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WhitePrint AudioEngine

aimastering.tech

From $54/mo Free plan WebAPI
Visit aimastering.tech
Spec score 8.3 #10 of 50 in AI mastering tools

What it is

WhitePrint AudioEngine provides AI-powered audio analysis and mastering through a web interface and API, returning analysis data, mastered audio, or both. Its BS.1770-4 analysis measures LUFS, true peak, loudness range, crest factor, spectral balance, and stereo width. Three independent AI models make mastering recommendations, and users can inspect each model's advice and the reasoning behind the consensus. The mastering chain has 14 hybrid DSP stages, bypassed by default unless the AI directs otherwise. Users can compare original and mastered audio with an A/B player, inspect metric changes, and download a WAV file. WAV and FLAC inputs are supported, and direct processing can use links from Google Drive, Dropbox, OneDrive, Amazon S3, and Google Cloud Storage; Suno and SoundCloud are also listed as URL sources. API routes support full mastering, analysis-only, deliberation-only, and DSP-only tasks. Submitted audio is deleted within 24 hours after job completion and is not used to train AI models. The free plan includes three WAV masters monthly and seven days of analysis history. Paid plan prices range from $54 a month to $5,506 a month.

Spec sheet

What it does
WhitePrint AudioEngine is a web platform that analyzes audio, uses AI deliberation to choose mastering settings, applies DSP, and returns a WAV master.Read 15 Oct 2026 · aimastering.tech
Intended users
The maker describes Standard as intended for producers who master regularly and Pro as intended for professional engineers and labels.Read 8 Oct 2026 · aimastering.tech
Integrations
The API is positioned for applications, DAW plugins, distribution platforms, and CI/CD pipelines.Read 15 Oct 2026 · aimastering.tech
Security
The privacy policy says data is encrypted in transit with TLS 1.3 and at rest with AES-256, and API keys are hashed after creation.Read 8 Oct 2026 · aimastering.tech
Support
The Standard plan includes email support, Pro includes priority support, API includes dedicated support and an SLA, and White Label includes 24/7 dedicated support with a 99.9% SLA.Read 8 Oct 2026 · aimastering.tech
AI deliberation
Three independent AI models provide mastering recommendations, and users can see each model’s recommendations and the reasoning behind the consensus.Read 8 Oct 2026 · aimastering.tech
Analysis
Its analysis stage measures BS.1770-4 loudness, LUFS, true peak, loudness range, crest factor, spectral balance, stereo width, and song sections.Read 15 Oct 2026 · aimastering.tech
API authentication
API requests use a Bearer key with the wpk_ prefix in the Authorization header.Read 15 Oct 2026 · aimastering.tech
API errors
Documented errors include invalid parameters, authentication failure, usage limits, unreachable or invalid audio, server errors, and a five-minute processing timeout.Read 15 Oct 2026 · aimastering.tech
API inputs
The mastering endpoint requires a direct audio URL and route, with optional LUFS, true-peak, and manual DSP parameters.Read 15 Oct 2026 · aimastering.tech
API responses
Full and DSP-only routes return WAV data, while analysis-only and deliberation-only routes return JSON.Read 15 Oct 2026 · aimastering.tech
API routes
The public API supports full mastering, analysis-only, deliberation-only, and DSP-only routes.Read 15 Oct 2026 · aimastering.tech
API use
The REST API supports full mastering, analysis-only, deliberation-only, and DSP-only routes, and the maker describes use in applications, DAW plugins, distribution platforms, and CI/CD pipelines.Read 8 Oct 2026 · aimastering.tech
Audio retention
Submitted audio is temporarily stored during processing, deleted within 24 hours after job completion, and not used to train AI models.Read 8 Oct 2026 · aimastering.tech
Cloud inputs
Audio can be fetched from Google Drive, Dropbox, OneDrive, Amazon S3, or Google Cloud Storage URLs.Read 15 Oct 2026 · aimastering.tech
Cloud integrations
The service accepts links from Google Drive, Dropbox, OneDrive, Amazon S3, and Google Cloud Storage for direct processing.Read 8 Oct 2026 · aimastering.tech
Data handling
The architecture page states that files are deleted immediately after processing and are not kept in persistent storage.Read 15 Oct 2026 · aimastering.tech
Deliberation transparency
The interface exposes each model recommendation, the consensus result, rationale, and confidence information.Read 15 Oct 2026 · aimastering.tech
Developer documentation
Documentation includes a quickstart, endpoint reference, code examples link, and a technical specification.Read 15 Oct 2026 · aimastering.tech
DSP chain
The mastering engine advertises a 14-stage hybrid chain covering gain, EQ, compression, saturation, stereo processing, limiting, and dithering.Read 15 Oct 2026 · aimastering.tech
DSP mastering
The mastering chain uses 14 hybrid DSP stages, with processing stages bypassed by default unless the AI instructs otherwise.Read 8 Oct 2026 · aimastering.tech
Free tier limit
The Free plan includes three WAV masters per month and seven days of analysis history.Read 8 Oct 2026 · aimastering.tech
Independent API details
The GitHub project documents POST endpoints for analysis, full mastering, deliberation-only processing, and explicit-parameter mastering.Read 15 Oct 2026 · github.com
Independent architecture description
The GitHub project describes the integrated pipeline as analysis, three-model deliberation, and a 14-stage analog-modeled DSP chain.Read 15 Oct 2026 · github.com
Independent deployment requirements
The GitHub project lists Python 3.10+, Node.js 18+, Google Cloud authentication, and API keys for OpenAI, Anthropic, and Google services.Read 15 Oct 2026 · github.com
Independent documentation depth
The GitHub project includes setup steps, Swagger UI availability, API examples, parameter descriptions, and DSP-stage explanations.Read 15 Oct 2026 · github.com
Independent license
The GitHub integration project is marked MIT licensed, but the hosted WhitePrint AudioEngine service itself is not declared open source on its maker pages.Read 15 Oct 2026 · github.com
Independent repository activity
The GitHub repository page shows one star, zero forks, and two commits.Read 15 Oct 2026 · github.com
Independent repository origin
A public GitHub project says it integrates four previously separate WhitePrint AudioEngine microservices into one deployable application.Read 15 Oct 2026 · github.com
Infrastructure
The technical specification describes stateless services deployed on Google Cloud Run with Cloud Storage and Supabase components.Read 15 Oct 2026 · aimastering.tech
Limit: API cost
API access is restricted to a high-priced plan shown at $2,196 per month or $2,745 per month without the annual discount.Read 15 Oct 2026 · aimastering.tech
Limit: API quota
The API plan includes 1,000 calls per month and documents $0.07 per-call overage.Read 15 Oct 2026 · aimastering.tech
Limit: no reference matching stated
The maker feature pages describe analysis and section processing but do not state reference-track matching or stem mastering.Read 15 Oct 2026 · aimastering.tech
Multi-model AI
Three independent models from OpenAI, Anthropic, and Google propose mastering parameters and a consensus process produces the final values.Read 15 Oct 2026 · aimastering.tech
Neutral defaults
DSP stages start bypassed or neutral and are activated only when the AI-directed parameters call for processing.Read 15 Oct 2026 · aimastering.tech
No native apps listed
The maker pages present WhitePrint as a web application and API and do not list Windows, macOS, Linux, iOS, Android, or browser-extension clients.Read 15 Oct 2026 · aimastering.tech
Other URL sources
The About page also lists Suno and SoundCloud among supported URL platforms.Read 8 Oct 2026 · aimastering.tech
Output and comparison
Users can compare original and mastered audio with an A/B player, inspect before/after metrics, and download WAV output.Read 15 Oct 2026 · aimastering.tech
Results
Users can compare the original and mastered audio with an A/B player, inspect before-and-after metrics, and download a WAV file.Read 8 Oct 2026 · aimastering.tech
Runtime stack
The listed implementation stack includes Python 3.12, FastAPI, NumPy, SciPy, Spotify Pedalboard/JUCE, Next.js, React, and Tailwind CSS.Read 15 Oct 2026 · aimastering.tech
Section processing
Different mastering parameter sets can be applied to detected intro, verse, chorus, bridge, and outro sections.Read 15 Oct 2026 · aimastering.tech
Security controls
The specification states that private IP and metadata-server requests are blocked for SSRF protection and that services use OIDC authentication internally.Read 15 Oct 2026 · aimastering.tech

Plans and prices

Free Free 3 WAV masters/month · BS.1770-4 analysis · 3-model deliberation · section mastering · A/B player · metrics dashboard Read 15 Oct 2026 · aimastering.tech
Standard $54 a month 30 WAV masters/month · custom LUFS/true-peak targets · 90-day history · email support Read 15 Oct 2026 · aimastering.tech
Standard $648 a year billed annually; save $156 30 WAV masters/month · custom LUFS/true-peak targets · 90-day history · email support Read 15 Oct 2026 · aimastering.tech
Pro $1,092 a month Unlimited masters · DSP overrides · batch up to 10 tracks · priority queue · unlimited history · priority support Read 15 Oct 2026 · aimastering.tech
API $2,196 a month REST API · webhooks · 1,000 calls/month · unlimited batch · custom LLM selection · SLA · SSO/team management Read 15 Oct 2026 · aimastering.tech
White Label $5,506 a month Custom brand UI · custom domain · unlimited API calls · dedicated infrastructure · custom DSP chain · custom prompts · 24/7 support · 99.9% SLA Read 15 Oct 2026 · aimastering.tech
Pro $13,104 a year billed annually; save $3,276 Unlimited masters · DSP overrides · batch up to 10 tracks · priority queue · unlimited history · priority support Read 15 Oct 2026 · aimastering.tech
API $26,352 a year billed annually; save $6,588 REST API · webhooks · 1,000 calls/month · unlimited batch · custom LLM selection · SLA · SSO/team management Read 15 Oct 2026 · aimastering.tech
White Label $66,072 a year billed annually; save $16,524 Custom brand UI · custom domain · unlimited API calls · dedicated infrastructure · custom DSP chain · custom prompts · 24/7 support · 99.9% SLA Read 15 Oct 2026 · aimastering.tech

Every WhitePrint AudioEngine plan and price →

Strong points and limits

Strong points

  • Measures six audio characteristics in analysis.
  • Shows recommendations from three AI models.
  • Allows A/B listening and WAV downloads.
  • Free plan includes three WAV masters monthly.

Limits

  • Free plan has seven days of analysis history.
  • Standard plan is $54 a month.
  • Submitted audio is temporarily stored during processing.

Who it suits

AudioEngine suits people seeking browser-based audio analysis and mastering, or developers integrating those operations through an API. The maker identifies Standard for regular mastering and Pro for professional engineers and labels.

Verdict

AudioEngine exposes analysis measurements, model recommendations, and mastering results for review, with web and API options. Compare the plan allowances and API needs with your intended workflow.

Where Specifiction places it

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