connection
w091/01033 V1991 WIPO of the above two effect adding devices.
Primary Examiner—Forester W. Isen 11 Claims, 33 Drawing Sheets
404
413 /
41,1 I 414
INPUT DSP ‘
AUDIO AID Ei Eu 9”‘ oFllim'
PUT
SIGNAL CONVERTOR Ai A0 __ CONVERTOR SIGNAL
41 2
1 $416 415
A I D MICRO )’
CONVERTOR couPu'rEn D ,A
" CONVERTOR
o DISTORTION i
CIRCUIT
5
417
418
US. Patent Apr. 25, 1995 Sheet 1 of 33 5,410,603
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US. Patent Apr. 25, 1995 Sheet 3 of 33 5,410,603
FIG . 3
( START )
$101 SCAN SWITCHES
S102 No
YES
8103 SToRE STAGE OF
SWITCHES IN
REGISTER (R)
S104 N°
S
YE S106
S105 TRANSFER To DSP MIXING TRANSFER To Dsp
PROCESSES 1A~3A, EFFECT mxmG PRQCESSES
PROCESSES (2&2 AND 1B~3B EFFECT
COEFFICIENT M BY (A) PRocES'SES ('1 .(2)
AND COEFFIC NT
- MEMORY (B) A
‘
US. Patent Apr. 25, 1995 Sheet 4 of 33 5,410,603
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US. Patent
Apr. 25, 1995 Sheet 6 of 33 5,410,603
FIG-6
@
S201
INPUT PROCESS
i
3202 MIXING
PROCESS (1)
i
S203 EFFECT $51)
PROCES
' i
S204 MIXING
P PROCESS (2)
1
3205 EFFECT g)
PHOCES
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3206 mxme
PROCESS (a)
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3207 OUTPUT
PROCESS
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F I G - 7
PROCESS
3301 Pl1 -» W(|NL)
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5302 m2» warm)
3303 PM -> warm
i
3304 H2 —>W(INE)

US. Patent Apr. 25, 1995 Sheet 8 of 33 5,410,603
FIG-9
pnomcxsmses m) )
S501 "I
(E0 —> M1
I
5502 MoxM1->MR
P( -u|o
S503 MB -> AB
MOxM1 ->MR
7
5505 AR -» SR
MR ->AR
M08 M1 —> MR
r
S507 AR _) SR
I
< RETURN ’