|
|
Dynamics effect
The
Dynamics effect can be used as a compressor, limiter, and expander.
As a compressor and limiter, this effect reduces dynamic range,
producing consistent volume levels. As an expander, it increases
dynamic range by reducing the level of low‑level signals. (With
extreme expander settings, you can totally eliminate noise that
falls below a specific amplitude threshold.)
Standard settings- Amount
- Controls the overall level of expansion, compression, and
limiting.
Advanced settings- Threshold
- Sets the input level at which dynamics processing begins.
Note that limiting and compression begin above their threshold settings,
while expansion begins below.
The best Threshold setting
varies for each phase of dynamics processing:
- Limiter
- Set the threshold near the maximum amplitude you want to
achieve.
- Compressor
- Set the threshold around 5 dB below the peak input
level to retain more dynamic range. Or try settings around 15 dB
below the peak input level to greatly reduce dynamic range.
- Gate/Expander
- Set the threshold at the level of background audio you want
to remove.
- Ratio
- Sets a compression or expansion ratio of between 1‑to‑1 and
30‑to‑1. For example, a compression setting of 3 outputs
1 dB for every 3-dB increase above the threshold. By contrast, an
expansion setting of 3 reduces volume by
3 dB for every 1-dB drop below the threshold.
Typical compression
settings are moderate (around 2–5), producing a natural sound. Typical
limiting and expansion settings are more extreme (around 10–30). High
limiting ratios ensure that audio produces maximum volume without distortion.
High expansion ratios ensure that undesirable background sounds become
inaudible.
- Attack
- Determines how quickly dynamics processing starts after audio
passes the threshold. The defaults (5 milliseconds for limiting,
10 milliseconds for compression and expansion) work well for a wide
range of source material. Use faster settings only for audio with
quick transients, such as percussion recordings.
- Release
- Determines how quickly dynamics processing stops when audio
passes the threshold. The default, 100 milliseconds, works well
for a wide range of audio. Try faster settings for audio with fast
transients, and slower settings for less percussive audio.
- Output Gain
- Boosts or cuts amplitude after dynamics processing. Possible values
range from ‑30 to +30 dB, where 0 is unity gain.
|
