Help request! Making a 'hiss' echo

[nedius]

Hi there,

I'm trying to make a 'radio transmission' style voice effect that matches that used in the X Wing and TIE Fighter series computer games.
The effect I need I'll add an example of in a bit, but it sounds like a radio transmission.

I can get the voice sounding like it is coming over a radio using the equaliser and high pass filters, but what I can't get is the static hiss that accompanies it.

I can add white noise in the back ground, but in the game, the noise isn't constant - it is like an echo. It's as if someone has put a .1 second delayed echo, then convereted the echo into a static hiss rather than a voice.

Any way of doing this in Audacity? Will try to get an example.

Thanks!!

[kozikowski]

Either post a link to the effect, or a sample sound file of the actual effect.

http://forum.audacityteam.org/viewtopic ... 49&t=72887

Koz

[nedius]

Here it is:

1m1r2.wav

TIE Fighter radio message

(56.92 KiB) Downloaded 23 times

[kozikowski]

There's not of actual noise there, so it could be almost anything. How about "Dirty Noise" (attached). Does that work?

Koz

[Trebor]

... but what I can't get is the static hiss that accompanies it.

It sounds like quantization noise ...

Dubya, before-after , EQ then Steve's Quantization distortion @85.wav

the setting of 85 on quantization distortion maybe a bit too much.

(1.1 MiB) Downloaded 23 times

Steve made a distortion plugin for Audacity which includes a "quantization" option,
that plugin can be downloaded from here ... http://forum.audacityteam.org/viewtopic ... 96#p237796

[nedius]

that sounds spot on! thanks!!

[Trebor]

Using a noise-gate with a 100-200ms decay will emulate the squelching effect of an actual radio transmission : where the hiss persists for a fraction of a second after the person stops speaking, then there is true silence until they speak again.