Browser-based · No install · Works offline

Know if your audio
will pass or fail
before you submit.

VoiceAnalyzer checks your recordings against ACX, Broadcast, Podcast, YouTube and Spotify standards in seconds. Drop your file. Get the answer.

▶ Try Free for 10 Minutes See Pricing →
✓ITU-R BS.1770-4 compliant
✓ACX noise floor check
✓RT60 room acoustics
✓No audio uploaded anywhere

The problem

ACX rejections.
Client revisions.
Guessing at specs.

Most VO artists submit files without knowing if they actually meet the technical requirements. The feedback comes back days later.

📉

Noise floor above −60 dBFS

The most common ACX rejection. Most home studios fail it without knowing.

📢

Room reverb audible to clients

RT60 above 0.5s makes voice sound distant. Hard to hear on your own monitors.

🔴

True Peak exceeding platform limits

Codec processing pushes peaks over the limit after delivery. Invisible until it clips.

VoiceAnalyzer catches all of this — before you submit.

Drop your audio file on it. In under 10 seconds you get every measurement that matters, with plain-English explanations and exact steps to fix each problem.

No software to install. No account. Your audio never leaves your browser.

LUFS True Peak Noise Floor RT60 SNR Clipping Dynamic Range ACX Compliance EQ Analysis WAV Export

What it measures

Everything your clients and platforms check.

Built to broadcast standard. Every measurement comes with context, not just a number.

📊

ITU-R BS.1770-4 Loudness

Integrated LUFS, True Peak, and Loudness Range using the same algorithm as Spotify, Apple Music, YouTube and broadcast networks. K-weighted, dual-gated.

BROADCAST STANDARD
🔇

Noise Floor

Measures the actual noise floor of your recording in dBFS — the number ACX checks. Shows exactly how far above or below the −60 dBFS threshold you are.

ACX CRITICAL
🏠

RT60 Room Acoustics

Detects loud-to-silence transitions in your recording and measures actual room decay time. Tells you if your space is adding reverb that clients will hear.

ACX REQUIRED
🎛️

8-Band Parametric EQ

Real-time EQ heard during playback. Apply EQ button loads suggested corrections automatically. Export processed audio as 16-bit WAV.

LIVE PLAYBACK
✅

Compliance Checker

One-click pass/fail grid against ACX, Podcast, Broadcast EBU R128, YouTube and Spotify. See exactly which requirements you meet and which you don't.

5 STANDARDS
📋

Issues & Fixes Report

Every problem detected comes with a plain-English explanation, specific dB values, and numbered repair steps. Free plugin recommendations included.

ACTIONABLE

Compliance checker

Check against any standard in one click.

Select the platform you're submitting to and get an instant pass/fail result.

ACX Audiobook
RMS −23 to −18 dBFS
Noise floor below −60 dBFS
True Peak below −3 dBTP
PASS / FAIL
Podcast
LUFS −19 to −16
True Peak below −1 dBTP
SNR above 60 dB
PASS / FAIL
Broadcast EBU R128
LUFS −23 ±1 LU
LRA up to 20 LU
True Peak below −1 dBTP
PASS / FAIL
YouTube
LUFS −14 target
True Peak below −1 dBTP
SNR above 50 dB
PASS / FAIL
Spotify / Streaming
LUFS −16 to −14
True Peak below −1 dBTP
LRA up to 9 LU
PASS / FAIL

Pricing

Try free. Buy once.

No subscription. No recurring fees. One purchase, yours forever.

Free Demo
$0
10-minute trial. No account needed.
  • Full analysis — all measurements
  • ACX & platform compliance checker
  • Issues & Fixes report
  • Parametric EQ with live playback
  • WAV export disabled
  • 10-minute session limit
Try Free Demo
Full Version
$29
One-time purchase. No subscription.
  • Everything in the free demo
  • Unlimited analysis sessions
  • Export processed WAV (EQ + Limiter)
  • Peak Limiter with ceiling control
  • Works completely offline
  • All future updates included
Buy Now — $29

Secure payment via Stripe · Instant download after purchase · Single HTML file

From voice talent

What VO artists are saying.

★★★★★

"I've been submitting to ACX for two years and never knew my noise floor was the reason for rejections. This caught it in 5 seconds."

Sarah M.
Audiobook Narrator
★★★★★

"The RT60 reading alone is worth it. Found out my closet studio had reverb I couldn't hear on headphones. Client could though."

James T.
Commercial VO Artist
★★★★★

"No install, no fuss. Drop the file and it tells you exactly what's wrong and how to fix it. This should be standard kit for every home studio."

Lisa R.
Podcast Host & VO Talent

Questions

Frequently asked.

Does my audio get uploaded anywhere? ▼
No. All processing happens entirely in your browser using the Web Audio API. Your audio files are never sent to any server. Everything runs locally on your machine.
What format does it accept? ▼
MP3, WAV, FLAC, M4A, AAC, OGG, AIFF and most other common audio formats. If your browser can play it, VoiceAnalyzer can analyze it.
Does it work without internet? ▼
Yes. After the initial page load the app works completely offline. No internet connection required for analysis, EQ, or export.
How accurate is the ACX noise floor measurement? ▼
The noise floor is measured using the quietest 10th percentile of 20ms frames across your recording — the same approach used in professional audio metering tools. It gives you an accurate reading of your actual noise floor, not just peak noise.
What do I get after purchasing? ▼
A single HTML file you download and open in any browser. No install, no activation, no account required. Works on Windows, Mac and Linux.
Do I get updates? ▼
Yes — all future updates are included with your purchase. New standards, new measurements, and improvements are sent to you at no extra charge.

Get started today

Stop guessing.
Start knowing.

Try the free 10-minute demo right now. No signup. No install. Just drop your audio file on it.

▶ Try Free Demo Buy Full Version — $29