Room-Tone Tail
Definition
The natural reverberation that follows a sound event in an enclosed space. Each room has a characteristic decay time and spectral shape. A splice at the wrong point in a reverberation tail truncates the tail, producing an unnatural silence that is visible on a spectrogram.
- Definition
- Natural reverberation following a sound event in an enclosed space
- Characteristic
- Decay time and spectral shape specific to the room
- Splice artifact
- Truncated tail produces unnatural silence
- Detection method
- Visible on a spectrogram
Common questions
Why is a truncated reverberation tail such a reliable splice indicator?+
Natural reverb decays gradually and predictably according to the room's acoustics, so an abrupt cutoff mid-decay is physically inconsistent with an unedited recording and stands out clearly on spectrographic analysis.
Can a room-tone tail be faked or restored to hide a splice?+
Sophisticated editing can insert synthetic reverb or room noise to mask a cut, but matching the exact decay characteristics and spectral shape of the surrounding original recording is difficult, and inconsistencies often remain detectable under close spectral analysis.
How does room-tone tail analysis differ from simply listening for a splice?+
Listening can miss subtle truncations that are not perceptually obvious, while spectrographic analysis visualises the decay curve directly, making an abrupt or physically implausible cutoff detectable even when it is not audible to the ear.
Related terms
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- Spectrogram
- A time-frequency plot in which the horizontal axis is time, the vertical axis is frequency, and colour or brightness encodes signal energy....