Nick Sigma’s
Powerpoint Project

CONVOLUTION REVERBS ARE
IMPULSE RESPONSES OF
REAL ACOUSTIC SPACES.
THE IMPULSE RESPONSE IS
CAPTURED BY GENERATING A
KNOWN SIGNAL – MAKING A
SOUND IN THE REQUIRED
ENVIRONMENT AND
RECORDING THE RESULT

• Impulse
Responses are the
digital feedback of
sounds.
• Through a process
of cancellation –
adding the reverse
of a signal to the
original signal,
such as reversing a
gun shot sound
and adding it to a
gun shot sound the
sound is cancelled
out

• When you cancel out the sound of a
recorded space you’re left with the
reverberations
• Only now those reverberations are
digitized algorithms

Convolution Reverb 4 Video
With the use of Convolution Reverb
technology it is possible to recreate or even
synthesize authentic sounds of
Accoustic spaces.

• The convolution process effectively
cross-multiplies the impulse response with
the dry audio so that the end result is that
the source audio sounds as though it was
originally recorded in the real space

• So, after much trial-and-error you're back
in the studio with a gorgeous sample of a
marble office building lobby, apply it to a
lead guitar track for some serious
ambience, and it doesn't work. Are you
stuck with it?

Not at all. The current crop of IR-based convolution reverb developers generally includes a
large set of after-the-fact editing parameters as deep as any of the higher-end black boxes
of yore, with the same algorithms and user interface deployed for programming
\"conventional\" hardware digital reverbs. So that marble room can be modified in size,
length, amount of pre-delay, equalization, and so forth while retaining its original sonic
integrity and character

So how much is it?
• There are many different kinds of software
for Convolution Reverb
• While some are free and others could cost
a few hundred dollars – they all tax your
computer greatly and are not
recommended for slow or obsolete
computers

• wik: Convolution_reverb
• kvraudio.com