Forensic Audio Enhancement Services, Voice Enhancement
Voice Enhancement
Ultimately, in most instances, forensic audio enhancement aims to make dialogue more apparent. In other words, this process is also known as speech or voice enhancement. Our audio enhancement company can also enhance audio from video recordings. To demonstrate, learn more about our audio enhancement services from Audio Forensic Expert Edward Primeau in the video to the right.
Why use an expert for Audio Enhancement Services?
In contrast, the alternative to an audio expert is an audio engineer or someone with training in audio analysis. Although these individuals may be knowledgeable, their approach is mainly subjective, whereas an expert applies an objective process that prioritizes evidence integrity. Furthermore, an expert is qualified to ensure the admissibility of the clarified exhibit in a court of law.
Audio Formats We Can Enhance
Advanced audio recorders can be used in remote areas, like phones, tablets, or hidden recorders. However, when these recordings are placed poorly in an environment with noise, they introduce issues. Therefore, a qualified expert can fix these issues using repeatable methods for courtroom use.
- Smartphone audio
- Deposition videos
- Digital handheld and pocket recordings
- Micro, mini and standard cassette tapes
- Voicemail messages
- Dashcams
- 911 dispatches
- Courtroom recordings
- Confidential informant audio
- Wiretaps
Forensic Audio Enhancement Methodology
Audio enhancement is the processing and filtering of audio recordings to improve the signal quality and intelligibility of the signals of interest, such as speech, by attenuating noise or otherwise increasing the signal-to-noise ratio. Standard Terminology for Digital and Multimedia Evidence Examination (astm.org)
Evaluation
First, we decide if the recording is good enough to use enhancement techniques. Evaluation is critical to use our client's money wisely.
Identification
Secondly, we identify and reduce undesired sounds such as hissing, humming, static, clipping, sirens, wind, HVAC, and other broad-spectrum noises in the recording.
Reduce/Remove
Thirdly, we apply forensic techniques to improve the quality of the recording. Furthermore, the technician, analyst, or expert must document the potential court use process.
Enhancement
Fourth, we increase the wanted signals. in most cases, the audio signals in the human speech frequency range or voice enhancement.
Expert Reporting
Most importantly, processes applied are documented for repeatability and admissibility under expert testimony requirements.
Verification
Finally, an Audio Forensic Expert reverse-engineers and verifies the investigation to ensure the recording is accurate.
To speak directly to an expert, click below!
Audio Enhancement Services
Moreover, our tools can extract audio signals from video files as well. Specificaly, we use the most up-to-date tools and court-admissible methods to ensure accuracy of voice enhancement and maintain signal integrity. Most importantly, these processes are completed in a calibrated, isolated, and acoustically optimized environment.
Voice Enhancement
For example, this advanced tool maintains the atmosphere of a recording to amplify the speech. Overall, it is designed to divide dialogue from environmental sounds like pedestrians, cars, walking, climate, or other sounds.
ECHO-CANCELLATION
Our advanced tools provide echo cancellation, which reduces reverberance. Specifically, this process is most effective on recordings created in larger spaces where echo limits speech intelligibility.
Noise Reduction
An expert reduces unwanted sounds with a noise profile, which is called noise reduction or background noise reduction. Most importantly, this process does not affect important signals like dialogue.
Critical Listening
Critical listening is the cornerstone of audio forensics because audio experts are trained as audio engineers first. Therefore, audio experts have highly trained ears that can pick up crucial audio sections that need to be enhanced.
Equalization (EQ)
Equalization is a process that reduces unwanted frequencies and enhances needed ones. For instance, with distracting frequencies reduced/removed, audio enhancement experts can perform other procedures smoothly.
Dynamics Processing
Traditionally, compressing the sound raises the volume levels and balances them for clarity. Therefore, experts may use compression and gates to boost the sound and reduce any remaining unwanted noise.
STATE | FEDERAL | INTERNATIONAL
EXPERT WITNESS TESTIMONY
In conclusion, for court admissible audio enhancement services, trust Primeau Forensics. We use the best scientific practices to enhance recordings without compromising authenticity. Most importantly, we document our procedures and present facts without bias. Above all, our audio experts identify critical dialogue and accurately report it.
