What is it, Feature summary – Flight of Harmony Sound of Shadows rev1.0 User Manual

Page 3

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What is it?

The Sound of Shadows (SoS) is a voltage-controlled (VC) digital delay

module based around the PT2399 echo IC

1

from Princeton Technology – which

was, by the way, originally designed for Karaoke equipment. The SoS is essentially

two separate modules: a delay and a voltage-controlled amplifier (VCA). The

focus of the SoS was the delay while the VCA was thrown in because half of an

LM13700 IC was unused, so the VCA is very basic.

As with all f(h) products, the SoS was engineered towards maximizing

functionality while keeping cost as low as possible. If some aspects of the unit

seem awkward, it is most likely due to this. The goal is to make unique, useful,

enjoyable, and affordable instruments, not just hoover

2

out your bank account.

And remember: every instrument has its quirks and unexpected aspects,

so RTFM

3

! All the way through! Specific quirks are mentioned in the description of

the particular feature they apply to, so please read this through before emailing!

DELAY

In

Out

Input

x -1

x -1

In

Out

FEEDBACK

Clean

out

Mix

out

Mix

Delay

out

Insert

jack

EXT

VCA

out

In Out

VCA

VCAIN

jack

EXT

Sound of Shadows flowchart

Feature summary:

Delay

VC delay rate

VC feedback level

Signal input

Clean, Delayed, and Mix

outputs
Feedback loop insert jack

VCA

Input breakjack

CV input

Output

The 30-pin header on the back of the module is for the SoS expansion

module, currently in development.

1) Integrated Circuit
2) Hoover is a company that manufactures vacuum cleaners.
3) RTFM = Read The F*cking Manual!

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