Reverb
From Audacity Development Manual
Use the Reverb effect to add reverberation to a track. The effect is based on the 'freeverb' algorithm. A reverberation effect is sometimes desirable for concert halls that are too small or contain so many people that the hall's natural reverberance is diminished. Applying a small amount of stereo reverb to a (dry) mono signal in a 2 channel stereo track will usually make it sound more natural.
Note that this effect increases both the volume and the length of the audio, so to prevent clipping the "Dry Gain" would normally be set below 0 dB, and to prevent the reverberation tail from being cut short the selection would normally be extended beyond the end of the audio.
- Accessed by:
Bill 08May13: added Steve's parameter descriptions to mine so we can decide which is best.
Settings
- Room Size (%): Sets the size of the simulated room. 0% is like a closet, 100% is like a huge cathedral or large auditorium.
A big setting will simulate the reverberation effect of a large room and a small setting will simulate the effect of a small room.
- Delay (ms): Delays the Reverb effect for the set time. This delays both the onset of the reverberation and the beginning of the its tail.
A time delay between the start of the original (input) sound and the start of the reverberated sound.
- Reverberance (%): Sets the length of the reverberation tail.
How long the reverberation continues for - this simulates the "liveliness" of the room acoustics.
Bill 07May13: some quick and dirty experiments to determine the RT60 times (all with damping 0%, tones at 100%, wet gain 0 db, "Wet Only")
- Room Size 100%, Reverberance 0%: 0.2 sec
- Room Size 100%, Reverberance 100%: 9 sec
- Room Size 0%, Reverberance 0%: 0.13 sec
- Room Size 0%, Reverberance 100%: 0.9 sec
- Damping (%): Increasing the damping produces a more "muted" effect. The reverberation does not build up as much, and the high frequencies decay faster than the low frequencies.
Simulates the absorption of high frequencies in the reverberation.
- Tone Low (%): Setting this control below 100% reduces the low frequency components of the reverberation, creating a less "boomy" effect.
- Tone High (%): Setting this control below 100% reduces the high frequency components of the reverberation, creating a less "bright" effect.
- Wet Gain (dB): Sets the level of the reverberation effect in the mix.
- Dry Gain (dB): Sets the level of the original audio in the mix.
- Stereo Width (%): Sets the apparent "width" of the Reverb effect.
The amount of variation between left and right channels. This setting is only relevant to stereo tracks. When set at zero the effect is applied independently to left and right channels. Higher values will increase the interaction between the left and right channels, creating a more "spacious" effect.
- Wet Only: When this control is checked the wet signal (reverberation) only is returned to the track. See Examples, below, for how to use this to create a "reverb only" track that you can then mix with your original track.
The original ("dry") signal is not included in the output. This setting can be useful when previewing the effect, but would normally be disabled when applying the effect.
Presets
- Load: Click this button to open a dialog listing the standard presets. Click on a preset name in the list then click the button to load those settings into the effect.
User Settings
There are ten user setting "slots" available for you to save your favorite settings. They are initially named "Settings0" through "Settings9".
- Load: Click this button to open a dialog listing the user settings. Click on a setting name in the list then click the button to load that settings into the effect.
- Save: Click this button to save the current settings into a user setting. In the "Reverb Settings" dialog, click on a setting then click the button to save your settings under that name.
- Rename: Click this button to rename your user settings. In the "Reverb Settings" dialog, click on a setting then click the button to open a dialog to change the setting name. Type your setting name then click the button to change the setting name.
