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Compressor
The Compressor effect reduces dynamic range, producing consistent volume levels and increasing perceived
loudness. Compression is particularly effective for voice-overs, because it helps the speaker stand out over musical
soundtracks and background audio.
For examples of highly-compressed audio, listen to recordings of modern pop music. By contrast, most jazz recordings
are lightly compressed, while typical classical recordings feature no compression at all.
See also
"Applying effects" on page 46
Standard options
Specifies the source type and desired effect.
Mode
Controls the level of compression.
Amount
Advanced options
Boosts or cuts amplitude after compression. Possible values range from -30 to +30 dB, where 0 is unity gain.
Gain
Sets the input level at which compression begins. The best setting depends on audio content and style. To
Threshold
compress only extreme peaks and retain more dynamic range, try thresholds around 5 dB below the peak input level.
To highly compress audio and greatly reduce dynamic range, try settings around 15 dB below the peak input level.
Sets a compression ratio between 1-to-1 and 30-to-1. For example, a setting of 3 outputs 1 dB for every 3-dB
Ratio
increase above the threshold. Typical settings range from 2 to 5; higher settings produce the extremely compressed
sound often heard in pop music.
Determines how quickly compression starts after audio exceeds the Threshold setting. The default, 10 milli-
Attack
seconds, works well for a wide range of source material. Use faster settings only for audio with quick transients, such
as percussion recordings.
Determines how quickly compression stops when audio drops below the Threshold setting. The default, 100
Release
milliseconds, works well for a wide range of audio. Try faster settings for audio with fast transients, and slower
settings for less percussive audio.
Automatically compensates for any change in overall level, ensuring that original and
Automatic Makeup Gain
processed amplitude peaks are equal.
Convolution Reverb
In a room, sound bounces off the walls, ceiling, and floor on the way to your ears. All these reflected sounds reach
your ears so closely together that you don't perceive them as separate echoes, but as a sonic ambience that creates an
impression of space.
In Soundbooth, you can use the Convolution Reverb effect to reproduce rooms ranging from coat closets to concert
halls. Convolution-based reverbs use impulse files to simulate acoustic spaces. The results are incredibly realistic and
life-like.
Note: Because Convolution Reverb requires significant processing, you may hear clicks or pops when previewing it on
slower systems. These artifacts disappear when you apply the effect.
SOUNDBOOTH CS3
49
User Guide
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