Audio Processing is a field at the intersection of mathematics and engineering that focuses on the capture, synthesis, analysis, and manipulation of audio signals. An Audio Signal Processing Expert is a person well-versed in the field and has the ability to create solutions that can shape, record, alter and delete sounds for almost any application. This expert can analyze and record music, speech and other environmental sounds, as well as design virtual sound environments through speakers or headphones.

Audio Processing requires sophisticated algorithms and calculations used to process audio signals in real time or in post production. It is used in a wide range of applications such as improving user experiences on social networks and streaming websites, creating complex virtual worlds used to train AI models, developing interactive music systems or sound synthesisers that mimic musical instruments or even developing music remixes from existing recordings.

Here's some projects that our Audio Signal Processing Experts made real:

  • Developing voice-over videos for promotional purposes in various languages;
  • Creating interactive virtual sound environments;
  • Tuning audio signals to aesthetically improve user experience;
  • Developing speech recognition systems to replace human labor;
  • Designing specialized sound synthesisers;
  • Developing a platform that combines conversation tracking with sound editing capabilities;
  • Curating speech recordings to create archives with particular themes.

At Freelancer.com, our Audio Signal Processing Expert specialize in transforming raw audio data into uniquely realized technological experiences while creating meaningful insights from music and speech data at scale. If you are looking to create your project that requires the skills of an experienced Audio Signal Processing Expert then why not post it up on Freelancer.com? Our expert professionals are always ready to turn your ideas into reality! Get started now by posting your project today!

From 19,081 reviews, clients rate our Audio Signal Processing Experts 4.92 out of 5 stars.
Hire Audio Signal Processing Experts

Audio Processing is a field at the intersection of mathematics and engineering that focuses on the capture, synthesis, analysis, and manipulation of audio signals. An Audio Signal Processing Expert is a person well-versed in the field and has the ability to create solutions that can shape, record, alter and delete sounds for almost any application. This expert can analyze and record music, speech and other environmental sounds, as well as design virtual sound environments through speakers or headphones.

Audio Processing requires sophisticated algorithms and calculations used to process audio signals in real time or in post production. It is used in a wide range of applications such as improving user experiences on social networks and streaming websites, creating complex virtual worlds used to train AI models, developing interactive music systems or sound synthesisers that mimic musical instruments or even developing music remixes from existing recordings.

Here's some projects that our Audio Signal Processing Experts made real:

  • Developing voice-over videos for promotional purposes in various languages;
  • Creating interactive virtual sound environments;
  • Tuning audio signals to aesthetically improve user experience;
  • Developing speech recognition systems to replace human labor;
  • Designing specialized sound synthesisers;
  • Developing a platform that combines conversation tracking with sound editing capabilities;
  • Curating speech recordings to create archives with particular themes.

At Freelancer.com, our Audio Signal Processing Expert specialize in transforming raw audio data into uniquely realized technological experiences while creating meaningful insights from music and speech data at scale. If you are looking to create your project that requires the skills of an experienced Audio Signal Processing Expert then why not post it up on Freelancer.com? Our expert professionals are always ready to turn your ideas into reality! Get started now by posting your project today!

From 19,081 reviews, clients rate our Audio Signal Processing Experts 4.92 out of 5 stars.
Hire Audio Signal Processing Experts

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    29 jobs found

    We are building a real-time voice agent using Elevenlab's WebSocket API and need an expert in Freeswitch to help us bridge our current call flow to the Elevenlab's voice agent. Requirements:
 - Proven experience with Freeswitch core and module development
 - Experience with `mod_audio_fork` and `mod_audio_stream`
 - Deep understanding of SIP/RTP/media flows What you will do:
 - Connect our existing Freeswitch server with Elevenlab's WebSocket-based voice agent using `mod_audio_fork` and `mod_audio_stream`, we need both to be configured. 
 Enable seamless, real-time, bi-directional audio between the caller and the voice agent
. Stream audio to Elevenlab in real-time and handle incoming transcription/command messages. Maintain high availability and low latency across mu...

    $277 Average bid
    $277 Avg Bid
    10 bids

    I need help sorting and editing raw radio audio content. Requirements: - Noise reduction - Cutting and trimming - Volume adjustment - Bleeping names and locations throughout Ideal Skills and Experience: - Proficiency in audio editing software - Experience with radio audio content - Attention to detail and quality

    $343 Average bid
    $343 Avg Bid
    34 bids
    Audiobook Voice Talent Needed
    6 days left
    Verified

    Need a voiceover for my memoir. It is 16 chapters in total about 250 pages. Need an ethnic female voice,

    $15 Average bid
    $15 Avg Bid
    11 bids
    Real-Time AI Avatar Streaming
    6 days left
    Verified

    I want to take my livestreams on macOS to the next level with a real-time AI avatar that feels alive on camera and is ready to drop straight into OBS as a virtual source. Here is the core of what I need built: • The avatar must track my face through an ordinary webcam, translate subtle expressions in real time, and lip-sync perfectly to whatever I say on-mic. • I need the voice layer to offer several high-quality, fully licensed synthetic voices that I can switch on the fly. All voice cloning or TTS work has to be ethical and consent-based; no grey-area datasets. • Latency has to stay low enough for professional broadcasting—ideally under 50 ms from camera to virtual camera output. • Everything has to run smoothly on Apple-silicon Macs and slot into OBS wit...

    $206 Average bid
    $206 Avg Bid
    53 bids

    1. Developer will use JUCE (C++). This code serves as the "Bridge" logic. -Background Thread to talk to Python. Background Thread Logic to talk to Python, The FIFO Buffer Strategy The Python Bridge. I have the C++ Bridge Logic. Developer Implementation Details 1. The "FIFO" Buffer (First-In, First-Out)In C++, you cannot simply stop the audio clock. The developer must implement a FIFO Buffer. This collects the "dry" audio chunks from the DAW and holds them until the Python engine is ready to swallow the whole file. 2. Communication ProtocolFor the "Hybrid" version, the developer has two choices for how C++ talks to Python:File-Based (Easier): C++ writes $rightarrow$ Python processes $rightarrow$ C++ reads out.wav.Socket-Based (Pro): C++ sends ...

    $530 Average bid
    NDA
    $530 Avg Bid
    50 bids

    Description We're developing a battery-powered consumer audio device that plays pre-loaded audio recordings on a daily schedule (three fixed times per day). Audio quality is the #1 technical priority — every design decision (DAC selection, power delivery, speaker driving, trace routing) should prioritize clean, warm, rich audio reproduction. This is Phase 1 — electronics design only. Enclosure design is a separate engagement. Your deliverables are digital design files. We handle fabrication and assembly separately via JLCPCB, so your designs must be production-ready and JLCPCB-optimized. No enclosure work — that's a separate Phase 2 engagement. Device Functionality Plays a 2–3 minute audio recording at three scheduled times daily 3 toggle switches to en...

    $612 Average bid
    $612 Avg Bid
    16 bids

    I need assistance configuring a Bose PowerShare PS404D & PS604D at an event venue. The system will use microphones as the audio source. Key Requirements: - Configure Bose PowerShare PS604D & PS404 - Set up for multiple microphones - Ensure optimal audio quality Ideal Skills and Experience: - Experience with Bose audio equipment - Background in sound system configuration - Ability to work in event settings

    $555 Average bid
    $555 Avg Bid
    6 bids

    I'm looking for a skilled developer to create a sound mixer program specifically for Windows. The mixer should feature effects processing. Key Requirements: - Compatible with Windows - Effects processing capabilities Ideal Skills: - Experience in audio processing software development - Proficiency in Windows application development - Knowledge of effects processing algorithms and implementation Please provide examples of similar work done.

    $331 Average bid
    $331 Avg Bid
    52 bids

    I have a dedicated space that I want to turn into an “audio party room” focused on live performances. I’m looking for a specialist who can take the room from its current blank–canvas state to a fully functional venue-style environment. Here’s what I need: • A careful assessment of the room’s dimensions and existing materials so we understand its acoustic profile. • A complete acoustic treatment and speaker layout plan that will let small bands or solo artists sound their best without unwanted echo or dead zones. • Clear equipment recommendations—feel free to advise on everything from speakers and amplifiers to possible microphone, mixer, or soundproofing solutions, depending on what you think is essential for reliable live per...

    $1032 Average bid
    $1032 Avg Bid
    2 bids

    I will provide a corpus of raw call recordings, each in MP3 format, and I need a machine-learning model that can automatically flag fraudulent activity. The model must correctly recognise the three problem categories—Phishing, Robocalls and Telemarketing scams—without human intervention. What I expect you to handle: • Pre-processing: clean the audio and extract features (e.g., MFCCs or spectrograms) that capture speaker and content cues. • Modelling: design, train and fine-tune a classifier; CNN, RNN, Transformer or a hybrid approach is acceptable if it improves accuracy. • Evaluation: deliver precision, recall, F1 and a full confusion matrix for each fraud type so I can judge real-world performance. • Deployment assets: an inference script or small R...

    $94 Average bid
    $94 Avg Bid
    21 bids

    I need clean, well-balanced recordings that capture two distinct sound sources while the vehicle moves through normal city traffic in Serbia: • the entertainment system output (radio, navigation prompts, music, etc.) • the natural ambient cabin sound produced by passengers, HVAC and road-borne noise Recording should occur during typical daytime city driving—stop-and-go traffic, traffic lights, and short bursts of acceleration. No highway segments or long idling periods are required. Payment is released once the audio passes a quick spectral check and the log matches the content.

    $25 Average bid
    Local
    $25 Avg Bid
    4 bids

    I need a small, self-contained Python backend that ingests local MP3 files and automatically extracts musical information. For every track the service must detect • BPM and time signature • Overall tempo as well as integrated loudness (LUFS or a comparable metric) • Phrase boundaries and sections of complete silence Once a file is processed the results have to be written to a single CSV file—one row per track, neatly formatted with column headers for each metric. No database or JSON output is required. A minimal REST or command-line interface that lets me submit a path to an MP3 and returns the processing status is enough; the core value is the signal-processing code itself. Please rely on well-known Python libraries such as librosa, Essentia, pydub or simil...

    $30 / hr Average bid
    $30 / hr Avg Bid
    148 bids
    Vinyl Audio Restoration
    1 day left
    Verified

    I need a 45 vinyl record edited. Key tasks include: - Audio restoration: Removing pops and clicks, enhancing sound quality, and balancing audio levels. Ideal Skills and Experience: - Experience with vinyl record restoration - Proficiency in audio editing software - Attention to detail and high-quality output

    $250 - $750
    Urgent Sealed
    $250 - $750
    40 bids

    I have a pre-processed collection of aligned audio-video clips and I want to push them through the AVHubert CoDA pipeline to obtain a clear Character Error Rate (CER) metric. The raw training and validation splits are ready; what’s missing is the glue code and know-how to hook my data into the official AVHubert / fairseq framework, run inference, and surface the CER report. Here’s what I expect at the end: • A working script or set of commands that load my dataset and execute AVHubert CoDA end-to-end (feature extraction, decoding, and CER calculation). • A brief README summarising environment setup (Python, PyTorch, fairseq, ffmpeg, KenLM, etc.) and any extra dependencies. • The final CER value plus the log files or JSON outputs that back it up, so I can re...

    $20 Average bid
    $20 Avg Bid
    14 bids

    Hello, I am building a small data collection tool for a medical AI research project. The goal is to collect doctor-patient role-play audio data and prepare it for AI training. I need a simple system with the following features: 1) Web-based interface (works on mobile and desktop) 2) Upload audio files (WAV/MP3) 3) Automatic speech-to-text using Whisper 4) Editable transcript (dialect correction) 5) Field for medical Arabic normalization 6) Term notes input 7) Automatic folder/package generation per session 8) Cloud storage (Google Drive / S3 or similar) This is Phase 1: Data collection only (no diagnosis, no reports). Tech preference: - Frontend: Web (React or simple HTML) - Backend: Python (Flask/FastAPI) - ASR: Whisper - Storage: Cloud + Local Deliverable: A working MVP that allow...

    $466 Average bid
    $466 Avg Bid
    123 bids

    I have a two-minute phone recording where a loud television overwhelms the conversation. The clip contains only female voices, and right now they sound muffled beneath the background noise. The task is twofold and both parts matter equally to me: first, remove or greatly suppress the TV sounds; second, bring the voices forward so every word is clear and natural without introducing distortions or robotic artifacts. Please work from the original file and deliver a cleaned, ready-to-share WAV or high-quality MP3 once complete. A brief note on the processing chain you used (e.g., iZotope RX, Adobe Audition, Audacity plug-ins, AI denoising, etc.) will help me understand the steps for any future edits. If a quick preview can be supplied before final export so I can confirm intelligibili...

    $101 Average bid
    $101 Avg Bid
    34 bids

    We are looking for a reliable and detail-oriented podcast editor for ongoing daily work. We produce a short-form audio only podcast episode every weekday (5 days per week). Each episode is approximately 2–3 minutes long and consists of: • Intro audio • Main content (single speaker voice recording) • Outro audio Scope of work per episode: • Insert intro and outro audio files • Edit the voice recording to remove mistakes, pauses, stumbles, and unnecessary gaps • Clean and optimise audio for clarity and consistent volume • Export the final episode to our specified format (MP3) • Upload the completed file to our Dropbox folder What we are looking for: • Fast turnaround • High attention to detail • Consistent audio qual...

    $242 Average bid
    $242 Avg Bid
    28 bids

    I need the audio of a 14-minute speech/interview video cleaned up. The main issue is distortion. Ideal Skills and Experience: - Proficiency in audio editing software - Experience with noise reduction and audio enhancement - Attention to detail - Ability to deliver high-quality audio Please include detailed project proposals in your application.

    $26 Average bid
    $26 Avg Bid
    13 bids

    We are looking for a reliable and detail-oriented podcast editor for ongoing daily work. We produce a short-form audio only podcast episode every weekday (5 days per week). Each episode is approximately 2–3 minutes long and consists of: • Intro audio • Main content (single speaker voice recording) • Outro audio Scope of work per episode: • Insert intro and outro audio files • Edit the voice recording to remove mistakes, pauses, stumbles, and unnecessary gaps • Clean and optimise audio for clarity and consistent volume • Export the final episode to our specified format (MP3) • Upload the completed file to our Dropbox folder What we are looking for: • Fast turnaround • High attention to detail • Consistent audio qual...

    $225 Average bid
    $225 Avg Bid
    21 bids

    We are looking for a reliable and detail-oriented podcast editor for ongoing daily work. We produce a short-form audio only podcast episode every weekday (5 days per week). Each episode is approximately 2–3 minutes long and consists of: • Intro audio • Main content (single speaker voice recording) • Outro audio Scope of work per episode: • Insert intro and outro audio files • Edit the voice recording to remove mistakes, pauses, stumbles, and unnecessary gaps • Clean and optimise audio for clarity and consistent volume • Export the final episode to our specified format (MP3) • Upload the completed file to our Dropbox folder What we are looking for: • Fast turnaround • High attention to detail • Consistent audio qual...

    $248 Average bid
    $248 Avg Bid
    21 bids

    I need a skilled audio engineer to isolate two female voices from a 37-minute M4A audio file with significant background noise (male voices). The task involves removing two male voices while retaining the clarity of the female voices for personal listening. Requirements: - Experience with audio editing and voice isolation - Proficiency in handling M4A files - Ability to isolate a voice from other overpowering voices Ideal Skills: - Familiarity with audio editing software (e.g., Audacity, Adobe Audition) - Attention to detail - Good ear for audio quality Please provide a sample of previous similar work and estimate the time required for completion.

    $73 Average bid
    $73 Avg Bid
    23 bids

    I have roughly seven hours of recorded interviews that need to be turned into a clean, text-based transcript for later research analysis. The files are far from studio quality—there is noticeable background noise in places and several different voices come in and out of each session—so automated tools are struggling. I therefore need the entire job completed manually by someone comfortable isolating overlapping speech, catching softer comments, and preserving the meaning of every utterance. Here is what I’m looking for: • A full, verbatim transcript delivered as either a Word document or Google Doc. • Clear identification of each speaker whenever the voice changes (simple labels such as “Interviewer,” “Participant 1,” etc. are fine). ...

    $19 / hr Average bid
    $19 / hr Avg Bid
    45 bids

    I am looking for an experienced Q-Sys programmer to set up an audio system for a recreation facility. Individual must be located in the Lower Mainland. Requirements: - Integrate microphones, aux inputs, amplifiers and speakers - Integrate Bluetooth into the system - Implement automatic gain control - Capable of building GUI for 2 control surfaces - "Page All" for entire facility and individual paging for 3 different zones Ideal Skills: - Expertise in Q-Sys programming - Experience with audio setups - Knowledge of audio processing features - Experience in building simple GUI for user control

    $36 / hr Average bid
    $36 / hr Avg Bid
    10 bids

    Senior C++ Audio Software Developer (GUI & Systems) Project: SQNT – A Next-Generation Live Performance Host Stack: C++, JUCE, Dear ImGui, Python API Role: Contract-to-Hire / Project-Based About the Project SQNT is a specialized, non-linear performance host designed to bridge the gap between hardware workflows (Elektron-style) and VST power. We are moving from a high-functioning prototype into a polished, commercial-ready release. We need a developer to lead the GUI overhaul and standardize our core codebase for a professional launch. The Role We are looking for a C++ developer with deep experience in audio software. You will be responsible for: GUI Transformation: Transitioning the current interface from Dear ImGui to a custom, high-performance, and high-contrast stage-ready UI ...

    $2155 Average bid
    $2155 Avg Bid
    43 bids

    I have several crystal-clear audio recordings that must be converted into polished, accurately punctuated text. Once we begin, I’ll share the exact lengths and preferred file format, but expect straightforward speech with minimal background noise. Here’s what I need from you: • A separate Word or Google Doc for each file, delivered in the same order I provide them. • Correct spelling, grammar, and punctuation throughout. • Speaker labels whenever more than one voice appears. • Optional two-minute timestamps—let me know if including them affects your turnaround. Because the audio quality is excellent, I’m aiming for near-perfect accuracy and a fast delivery window. When you reply, include your standard rate per audio minute and how m...

    $237 Average bid
    $237 Avg Bid
    45 bids

    WebRTC Call Recording Issues in Desktop Dialer (JsSIP) We are working on a desktop VoIP dialer built using JsSIP and WebRTC and are facing multiple issues related to audio call recording that need to be analyzed and fixed. Issues Observed 1. Conference Call Recording Controls o User-facing Start / Stop recording buttons do not work reliably during conference calls. o Recording sometimes does not include all participants or does not stop correctly. 2. Critical: Background Audio Recording o Audio recording sometimes continues or restarts without explicit user action or permission. o This is a privacy and browser policy compliance issue and must be handled strictly via user consent and proper MediaStream cleanup. 3. Recording Failure During Multiple Calls o When handling multiple or consecuti...

    $11 / hr Average bid
    $11 / hr Avg Bid
    9 bids

    We are looking for a reliable and detail-oriented podcast editor for ongoing daily work. We produce a short-form audio only podcast episode every weekday (5 days per week). Each episode is approximately 2–3 minutes long and consists of: • Intro audio • Main content (single speaker voice recording) • Outro audio Scope of work per episode: • Insert intro and outro audio files • Edit the voice recording to remove mistakes, pauses, stumbles, and unnecessary gaps • Clean and optimise audio for clarity and consistent volume • Export the final episode to our specified format (MP3) • Upload the completed file to our Dropbox folder What we are looking for: • Fast turnaround • High attention to detail • Consistent audio qual...

    $17 Average bid
    $17 Avg Bid
    39 bids

    Multilingual Voice Recording Project – Code-Switching Conversations Project Name: BV Project Type: Remote | Ongoing (Limited Slots per Locale) Project Overview Project BV is a multilingual speech data collection initiative designed to enhance Automatic Speech Recognition (ASR) systems for high-value multilingual call center scenarios, including financial services, healthcare, and telecommunications. The project focuses on collecting natural code-switching conversational audio, where speakers alternate between two languages within a single conversational turn. Scripts will be provided; however, natural delivery, fluency, and context-appropriate language switching are essential. Language Requirements Primary Language (Native level – one required): Spanish (esES) ...

    $31 Average bid
    $31 Avg Bid
    6 bids

    Saya memiliki sebuah album musik ber-genre Pop yang hanya tersedia di format vinyl. Rekaman ini terdengar banyak static noise dan saya ingin memulihkannya tanpa menghilangkan karakter asli piringannya. Tolong gunakan software editing audio standar industri (Izotope, Cedar, atau setara) dan teknik restorasi presisi agar setiap detail diproses dengan hati-hati. Prioritas saya adalah mendapatkan hasil akhir yang bersih, bebas statis, tetap hangat, dan setia pada sumber aslinya. Ruang lingkup: • Hilangkan static noise tanpa menekan dinamika atau menipiskan frekuensi tinggi. • Jaga transien, ambiance, dan nuansa analog khas vinyl. • Lakukan pemeriksaan fase, keseimbangan stereo, serta normalisasi level secara musikal. Saya membutuhkan: 1. File master WAV 24-bit/96 kHz a...

    $15 / hr Average bid
    $15 / hr Avg Bid
    1 bids

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