Removing unwanted background sounds

[efiste2]

Im putting together a project of a Cold War Warning System which will play warning sounds in MP3 format, sampled from a Documentary made on the subject, however the main sample I need, has the sound of something being smashed included in the clip. Is there anyway of somehow removing this unwanted sound......If this is not possible Im intending to record my own vocal track, but it requires altering as though it was being broadcast down an old telephone line in a similar manner to the sample, is there a program that has such a filter to allow me to do this.....


ATTACK RED 1.mp3

[raffriff42]

Don't think the noise can be removed. There's no frequency separation, as both signals are highly distorted.

> altering as though it was being broadcast down an old telephone line

Yes, that can be done in Audacity.
1. High pass, 150Hz
2. Low pass, 3000 Hz
3. Distortion -- for example, try these:

http://www.instructables.com/id/DistortionOverdrive-Effect-in-Audacity/
1. Effect, Audacity, Leveller.

* Degree of Leveling = Heaviest
* Threshold Noise = -35 dB

2. Effect, Repeat Leveller
3. Effect, Audacity, Leveller.

* Degree of Leveling = Heaviest
* Threshold Noise = -50 dB

(this one is really too strong for your purposes)

MORE DISTORTION EFFECTS

Effect, LADSPA, Diode Processor
* Mode = 1.0 (half wave)

Effect, LADSPA, ViNil (Vinyl Effect)
* Year = 1931

Effect, LADSPA, Valve Saturation
* Level = 1.0
* Character = 0.0

[jagabo]

Crash sound removal: ain't happenin'. Distortion can be achieved by blowing out the peaks with the Amplify filter (allow clipping, work in integers, not floating point), then lowpass, highpass filtering.

[efiste2]

Thanks for the educated advice chaps, I have used a TEXT to SPEECH clip, and am going to apply Raffriff's advice. Thanks again!!

[netmask56]

This software would probably do it - great for forensic work and a whole lot more however the price is really not for a one off situation, maybe you might approach a professional studio that's will to assist? https://www.izotope.com/en/products/repair-and-edit/rx/rx-advanced.html