• on Audio/Video/Photography
  • Published in issue 5/2011 on page 66
About the article

Wave Sound Generator

Restful electronics

Wave Sound Generator

It doesn’t take a lot of electronics to produce simulated wave sounds. A variety of circuits for this have been published in past issues of Elektor magazine. In light of recent growing interest in a design for a wave sound generator, we took a close look at the previous version (published in February 1996) and transformed it into an updated and very compact design.

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Gerber file

CAM/CAD data for the PCB referred to in this article is available as a Gerber file. Elektor Members can exclusively download these files for free as part of their Membership. Gerber files allow a PCB to be produced on an appropriate device available locally, or through an online PCB manufacturing service. Elektor recommends its business partner Eurocircuits as the company of choice for its own prototypes and volume production in selected cases.

Resistors (SMD)
R1,R3,R4–R7,R9,R11,R13,R14,R18,R24 = 100kOhm (0805)
R2 = 33kOhm (0805)
R8 = 220kOhm (0805)
R10 = 470kOhm (0805)
R12 = 150kOhm (0805)
R15,R17 = 1MOhm (0805)
R16,R19,R21 = 1kOhm (0805)
R22,R23 = 47kOhm (0805)
P1 = 100kOhm trimpot (3306W)
P2 = 50kOhm trimpot (3306W)
Capacitors (SMD)
C1 = 100nF (0805)
C2,C3 = 100µF 16V (case-d)
C4 = 47µF 16V (case-d)
C5,C9 = 10µF 16V (case-b)
C6,C11 = 220µF 16V (case-e)
C7,C10 = 47nF (0805)
C8 = 220pF
Semiconductors (SMD)
D1 = BAT42W
T1,T2 = BC847
T4 = BCP53
T3 = BCP56
IC3 = LM2937IMP-12/NOPB
IC2 = TL084ACD
K1 = power adaptor socket (CUI PJ-007)
LS1 = miniature loudspeaker, e.g. Kingstate KDMG20008, Farnell # 1502730)
PCB # 100922-1
Assembled board # 100922-91
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