
In Progress
Posted
Paid on delivery
I have 54 short M4A mobile phone recordings, each running 40–60 seconds, that all need the same treatment: remove any background noise, balance the levels so speech sits comfortably throughout, and apply tasteful EQ for a crisp, publish-ready sound. Once polished, please return everything in the MP3, WAV, on this project. I will provide a shared folder with the raw takes Acceptance criteria • Professional sound for this voice audios • No audible hiss, hum, or room tone between phrases. • Peaks sit comfortably at –3 dB and overall loudness lands around –16 LUFS. • Voice sounds natural, not over-processed, with identical character across every file. • Files are named exactly as received and saved in M4A at the original sample rate. If you have a quick test approach, I’m happy to approve one sample file before you move on to the full batch. Thanks
Project ID: 40477974
24 proposals
Remote project
Active 2 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

Hello there, How are you? I am very much interested to do your Audio enhance project. I have completed lots of project like this one with five star ratings. So, I am ready to start now your 54 short audio enhance. Feel free to contact more details over the chat. Thank you.
€30 EUR in 3 days
5.1
5.1
24 freelancers are bidding on average €27 EUR for this job

As an experienced Music Producer, Mixing & Mastering Engineer, and Audio Editor like myself, I can certainly assure you of the professional sound quality transformation your M4A files will undergo. My 9 years of experience have equipped me well to successfully execute all the tasks you've outlined in your project description. I have spent a significant amount of time cleaning up audio from various sources including noisy interviews and mobile phone recordings, so rest assured that your raw files would be converted into polished audio gems. In terms of specific skills I can utilize in this project, sound balancing is one of my fortés. I have complete understanding and mastery of EQ techniques which I can apply tastefully to ensure a crisp sound for your audio files while maintaining their natural character. Moreover, using my proficiency with audio processing tools and keen ear for detail, I will remove any background noise or audible hiss, hum, or room tone between phrases to create a wholly immersive experience when listening to your audio. With before and after samples a part of my modus operandi, feel free to request a quick test approach before providing the full batch
€8 EUR in 1 day
5.9
5.9

Hi, I can professionally clean and enhance all 54 recordings while keeping the voice natural and consistent across every file. My process includes precise noise reduction, level balancing, EQ enhancement, and loudness matching to achieve a clean, publish-ready result without over-processing. I’ll ensure: • Clear, professional voice quality • No noticeable hiss, hum, or room tone • Peaks around –3 dB and loudness near –16 LUFS • Consistent sound character across the entire batch • Original filenames and sample rates preserved I’m also happy to process one sample file first so you can approve the quality before I complete the full project.
€30 EUR in 2 days
5.0
5.0

Hello! I’m an audio enhancement specialist with a strong focus on cleaning background noise and boosting vocal clarity. Using professional tools such as Adobe Audition along with advanced sound restoration techniques, I can deliver crisp, high-quality audio tailored to your needs. I’m able to provide fast turnaround times and can begin right away. I’d be happy to share samples of previous work and walk you through the delivery schedule. Best Regards: Yasmeen Ahmad
€30 EUR in 1 day
5.0
5.0

Hi im Gabriel a recording mixing and mastering engineer with more than 20 years of experience. I have experience on audio restoration and postproduction. I have done similar jobs here in freelancer please check my reviews and portfolio. I Will do a sample for you with one of your audios for you to decide properly. Looking forward to working with you Regards
€45 EUR in 7 days
4.9
4.9

Hey there, I am an audio enhancement specialist since 6 years and i specialize in speech enhancement, voice intelligibility enhancement and Noise reduction. #TOOLS I USE - I use professional tools like izotope RX to deliver clean results without destroying any important speech information. I use advanced noise filtering techniques to remove complex background noisew. #TURNOVER TIME - I can deliver the final file within a day along with the flexibility of further revisions for no extra cost. #FREE DEMO - Feel free to share the audio file with me to get a free demo enhancement.
€45 EUR in 1 day
4.6
4.6

Hello, I’m a professional audio engineer with over 10 years of experience in audio cleanup, restoration, podcast editing, and voice enhancement. I can professionally process all 54 M4A recordings and deliver clean, balanced, and natural-sounding audio with consistent quality across every file. Here’s what I will do for each recording: • Remove background noise, hiss, hum, and unwanted room tone • Balance and smooth voice levels for comfortable listening • Apply professional EQ and enhancement for crisp, clear speech • Ensure peaks stay around –3 dB and loudness near –16 LUFS • Maintain a natural voice tone without over-processing • Keep identical sound character and consistency across all files • Preserve original filenames and sample rates exactly as requested I work with professional tools such as Adobe Audition, iZotope RX, and advanced mastering plugins to achieve clean, publish-ready results. I’m also happy to process one sample file first so you can review the quality before approving the full batch. Fast turnaround, clear communication, and high-quality delivery guaranteed. Looking forward to working with you! Best regards Jamil Ahmed
€25 EUR in 1 day
4.0
4.0

Hello! I am thrilled about the opportunity to work on your project for the M4A audio cleanup. The task of enhancing the quality of your 54 mobile phone recordings sounds both challenging and exciting. I am confident in my ability to remove background noise, balance levels, and apply EQ adjustments to deliver crisp and professional-sounding audio files. I understand the importance of maintaining a natural voice quality while meeting the specified criteria for sound levels and file formats. I am eager to dive into this project and ensure that each recording meets your expectations. The prospect of delivering polished, publish-ready audio files is something I am looking forward to. Thank you for considering my proposal, and I am excited about the possibility of collaborating with you on this project.
€20 EUR in 1 day
3.5
3.5

Hello I can professionally clean and enhance all 54 M4A recordings by removing background noise, balancing levels, applying natural EQ, and ensuring consistent voice quality across every file while meeting your target specs of around –16 LUFS and –3 dB peaks. I’ll preserve the original naming and sample rates, and I’m happy to process one sample first for approval before completing the full batch. Regards Muhammad
€30 EUR in 1 day
3.5
3.5

Hi there, I am a professional audio editor with 8 years of professional experience. and I have a studio, I will provide you with professional video editing and post-production on films, short clips, music videos, promotions, commercials, Green Screen, etc Below is a list of the various add-ons you can request: Video Editing colour correction, PowerPoint slide sync, clip stitching, stock images/videos, video stabilization, multi-cam, green screen, social media formatting, blemish removal etc. Audio Editing noise removal, audio sync, audio enhancement, royalty-free music, sound effects Motion Graphics intros, outros, logo or text animations, transitions If you have any questions or special requirements, please don’t hesitate to contact us. We would be very happy to have the chance to assist you further with your project. Best Regards Alema Akter
€20 EUR in 1 day
3.9
3.9

Hello I can professionally clean and polish all 54 M4A voice recordings with consistent audio quality across the full batch. What I will do: * Remove background noise, hiss, hum, and unwanted room tone * Balance volume levels for comfortable listening * Apply clean EQ and light mastering for a crisp, natural voice * Normalize peaks to around –3 dB * Target loudness around –16 LUFS * Keep the voice natural and consistent across every file * Preserve original filenames and sample rates * Export final files in the requested format Workflow: 1. Review and organize all recordings 2. Process one sample first for approval 3. Apply the approved sound profile consistently to the remaining files 4. Final quality check before delivery I have experience in audio cleanup and post-production workflows, and I understand the importance of maintaining clarity without making speech sound over-processed. I’m ready to start immediately after receiving the shared folder. Thank you
€19 EUR in 7 days
0.0
0.0

Hello, I'm MD KOBIR. Expert in voice audio cleaning with Adobe & Voice AI. I'll remove noise, balance levels & deliver natural sound at -16 LUFS for all 54 files
€19 EUR in 7 days
0.0
0.0

Hey, i can do what you need, i dont really have experience here but i have been learning a los of mixing and mastering for music productions, im sure i can clear all the audios for you
€15 EUR in 3 days
0.0
0.0

Hello, I can professionally process all 54 recordings with consistent noise reduction, level balancing, EQ enhancement, and loudness normalization to achieve a clean, natural, and publish-ready result. I can also provide a processed sample from one file before proceeding with the full batch. Delivery time: 2–3 days. Best regards.
€45 EUR in 3 days
0.0
0.0

"Hello, I came across your project and I'm confident I can deliver exactly what you're looking for. I am a professional voiceover artist with experience producing clear, natural-sounding audio for YouTube videos, explainer videos, commercials, and more. I work in English and Spanish, ensuring your message reaches a wider audience with the right tone and clarity. What you can expect from me: Studio-quality audio delivery Fast turnaround time Unlimited revisions until you're 100% satisfied I take every project seriously and won't stop until the final output exceeds your expectations. I'd love to discuss your project further — feel free to message me anytime. Best regards, Dauda Adam
€19 EUR in 7 days
0.0
0.0

Hello, I can process all 54 recordings with consistent noise reduction, level balancing, and professional voice enhancement while maintaining a natural sound. I can also provide a test sample first for your approval before processing the full batch. Looking forward to working with you. Best regards.
€19 EUR in 2 days
0.0
0.0

Hi there, I can perfectly clean your 54 mobile recordings and remove all unwanted background noise while keeping the main audio crystal clear. I am highly experienced in audio editing, noise reduction, and enhancement for videos and vlogs. I use professional tools to ensure high-quality results. I can handle this bulk project easily and deliver it back to you within 24 hours. Let's get started! Best regards.
€19 EUR in 1 day
0.0
0.0

Bilbao, Spain
Payment method verified
Member since May 19, 2026
€30-250 EUR
$30-250 AUD
$250-750 USD
$30-250 USD
₹600-1500 INR
₹600-1500 INR
₹400-750 INR / hour
$58 USD
$25-50 AUD / hour
$30-250 USD
€750-1500 EUR
$250-750 CAD
$45 USD
₹600-601 INR
£250-750 GBP
$2-8 USD / hour
$30-250 USD
$10-5000 USD
$30-250 USD
$30-250 USD
₹750-1250 INR / hour