Speaker Test

Generate a test tone to verify audio output (frequency, amplitude, and routing).

Overview

Speaker Test generates a continuous tone. You can change the frequency and amplitude, pick an output route, and watch a waveform visualization.

Speaker Test overview.

Playback: tap to play/stop.

Frequency and amplitude sliders with presets.

Technical Details: sample rate, latency, current output, and audio session category.

Scroll to read the instructions and session details.

Table Of Contents

• Main Sections
• Playback
• Output
• Frequency
• Amplitude
• Technical Details
• Safety Tips
• Notes And Limitations

Main Sections

Speaker Test is a single scrolling screen with:

• A Waveform visualization.
• A Playback panel (play/stop + status cards).
• An Output selector (when alternate routes exist).
• A Frequency slider with presets.
• An Amplitude slider.
• A Technical Details panel (audio session values).

Playback

Tap the large play button to start the test tone. Tap again to stop.

The status cards summarize:

• Status (Active/Inactive)
• Mute (Muted/Unmuted)
• Output (Built-in speaker, headphones, Bluetooth, etc.)

Output

When multiple outputs are available, use the Output menu to select where audio should play.

Frequency

Use the Frequency slider to sweep from 20 Hz to 20 kHz. Preset buttons (for example 250 Hz, 500 Hz, 1 kHz) make it easy to jump to common test tones.

Amplitude

Amplitude controls how loud the generated tone is inside the app's audio engine.

Technical Details

Technical Details shows values from the current audio session, such as:

• Sample rate
• Output latency
• Current output device
• Output type
• Audio session category
• Output volume

Safety Tips

• Start with low amplitude and increase gradually.
• If you hear rattling, distortion, or buzzing, stop the tone and reduce volume.
• Be cautious with headphones and external speakers.

Notes And Limitations

• Available output routes depend on what is connected (Bluetooth, AirPlay, wired headphones, etc.).
• iOS controls overall system volume; the amplitude slider is not a replacement for the system volume buttons.
• If you don't hear audio, verify:
  • The device volume is up and Silent Mode is off (if applicable).
  • The selected output route is the one you expect (for example, unplug/reconnect headphones or Bluetooth).