
Closed
Posted
I have a set of security-camera recordings where low-level, whispered speech is buried beneath steady indoor ambience. I need those voices pulled forward so they can stand in court, so the overriding objective is to clarify speech for legal evidence – not simply improve overall fidelity. Here is how I would like us to work together: • Pilot pass: start with one representative file. Either return a short enhanced excerpt or give me an honest technical feasibility note so we know how much intelligibility can realistically be recovered before I commit the full batch. • Full restoration: on approval, process every minute of each recording (the entire timeline matters, not just a clip). Apply careful noise reduction, spectral editing, and targeted amplification that reveals distant or whispered conversations without inventing syllables. Please work nondestructively and preserve the untouched originals. • Deliverables: 24-bit WAVs for every enhanced file, plus a timestamped transcript. Wherever a word is uncertain, bracket it with “(inaudible)” or a “(?)” so the doubt is explicit. Experience with surveillance audio, chain-of-custody protocols, and tools such as iZotope RX, Cedar, or similar advanced forensic suites will be critical. If you have courtroom or investigative references, all the better. Let me know what you need to start the pilot; I can supply the raw file, a timecode log, and any contextual notes immediately.
Project ID: 40617322
18 proposals
Remote project
Active 7 days ago
Set your budget and timeframe
Get paid for your work
Outline your proposal
It's free to sign up and bid on jobs
18 freelancers are bidding on average $29 USD/hour for this job

Hello, I understand you need to pull out those whispered voices from your security recordings for court use. Here’s the plan: we’ll start with a sample file to see how much clarity we can achieve—that way, you get a real sense of what’s possible without committing to the whole batch. I’ve done this before for a client who needed similar work, and we managed to bring out crucial details that made a big difference in their case. Once we nail down that pilot, I’ll go through every minute of the recordings, carefully reducing noise and enhancing the speech while keeping everything intact. We’ll also provide a timestamped transcript to highlight any unclear parts. What’s the length of the recordings we’re dealing with? And are there specific sections you think might be more challenging than others? Ramandeep K.
$38 USD in 40 days
7.7
7.7

I've just checked the file you've shared. There's not that much that can be done. Audio quality is too poor. But I can process it anyways. I can ensure you any results. But I have 6 power algorithms that will recognize any voice if theres any to be found. You can check my portfolio, I've just did a similar job and worked very well. But passing it through those algorithms takes me a few minutes each, and I need that to be paid. Can't ensure quality. Might work, might not. Let me know.
$38 USD in 10 days
6.8
6.8

Hi there, As a Professional Audio engineer and Certified Video Editor with experience of 10 years. I can do professional audio editing and post-production for radio shows, podcasts, interviews, presentations, voiceovers, audio lectures, and audiobooks, and remove background noise from audio and video clips. You can visit my profile too, I have completed more than 200+ projects on Freelancer.com with all 5-star feedback. Profile link: https://www.freelancer.com/u/Perfectworkers05 My services include; ★ Cleaning unwanted background noise. ★ Noise reduction (hiss, hum, buzz, or other static noise profiles) ★ Mixing operations (adding intros, outros, background music, splitters, etc) ★ Audio mastering ★ Enhance/mix audio for video including sound effects, music, and voiceover ★ Edit Voiceover work - editing to a script, scrubbing for mistakes, uhms, ahs, and deep scrubbing to remove breathes ★ Loop sections of audio to create a longer file ★ Merge multiple files into one ★ Cut a single file into multiple separate files ★ Deliver in a file format of your choice and more & more… I strive to provide a consistent and reliable editing experience for all of my clients by offering a hassle-free outsourcing experience. So feel free to contact me and I will do my best to help you. Cheers..!!
$25 USD in 4 days
6.5
6.5

Hello, How are you today? After carefully reviewing your requirements, I'm confident in my ability to deliver the best result with the highest accuracy in the shortest time possible as I have completed similar projects as an expert where I delivered 100% quality. Chat me up to get this project started immediately. Thank you.
$25 USD in 10 days
1.1
1.1

Hi, I am ready to process your security camera recordings using non-destructive spectral editing to elevate the low-level whispered speech for legal evidence. I will handle the pilot pass first to establish feasibility and deliver 24-bit WAV files along with timestamped transcripts. Let me know if the source audio is uncompressed. Recently, I completed a forensic audio restoration project on low-amplitude surveillance footage containing heavy ambient background noise. The objective was to produce courtroom-ready evidence while preserving strict audio integrity. I used iZotope RX Advanced to apply adaptive noise suppression and bandpass filtering to clarify distant speech. I look forward to discussing the project further and helping bring your vision to life. Best, Ariba
$38 USD in 40 days
0.0
0.0

With my extensive background in bug fixing, troubleshooting, and technical support, I am well-aware of the need for precision and efficacy in improving audio quality. While my profile might not explicitly list audio services as a key skill, it is rooted in my proficient problem-solving aptitude that can be effectively applied to your project as well. This position implies a clear correspondence between our abilities, as presenting clarity in court is an absolute necessity rather than just enhancing fidelity. Moreover, my proficiency in using tools such as iZotope RX will facilitate detailed noise reduction and spectral editing to recover whispered voices while diligently preserving
$29 USD in 40 days
0.0
0.0

YARDLEY, United States
Member since Jul 31, 2026
$50-100 USD / hour
$30-250 USD
₹750-1250 INR / hour
₹1500-12500 INR
$18.5 USD / hour
$10-30 AUD
$15-25 AUD / hour
$15-25 USD / hour
₹600-1500 INR
$15-25 USD / hour
$15-25 USD / hour
₹12500-37500 INR
$250-750 USD
$50 USD / hour
$18.5 USD / hour
£20-250 GBP
$10-30 USD
$10-30 USD
$50-100 USD
$50 USD / hour