Ambient Convolution Explained

The wave form for the ambient impulse used in Screaming Spaces

There is a old trick of 'reverse reverberation' here I discuss taking it to another level to create ambient music effects.

If we take any sound, record it, reverse the recording and then pass the sound through a reverberator we get reverse reverberation. When the sound is plaid forwards again, there is a ghostly pre-sound to each even on the recording. It is very recognisable as a trick used to make creepy effects in cheesy Hollywood horror movies (which my wife loves and so I end up watching - a lot).

If we make a very long reverberation indeed, which is easy with impulse response reverberation in Sonic Field (or any other software which allows arbitrary length calculations) then we can produce reverberation which goes both ways. Simply take an impulse (or generate one algorithmically) and reverse it; put the revers in front of the original and we have a forward and backward reverberation. If the impulse is long enough it will lend an ambient effect to our music.

Here I talk about and demo the effect.

This piece uses the effect heavilys


Why high throughput and low latency are not the same thing

I hear 'high throughput low latency' said so often that it saddens me - conflating the two shows real ignorance of the underlying challenges of both.



In this video I use simple analogy to explain why we must see these two as conflicting on coupled requirements. For all but the trivial case of improving efficiency, they force opposing design choices. Therefore, if we make the simple assumption that performance critical code is written well the rest of the design and implementation discussion is completely divergent.

1 Video A Day

I set myself the challenge of producing a video on youtube every day starting 29th of August till 29th Of September.


You can see to all here as I publish them - wish me luck!

29 August:
Screaming Spaces
30 August:
Internet Armageddon
31 August:
Ambient Reverb' Explained

31 August (bonus - might on call this one if I get stuck another day!):
Choir Of The Ninth Circle
1 September:
Vlogging: 3 Different Audio Choices
Compared
2nd September:
Why Challenges Are So
Important
3 Sept:
Oxford Station
4 Sept:
The Illusion Of Free Will And Why
We Must Lose It

Sept 5: MISSING! Am publishing two on the 6th to compensate.

Sept 6:
No Cuts - How 'Not Cuts' video on
Youtube is changing our perception

An experiment in additive synthesis showing
the challenge of equal temperament and
stretched harmonic series
Sept 7:
Why artificial intelligence will not happen
this century

Sept 8:
Experiments in additive synthesis
and etherial soundscapes
Sept 9:
A first real attempt to get additive synthesis
to render part of Tannhauser (Wagner)

[Two missing - will try and catch up]
Sept 12:
Why is we believe employment is so
important do we tax it into extinction?

Sept 13:
Creating a complex sound 
from repeated application of 
the same filter bank to a simple tone