Audio laboratory
Compare embedded platforms, native browser playback and generated stereo tones while recording system audio and source context.
Embedded from SoundCloud · External media and privacy terms apply.
Exercise 01 · Playlist and waveform
A playlist of launch, landing and spacecraft sounds presented in SoundCloud's interactive waveform player.
Capture a selected clip while preserving the visible track identity, player state and audible event.
Embedded from Spotify · Playback availability may vary by region or account.
Exercise 02 · Long-form speech
A podcast episode with continuous speech, a long timeline and platform-specific controls.
Record a precisely defined spoken excerpt and verify that voice remains clear and uninterrupted.
Left and right channel test
The tone plays first on the left channel and then on the right.
Exercise 03 · Native HTML audio
A short public-domain Ogg file played with the browser's native audio controls.
Verify that a recording preserves separate left and right channels without folding them incorrectly into mono.
Browser-generated tone sequence
Plays 440 Hz on the left, 660 Hz in the center and 880 Hz on the right. Nothing is downloaded or streamed.
Ready. The sequence lasts about three seconds.
Exercise 04 · Web Audio API
A deterministic sequence produced inside the page, independent of a media file or external platform.
Confirm that the capture environment records audio generated directly by the browser and preserves stereo position.
Review the result
A recording should connect what was heard to its source, player state and captured interval.