Audio Enhancement – When Do It Yourself Won’t Work

What is audio enhancement?

Forensic audio enhancement is the process of removing unwanted sounds and preserving wanted sounds. Unwanted sounds include static, HVAC fans, hums and other distracting background noise. The goal is to reveal or uncover the dialogue, conversation or ‘wanted’ sound in an audio recording.

The question is ‘can a recording be enhanced?’ There are many situations where forensic audio enhancement helps reveal the events or conversations as they occurred. There are also times when an audio enhancement is unable to clarify the dialogue. The only way to tell is to test the recording in an audio forensic lab. At Primeau Forensics, we call this a preliminary analysis.

There are two types of audio recordings that can be enhanced: analog and digital.

Analog recordings are those that have been created using some type of tape recorder. They may be old and likely have lost some of their audio fidelity. Tape noise and hiss may also be present, which are further examples of unwanted noise. Analog tape also has a short shelf life, usually 25 years, which quickly degrades the quality of analog recordings. When audio forensic experts enhance analog recordings in this format, the primary goal is to restore the lost or wanted sounds such as the dialogue and other pertinent events. A secondary goal that is accomplished through this process is the transfer of the audio recording to a digital format in a forensically sound manner. This ensures that no further degradation will occur to the file and provide a duplicate of the recording that is acceptable in court.

Digital recordings are audio recordings that have been created on a digital recorder, no tape is involved. Digital recorders store the recordings on an internal chip or removable storage device like an SD card. In this case, the primary goal of the audio forensic expert is to remove any unwanted sounds from the recordings like the issues mentioned above. The audio forensic expert will also preserve an exact duplicate of the evidence recording for their own records and for the court.

After 34 years of practicing as an audio forensic expert, my team and I have successfully enhanced hundreds of poor quality audio recordings to be used in litigation’s. The reason we are asked to perform so many forensic audio enhancements is because we have been extensively trained in forensic audio enhancement, Our experts have completed and testified in dozens of cases and courts about my forensic enhancement, and know the best tools to use for the forensic audio enhancement process.

Give us a call to learn more about our forensic audio enhancement services. 800.647.4281 or email primeauforensics@Gmail.com.

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