Doug Johnson Productions

Scope guide · Sound & timing

Audio

Follow levels, listen to a chosen mix and inspect phase, waveforms and history. Professional adds spectra, waterfalls and Surround.

ExpressProfessional

Learn & Reference / Scope library / Audio

Which channel or part of the sound changed?

Add this view from Add scope > Audio, then choose the input you want to inspect. Use the pane's i button for its in-app reading guide.

Read this example.

A separate 5.1, 48 kHz audio-only sample feeds meters, individual spectrum traces and a channel-color waterfall.
A separate 5.1, 48 kHz audio-only sample feeds meters, individual spectrum traces and a channel-color waterfall. Click the image for a larger view.
  1. L, R, C, LF, BL and BR identify the six reported channels.
  2. PGM selects listening and loudness contributions; PH selects phase-analysis buses.
  3. Spectrum traces show channel frequency content; the waterfall puts recent energy at the top and older energy below.

Try it yourself.

  1. Select an audio source, or add an audio-only file in Professional. Choose All channels to analyze.
  2. Assign PGM and PH buses. Enable Listen to hear the selected mix.
  3. Explore Phase, Waveform and Level history; Professional also offers RTA + waterfall and Surround.

Useful controls.

  • Hold a channel label to solo temporarily.
  • Waveform shows a rolling 20 ms window; Level history retains up to five minutes.
  • Analyze the first N channels or All. Quality cards assess those analyzed channels.

Use listening to interpret meter and quality-card evidence. Photographic website examples identify their separate generated or file audio sources in captions.