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Phase-o-scope

Try the live page: load any number of audio tracks into the player, and click a track to play. Or see a quick YouTube walkthrough.

Back when I was a full-time broadcaster and spent my evenings in a windowless studio, one source of both fun and useful information was the "phase-o-scope," a single-purpose oscilloscope that worked only in "xy mode", showing the stereo spread of an audio signal by drawing Lissajous patterns.

The pattern for in-phase audio will group roughly around the line y=x (the diagonal line from top right to bottom left of the display), although tracks with a broader stereo signal will deviate more. A pattern oriented around y=-x (top left to bottom right) is a sign of phase cancellation.

In-phase audioOut-of-phase audio

The "extreme green" look is a tribute to the glowing green CRT display typical of an old oscilloscope.

Phase-o-scope is an ongoing project written in React.js. The oscilloscope portion is hand-coded using the html Canvas and Web Audio APIs, while the waveform and spectrogram at the bottom of the page use wavesurfer.js.

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Phase-o-scope
Try the live page: load any number of audio tracks into the player, and click a track to play. Or see a quick YouTube walkthrough.
Back when I was a full-time broadcaster and spent my evenings in a windowless studio, one source of both fun and useful information was the "phase-o-scope," a single-purpose oscilloscope that worked only in "xy mode", showing the stereo spread of an audio signal by drawing Lissajous patterns.
The pattern for in-phase audio will group roughly around the line y=x (the diagonal line from top right to bottom left of the display), although tracks with a broader stereo signal will deviate more. A pattern oriented around y=-x (top left to bottom right) is a sign of phase cancellation.
In-phase audioOut-of-phase audio
The "extreme green" look is a tribute to the glowing green CRT display typical of an old oscilloscope.
Phase-o-scope is an ongoing project written in React.js. The oscilloscope portion is hand-coded using the html Canvas and Web Audio APIs, while the waveform and spectrogram at the bottom of the page use wavesurfer.js.
About
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Phase-o-scope
Try the live page: load any number of audio tracks into the player, and click a track to play. Or see a quick YouTube walkthrough.
Back when I was a full-time broadcaster and spent my evenings in a windowless studio, one source of both fun and useful information was the "phase-o-scope," a single-purpose oscilloscope that worked only in "xy mode", showing the stereo spread of an audio signal by drawing Lissajous patterns.
The pattern for in-phase audio will group roughly around the line y=x (the diagonal line from top right to bottom left of the display), although tracks with a broader stereo signal will deviate more. A pattern oriented around y=-x (top left to bottom right) is a sign of phase cancellation.
In-phase audioOut-of-phase audio
The "extreme green" look is a tribute to the glowing green CRT display typical of an old oscilloscope.
Phase-o-scope is an ongoing project written in React.js. The oscilloscope portion is hand-coded using the html Canvas and Web Audio APIs, while the waveform and spectrogram at the bottom of the page use wavesurfer.js.
About
Oscilloscope audio phase tool, written in React
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Phase-o-scope
Try the live page: load any number of audio tracks into the player, and click a track to play. Or see a quick YouTube walkthrough.
Back when I was a full-time broadcaster and spent my evenings in a windowless studio, one source of both fun and useful information was the "phase-o-scope," a single-purpose oscilloscope that worked only in "xy mode", showing the stereo spread of an audio signal by drawing Lissajous patterns.
The pattern for in-phase audio will group roughly around the line y=x (the diagonal line from top right to bottom left of the display), although tracks with a broader stereo signal will deviate more. A pattern oriented around y=-x (top left to bottom right) is a sign of phase cancellation.
In-phase audioOut-of-phase audio
The "extreme green" look is a tribute to the glowing green CRT display typical of an old oscilloscope.
Phase-o-scope is an ongoing project written in React.js. The oscilloscope portion is hand-coded using the html Canvas and Web Audio APIs, while the waveform and spectrogram at the bottom of the page use wavesurfer.js.
About
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Phase-o-scope
Try the live page: load any number of audio tracks into the player, and click a track to play. Or see a quick YouTube walkthrough.
Back when I was a full-time broadcaster and spent my evenings in a windowless studio, one source of both fun and useful information was the "phase-o-scope," a single-purpose oscilloscope that worked only in "xy mode", showing the stereo spread of an audio signal by drawing Lissajous patterns.
The pattern for in-phase audio will group roughly around the line y=x (the diagonal line from top right to bottom left of the display), although tracks with a broader stereo signal will deviate more. A pattern oriented around y=-x (top left to bottom right) is a sign of phase cancellation.
In-phase audioOut-of-phase audio
The "extreme green" look is a tribute to the glowing green CRT display typical of an old oscilloscope.
Phase-o-scope is an ongoing project written in React.js. The oscilloscope portion is hand-coded using the html Canvas and Web Audio APIs, while the waveform and spectrogram at the bottom of the page use wavesurfer.js.
About
Oscilloscope audio phase tool, written in React
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Phase-o-scope
Try the live page: load any number of audio tracks into the player, and click a track to play. Or see a quick YouTube walkthrough.
Back when I was a full-time broadcaster and spent my evenings in a windowless studio, one source of both fun and useful information was the "phase-o-scope," a single-purpose oscilloscope that worked only in "xy mode", showing the stereo spread of an audio signal by drawing Lissajous patterns.
The pattern for in-phase audio will group roughly around the line y=x (the diagonal line from top right to bottom left of the display), although tracks with a broader stereo signal will deviate more. A pattern oriented around y=-x (top left to bottom right) is a sign of phase cancellation.
In-phase audioOut-of-phase audio
The "extreme green" look is a tribute to the glowing green CRT display typical of an old oscilloscope.
Phase-o-scope is an ongoing project written in React.js. The oscilloscope portion is hand-coded using the html Canvas and Web Audio APIs, while the waveform and spectrogram at the bottom of the page use wavesurfer.js.
About
Oscilloscope audio phase tool, written in React
Resources
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Phase-o-scope
Try the live page: load any number of audio tracks into the player, and click a track to play. Or see a quick YouTube walkthrough.
Back when I was a full-time broadcaster and spent my evenings in a windowless studio, one source of both fun and useful information was the "phase-o-scope," a single-purpose oscilloscope that worked only in "xy mode", showing the stereo spread of an audio signal by drawing Lissajous patterns.
The pattern for in-phase audio will group roughly around the line y=x (the diagonal line from top right to bottom left of the display), although tracks with a broader stereo signal will deviate more. A pattern oriented around y=-x (top left to bottom right) is a sign of phase cancellation.
In-phase audioOut-of-phase audio
The "extreme green" look is a tribute to the glowing green CRT display typical of an old oscilloscope.
Phase-o-scope is an ongoing project written in React.js. The oscilloscope portion is hand-coded using the html Canvas and Web Audio APIs, while the waveform and spectrogram at the bottom of the page use wavesurfer.js.
About
Oscilloscope audio phase tool, written in React
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Phase-o-scope
Try the live page: load any number of audio tracks into the player, and click a track to play. Or see a quick YouTube walkthrough.
Back when I was a full-time broadcaster and spent my evenings in a windowless studio, one source of both fun and useful information was the "phase-o-scope," a single-purpose oscilloscope that worked only in "xy mode", showing the stereo spread of an audio signal by drawing Lissajous patterns.
The pattern for in-phase audio will group roughly around the line y=x (the diagonal line from top right to bottom left of the display), although tracks with a broader stereo signal will deviate more. A pattern oriented around y=-x (top left to bottom right) is a sign of phase cancellation.
In-phase audioOut-of-phase audio
The "extreme green" look is a tribute to the glowing green CRT display typical of an old oscilloscope.
Phase-o-scope is an ongoing project written in React.js. The oscilloscope portion is hand-coded using the html Canvas and Web Audio APIs, while the waveform and spectrogram at the bottom of the page use wavesurfer.js.
About
Oscilloscope audio phase tool, written in React
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