Convolution Reverb

1. Nick Sigma’s
Powerpoint Project

2. 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

3. • 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

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

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

6. • 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

9. • 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?

10. 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
quot;conventionalquot; 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

11. 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

12. • wik: Convolution_reverb
• kvraudio.com