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spectrum analyzer shows nothing on safari

Ask By Jenna K.2,837 views

I allow the mic but the spectrum analyzer stays flat in safari on mac

Brand
Apple
Model
MacBook Air
Connection
Built-in Microphone
System
macOS 15
Browser
Safari 18
Sample Rate
48 kHz
Output Channels
2 channels
Using Sound Tester ToolsMac
Tool used in this discussionSpectrum AnalyzerSee any sound split into its frequencies live
Open Free Tool
Short Answer

Safari needs microphone permission for the site and sometimes a click to start audio. Check Settings, Websites, Microphone.

Verified By Sound TestVerified By Sound Test
Harvey Finch
Harvey FinchAudio Team
Spectrum Analyzer Lead · 9+ years experience · Answered Mar 6, 2026

The page needs permission and a user click to start audio.

After you make the change, play the Spectrum Analyzer again to confirm the result. If the problem is still there, add your device, browser and what you tried in the replies so the team can narrow it down.

Step By Step Fix
  1. Open Safari, Settings, Websites, Microphone and allow
  2. Reload the page and click Start
  3. Check System Settings, Privacy, Microphone
  4. Make sure sound is playing
Sources
  1. Apple Support

Checked by Elise Dubois on . How we verify answers

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Community Replies 1

  • Archie WoodCommunity Member

    Allow in Websites fixed mine. I checked it again with the Spectrum Analyzer afterwards to be sure.

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Hearing & AnalysisMic TestCheck your microphone input with a live level meter
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Harvey Finch
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Harvey Finch

Spectrum Analyzer Lead at Sound Test

Harvey Finch is the Spectrum Analyzer Lead on the Sound Tester Audio Team. Audits real-time fast Fourier transform (FFT) spectrum mapping and audio visualizer rendering accuracy. Contributes open-source digital signal processing tips on GitHub. On Sound Tester he answers Spectrum Analyzer questions, including flat displays, permissions and reading peaks, and reviews how each result is drawn.

FFT analysisspectrum accuracyaudio visualizers
  • 10 answers on Sound Test
  • 9+ years experience
  • Reviewed by Elise Dubois
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The Audio Team Behind These Answers

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Brandon VanceBrandon VanceAudio & Acoustic Performance LeadXavier CruzXavier CruzFrequency Sweep SpecialistDiana ChenDiana ChenHearing Test ArchitectAlistair CrossAlistair CrossHeadphone Benchmark LeadImogen BlakeImogen BlakeBinaural Beats EngineerCallum SterlingCallum SterlingSurround Sound AuditorGemma GallagherGemma GallagherTone Generator ValidatorRishabh SharmaRishabh SharmaAudio DSP Engineer

Each answer is written by the specialist closest to the topic and checked by a second team member. How we verify answers

Answers are free general guidance from the Sound Tester Audio Team and community. They are not medical advice. For hearing loss, ringing or ear pain, see a doctor or audiologist. Opening a device can void its warranty, so check the maker's support first for hardware faults.

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