Editing Audio?

[Hulk]

Anyone in here edit their recorded lectures from class?

I'm using WavePad and I'm just beginning to explore it.

Question 1:

1) There is "noise" in the recording. Even after applying two methods of noise cancellations, "Spectacular subtraction" and "multiband noise gate -40db" I can still hear it.

I then applied "band pass filter 8,000-12,000" which seemed to get rid of the noise.

So my question is: What is the range of human voice, and the humming hissing, is that a low or high frequency? It appears to be a high frequency, how do I find out exactly at what frequency the noise happens at?

2) Does it matter in what order you apply the effects? For example:

High pass filter 400Hz
automatic gain control
spectacular subtraction
multiband noise gate
band pass

Any tips for editing lectures?

My main problem seems to be the constant noise...

 

[phide]

1) There is "noise" in the recording. Even after applying two methods of noise cancellations, "Spectacular subtraction" and "multiband noise gate -40db" I can still hear it.

Not surprising. Broadband noise isn't generally difficult to remove, but remove too much and you'll start to notice a lot of degradation of the content. The best way to isolate and attenuate broadband noise is to use noise profiling, which isn't something WavePad probably supports (don't know).

So my question is: What is the range of human voice

Generally between 90 Hz is where the average male voice starts to have real content, up to about 3500 Hz.

It appears to be a high frequency, how do I find out exactly at what frequency the noise happens at?

Use a spectrum meter or FFT meter. WavePad probably has the latter.

Does it matter in what order you apply the effects.

Yes. As to what order is 'best' depends on a number of factors, so just play around with it.