FS-101 4-input 1-output fully automatic digital feedback suppressor

Description

Introduction:
It employs echo cancellation and noise reduction algorithms to effectively eliminate room reverberation, thereby achieving the goal of eliminating acoustic feedback. By adding noise (unheard noise) to the output signal or changing the frequency of the output signal by 5 Hz, the feedback suppressor can detect the components in the signal that cause reverberation and remove them before feedback occurs, while preserving the integrity of the initial signal. Number of input channels: 4 channels (4-channel balanced line/microphone input or choose 4-channel 6.35 non-balanced input). Provides a 48V phantom power supply switch selection module, capable of providing power for 4 microphones.
Features and advantages:
1. With an LCD display, it can visually display the spectrum of the current audio and the working status.
2. Prevent feedback before it occurs.
3. Automatically adapt to the acoustic environment.
4. Up to 12 dB additional gain, effectively preventing feedback from occurring.
5. 4 channels equipped with 6.3 and XLR Canon combo input, each providing 48V phantom power supply separately.
6. Adaptive filter can be switched between “fast” mode and “precise” mode.
7. Fast mode is suitable for situations where the microphone position frequently changes, such as in a discussion system with multiple conversion microphones. Precise mode is suitable for situations where the microphone position is fixed.
8. Adaptive filter can converge at a slower speed, thereby suppressing more reverberation components.
9. Can obtain up to 12 dB additional gain before acoustic feedback occurs, depending on the acoustic environment and the selected operation mode.
10. Built-in automatic mixer to achieve 4-channel microphone input.
In many cases, such as on a podium, platform, or conference table, using 4 microphones can better capture the voice of a moving speaker, which often increases the risk of acoustic feedback.
Given this issue, the automatic mixer in the feedback suppressor will automatically reduce the gain of the microphone with the weaker signal input, while increasing the gain of the microphone with the stronger signal input.
Technical features:
1. Ultra-wide frequency response circuit technology, no pitch change, no metallic tail tone, strong echo suppression.
2. Digital frequency shifting technology, strong anti-cry, sound round and stable, no drifting or dryness phenomena.
3. Super stable: built-in crystal oscillator, software algorithm, good stability performance, very little affected by temperature and external interference.
4. Can be customized to the appropriate audio spectrum according to the application environment, thereby significantly improving the system gain.
Technical parameters:
Number of input channels: 4 channels (4-channel balanced input or choose 4-channel 6.35 non-balanced input)
Power supply voltage: 4 channels 48V phantom power supply
Rated voltage: 220V ± 10% 50Hz
Sampling frequency: 48KHz
Frequency response: 125Hz~15KHz (voice mode) 20Hz~15KHz (music mode)
Distortion: >0.1%@ 1KHz
Signal-to-noise ratio: >90dB
Signal delay: 7Ms (music mode) 11MS (voice mode)
Input impedance: 20K ohm
Output impedance: (balanced) 200ohm
Temperature range: -10~55℃
Weight: 3.5KG
Size: 480×230×44mm”