Hello all!

Very new to both the forum and audio manipulation.

Here is my dilemma:

I have an audio stream with a slight hum embedded throughout.
It just so happens that I have a sample of the "hum" which is present in the
aforementioned audio stream.

Is there a way I can remove all audio that matchs a specific sample (can I use the sample of the hum itself to remove the same type of audio waves from the other stream which has been tainted)?

Thanks in advance for any help available,
A Newbie Named Collin

If it's definitely the right hum, you can invert the hum, loop it and add it to the recording - the problem is you have to make sure it's exactly out of phase (or as close as possible) - i.e. when it's been inverted, it starts at exactly the same point as the one on the recording does. I'm no expert in this but someone here should be able to give better answers.

Something like this?

I remember Nero Wave Editor having an option to load noise profile and denoise the sample with it.

It can be well-done in Cool Edit. It can create a noise profile from the noise sample and then subtract the noise from the audio file. Several parameters care for sensible results.
This is the best-developed restoration process in CEP and works surprisingly well, unlike other restoration functions

Yes, there are several ways to remove a hum, depending on how obsessive-compulsive you are.

The 'sample noise' methods should work, either by filtering/cut-off or spectral subtraction.

If it is a coherent hum, it is probably the line frequency. I would not use either of these methods.

I would probably go with an odd harmonic comb filter at the center frequency (which would be 60kHz on the USA power grid)

If it is a hum, one or two harmonics would do, if it is a buzz, go to the 15th harmonic.

Keep the attenuation light.

Even if it is not the line frequency, I would still probably use a harmonic filter, ( I think that CEP calls it an FFT filter), I would just adjust the fundamental frequency.

A big thanks out to all who provided solutions.

I will try them and report the results back here soon!

Thanks,
Collin

For the record, does Cool Edit Pro 2 == Adobe Audition?

Differences between CEP 2 and Audition are pretty small in general. But I don't know exactly or noise reduction in particular.