Audio Enhancement vs Clarification; The Audio Filtering Process
I am often given digital audio recordings by litigators to enhance. They want to hear the voices in the recording better than what they currently hear. In litigation, it should…
There are several things that I do with almost every audio recording that needs to be clarified. Step one is to listen to a good portion of?if not the entire?audio recording and make observations about the noises that I feel can be removed. The second step is to determine what tools I have available that I can use to remove those unwanted sounds.? Lastly, I begin the process of noise reduction in the steps of audio clarification.
Almost every software program that?s available has a noise reduction program in it.
Once you learn how to use that noise reduction program, you first select the audio file you are working with and begin by removing unwanted noise. You?re only going to be able to remove one type of that unwanted noise, so my advice is to try different settings within the noise reduction program.
Then, the next step is to use equalization to first remove additional unwanted sounds and then use a second equalization process to increase the desired or wanted sounds. When that?s complete, the last step of the restoration and clarification process is compression. Compression basically helps to make all of the remaining sound even so that if what you?ve done so far has, for instance, decreased the volume of the digital file to such an extent that the volume is very low, the output of the compressor plug in will help you raise that volume to a more desirable level.
I am often given digital audio recordings by litigators to enhance. They want to hear the voices in the recording better than what they currently hear. In litigation, it should…
Ever since I began my career as an audio engineer back in the 70?s, noise and sound quality have always been a focus mine as an audio expert. I remember…
All recordings--both digital and analog--have a noise floor. The term originated when manufacturers of analog audio recorders referred to the extraneous noise that their machine created in addition to the…
Equalization settings can be adjusted to help the forensic expert recover lost or poorly recorded audio. This blog post covers basic audio clarification. The sound spectrum is measured in frequencies.…
The first step when restoring audio is to remove background noise. More often than not, a recording in need of sound clarification or restoration has background noise covering the sounds…