Table of Contents
Advertisement
IQ-PIP-USP3/CN
4.2.21 Delay
Due to the nature of DSP processing, there is some inherent delay within the USP3/CN.
These delays are:
• Balanced Audio Input ADC: 312 µs
• USP3/CN DSP Processing: 665 µs
• Output DAC: 135 µs
In addition to these unavoidable delays, additional delay can be added to each channel. Each
channel is capable of 2.1 seconds of delay in 20.8 µs increments.
4.2.22 Noise Generator
Each channel has an independent noise generator that allows noise to be mixed into the
audio signal. This is useful for noise masking applications and testing. Each channel has the
following controls:
• Noise On/Off: The channel's noise generator can be independently turned on.
• Noise Type: Full spectrum white noise or low frequency weighted pink noise.
• Noise Level: A fader to allow the noise level to be controlled.
4.2.23 Sine-wave Generator:
A single sine-wave signal generator allows the mixing of a single tone into the audio signal.
Typical applications can be for the injection of a high frequency tone (19kHz) into the signal
in paging type system to continually drive the speaker, allowing continuous monitoring of
the speaker load. The following controls exist:
• Sine On/Off: The sinewave signal generator's function.
• Sine Frequency: Controllable from 20Hz to 20KHz.
• Sine Level: Each channel's sinewave signal level can be independently controlled.
4.2.24 Peak Voltage Limiter
This limits the peak voltage output of the amplifier. Four parameters control this limiter for
each channel:
Enable: Enables or disables this function.
Threshold: Sets the level, in absolute voltage, which the limiter will allow from the ampli-
fier. The range is from 12 V
to 255 V
pk
pk.
Attack Time: Sets the attack time of the limiter. The attack time is defined as the time it
takes the limiter to attenuate the output signal by 20 dB. The range is from 1 millisecond to
100 milliseconds.
Release Time: Sets the release time of the compressor. The release time is defined as the
time it takes the limiter to increase the output signal by 20 dB. The range is from 10 millisec-
onds to 10 seconds.
4.2.25 Average Power Limiter
This limits the long-term output power of the amplifier. Four parameters control this limiter
for each channel:
page 22
Reference Manual
Advertisement
Table of Contents
