# Audio Noise Reduction API

*/Software/Audio_Noise_Reduction_API*

## Solution Overview

This headless API ingests raw, single-channel or multi-channel WAV and FLAC files to output dialogue-isolated audio stems. It applies a deep neural network to map non-stationary background interference, such as wind shear, HVAC hum, and street traffic, and subtracts it without introducing phase distortion or vocal artifacting. The final outcome is a normalized, broadcast-ready audio track with a strictly defined noise floor.

Automated transcription engines, autonomous video editing agents, and programmatic podcast hosting platforms consume this API to standardize incoming user-generated content. These systems routinely fail or hallucinate when processing audio with inconsistent signal-to-noise ratios. Passing raw user uploads through the API guarantees a clean acoustic signal for downstream speech-to-text models and consumer playback, eliminating the need for manual audio engineering.

Operating as a pure headless SaaS primitive, the API pulls raw audio blobs directly from AWS S3 or Google Cloud Storage buckets via signed URLs. It executes the isolation workloads on GPU-accelerated cloud infrastructure and pushes the cleaned stems back to the client via webhooks. It sits entirely below the application layer, serving as an invisible preprocessing step for content moderation agents, automated transcribers, and digital voice-cloning pipelines.

## Headless Saas Data Model

**Entities**:
- Name: IsolationJob · Description: An asynchronous audio processing task that extracts dialogue and reduces noise
- Name: Workspace · Description: The tenant container for API keys, usage limits, and audio resources
- Name: AudioTrack · Description: A raw or processed audio blob residing in S3 or GCS
- Name: AcousticProfile · Description: Configuration rules for noise floor, normalization, and phase handling
- Name: WebhookTarget · Description: An endpoint that receives stem completion payloads from the pipeline
**Relations**:
- To: Workspace · From: IsolationJob · Label: belongs to workspace · Cardinality: many-to-many
- To: AudioTrack · From: IsolationJob · Label: processes input track · Cardinality: many-to-many
- To: AudioTrack · From: IsolationJob · Label: generates output track · Cardinality: many-to-many
- To: AcousticProfile · From: IsolationJob · Label: applies acoustic profile · Cardinality: many-to-many
- To: Workspace · From: AudioTrack · Label: owned by workspace · Cardinality: many-to-many
- To: Workspace · From: AcousticProfile · Label: owned by workspace · Cardinality: many-to-many
- To: Workspace · From: WebhookTarget · Label: notifies workspace · Cardinality: many-to-many
**Tenant Anchor**: Workspace
**Primary Resource**: IsolationJob

## Api Definition

**Protocols**:
- REST
- SDK
- MCP
- Webhooks
**Consumed By**:
- [Transcription Agent](/Agents/Transcription_Agent)
- [Video Editing Agent](/Agents/Video_Editing_Agent)
- [Content Moderation Agent](/Agents/Content_Moderation_Agent)
- [Voice Cloning Agent](/Agents/Voice_Cloning_Agent)
**Integrations**:
- [AWS S3](/Products/AWS_S3)
- [Google Cloud Storage](/Products/Google_Cloud_Storage)
**Consumption Model**: An agent calls the REST API to submit an IsolationJob with a signed S3 URL, then listens to a WebhookTarget for the final processed stem.
**Workflow Wrappers**:
- Name: Run Isolation Pipeline · Wraps: Registers external storage tracks, executes the noise reduction job, and pushes the webhook.
- Name: Batch Normalize Audio · Wraps: Applies an acoustic profile across multiple raw audio tracks concurrently for standardized playback.

## Api Function Cascade

**Ai Role**: As a headless SaaS primitive, AI-driven acoustic profiling and noise separation execute completely straight-through on raw audio inputs, processing and returning pristine stems to consuming agents without any human intervention.
**Cascade**:
- Kind: Code · Note: Fetches raw audio files from the provided AWS S3 or Google Cloud Storage URLs. · Step: Ingest Signed Storage Tracks · Verb: ingest · Realizes: Ingest Audio Media · Oversight: none
- Kind: Generative · Note: One-shot ML inference to map background noise versus primary speech patterns. · Step: Profile Acoustic Noise · Verb: classify · Realizes: Analyze Acoustic Characteristics · Oversight: none
- Kind: Code · Note: Applies deterministic DSP and model outputs to extract the clean audio stem. · Step: Execute Isolation Pipeline · Verb: separate · Realizes: Isolate Audio Signals · Oversight: none
- Kind: Code · Note: Adjusts track levels and applies standardized acoustic profiles concurrently. · Step: Normalize Final Stems · Verb: normalize · Realizes: Standardize Audio Quality · Oversight: none
- Kind: Code · Note: Posts the processed asset destination back to the listening agent. · Step: Emit Completion Webhook · Verb: emit · Realizes: Notify Consuming Services · Oversight: none
**Optimizes**:
- [Signal-to-Noise Ratio](/Metrics/Signal-to-Noise_Ratio)
- [Speech Intelligibility Score](/Metrics/Speech_Intelligibility_Score)
- [Processing Latency](/Metrics/Processing_Latency)
- [First-Pass Match Rate](/Metrics/First-Pass_Match_Rate)

## Headless Saas Representative Offer

**Warranty**: Guarantees 99.9% API endpoint uptime and provides automatic account credits for any jobs that fail to complete or return corrupted audio stems.
**Price Band**: Roughly $0.01 to $0.05 per minute of audio processed, depending on the isolation complexity and algorithm used.
**Pricing Kind**: UsageMeter
**Deliverables**:
- Isolated audio stems delivered to external storage (AWS S3/GCS)
- Batch-normalized audio tracks
- Asynchronous webhook notifications for job completion
- REST API, SDK, and MCP access credentials
**Delivery Mode**: Instant self-serve provisioning where the consuming agent generates an API key and is metered automatically for each isolation job submitted via REST or MCP.
**Business Function**: ProvideService
**Agent Checkout Support**:
- agentic-commerce-protocol
- stored-credential

## Headless Saas Crud Surface

**Auth Model**: API Key
**Endpoints**:
- GET /isolation-jobs — list isolation jobs
- POST /isolation-jobs — enqueue a new isolation job
- GET /isolation-jobs/{id} — fetch a specific isolation job
- PATCH /isolation-jobs/{id} — update an isolation job
- POST /isolation-jobs/{id}/cancel — cancel a running isolation job
- GET /workspaces — list workspaces
- POST /workspaces — create a new workspace
- GET /workspaces/{id} — fetch a specific workspace
- PATCH /workspaces/{id} — update a workspace
- GET /audio-tracks — list audio tracks
- POST /audio-tracks — register a new audio track
- GET /audio-tracks/{id} — fetch a specific audio track
- PATCH /audio-tracks/{id} — update an audio track
- GET /acoustic-profiles — list acoustic profiles
- POST /acoustic-profiles — create a new acoustic profile
- GET /acoustic-profiles/{id} — fetch a specific acoustic profile
- PATCH /acoustic-profiles/{id} — update an acoustic profile
- GET /webhook-targets — list webhook targets
- POST /webhook-targets — create a new webhook target
- GET /webhook-targets/{id} — fetch a specific webhook target
- PATCH /webhook-targets/{id} — update a webhook target
**Multitenancy**: Row-level isolation
**Webhook Events**:
- isolation_job.completed
- isolation_job.failed
- audio_track.ingested

## Headless Saas Erd

```mermaid
erDiagram
    IsolationJob }o--o{ Workspace : "belongs to workspace"
    IsolationJob }o--o{ AudioTrack : "processes input track"
    IsolationJob }o--o{ AudioTrack : "generates output track"
    IsolationJob }o--o{ AcousticProfile : "applies acoustic profile"
    AudioTrack }o--o{ Workspace : "owned by workspace"
    AcousticProfile }o--o{ Workspace : "owned by workspace"
    WebhookTarget }o--o{ Workspace : "notifies workspace"

    IsolationJob {
        UUID id PK
        UUID workspaceId FK
        UUID inputTrackId FK
        UUID outputTrackId FK
        UUID profileId FK
        VARCHAR status
        TIMESTAMP completedAt
    }
    Workspace {
        UUID id PK "tenant key"
        VARCHAR name
        VARCHAR apiToken
        BOOLEAN isActive
    }
    AudioTrack {
        UUID id PK
        UUID workspaceId FK
        VARCHAR storageUrl
        VARCHAR codec
        DECIMAL durationSeconds
    }
    AcousticProfile {
        UUID id PK
        UUID workspaceId FK
        DECIMAL targetNoiseFloorDb
        DECIMAL normalizationLufs
        BOOLEAN preventPhaseDistortion
    }
    WebhookTarget {
        UUID id PK
        UUID workspaceId FK
        VARCHAR endpointUrl
        VARCHAR signatureSecret
        JSONB eventTypes
    }
```

## Neighborhood

### Composed into

- [Podcast Production as a Service](/Services/Podcast_Production_as_a_Service) — composes · Services

### Optimizes

- [Signal-to-Noise Ratio](/Metrics/Signal-to-Noise_Ratio) — optimizes · Metrics
- [Speech Intelligibility Score](/Metrics/Speech_Intelligibility_Score) — optimizes · Metrics
- [First-Pass Match Rate](/Metrics/First-Pass_Match_Rate) — optimizes · Metrics
- [Processing Latency](/Metrics/Processing_Latency) — optimizes · Metrics

### What it uses

- [AWS S3](/Products/AWS_S3) — uses · Products
- [Google Cloud Storage](/Products/Google_Cloud_Storage) — uses · Products

### Who consumes this

- [Content Moderation Agent](/Agents/Content_Moderation_Agent) — consumed by · Agents
- [Transcription Agent](/Agents/Transcription_Agent) — consumed by · Agents
- [Video Editing Agent](/Agents/Video_Editing_Agent) — consumed by · Agents
- [Voice Cloning Agent](/Agents/Voice_Cloning_Agent) — consumed by · Agents

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