Sony PCM-D100 Operating Instructions Manual page 71

Menu Item
Recording LIMITER
Settings
Settings (*: Default setting)
With two A/D converters for one channel, the linear PCM recorder
always reserves audio signals that are 12 dB lower than audio
processed in the normal circuit in addition to the normal audio
signals. If an over-input occurs, recorded data from the point at
which the over-input starts is replaced and compensated. The
limiter prevents sound distortion using a limiter minus time
constant (not available for analog).
Normal circuit
Peak limiter circuit
(–12 dB)
You can set the time required for recovery from the influences of the
digital limiter circuit:
OFF*: The LIMITER function is disabled.
150ms: The linear PCM recorder recovers within 150 milliseconds.
1 sec: The linear PCM recorder recovers within one second.
1 min: The linear PCM recorder recovers within 1 minute.
Notes
The limiter circuit functions to keep the signal level below the
ˎ ˎ
maximum input level. When a loud sound is input suddenly, the excess
part of the sound is automatically set within the range of the maximum
input level in order to prevent distortion.
The limiter circuit of the linear PCM recorder does not compensate for
ˎ ˎ
clipping when audio over 12 dB is input. In this case, sound may be
distorted.
When the setting is enabled, the peak value with the limiter circuit in
ˎ ˎ
operation appears if the maximum peak value exceeds 0 dB.
The recovery time represents the period when the linear PCM recorder
ˎ ˎ
records sound at a volume 12 dB lower than the normal circuit. In
recordings where over-input occurs periodically, the recording volume
may be changed so frequently that it disturbs you. If this occurs, try a
longer recovery time setting.
Over-input occurs.
switching
Optimal level is set
automatically
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