ST-6240 Four Channel Automatic High Speed Feed Suppressor

Function Introduction: The four channel fully automatic high-speed feedback suppressor uses a powerful signal processor combined with patented algorithms to suppress the occurrence of acoustic feedback. It uses echo cancellation and reverberation cancellation algorithms to effectively filter out room reverberation, thereby achieving the goal of eliminating acoustic feedback. By adding shielding noise (inaudible noise) to the output signal, or changing the frequency of the output signal by 5 Hz, a feedback suppressor can detect components that cause reverberation in the signal and remove them before feedback occurs, while maintaining the initial signal intact. Number of input channels: 4 channels (4-channel balanced line/microphone input or select 4-channel 6.35 unbalanced input). Provide 48V phantom power supply switch selection module, which can provide power for 4 microphones Features and Benefits: • Feedback suppression algorithm • Eliminate feedback before it happens • Automatically adapt to acoustic environments • Up to 12 dB additional gain to effectively prevent feedback • 4-channel balanced line or microphone input to provide phantom power • Self adaptive filters can switch between "fast" and "precise" modes. The fast mode is suitable for situations where microphone position changes frequently: For example, in a discussion system with multiple switching microphones. Precision mode is suitable for situations where the microphone position is fixed. For example, a forum with a complex acoustic environment. Adaptive filters can converge at a slower rate, thereby suppressing more reverberation components. Depending on the acoustic environment and the selected operating mode, an additional gain of up to 12 dB can be obtained before acoustic feedback occurs. The ST-6240 feedback suppressor also incorporates an automatic mixer to achieve 4-way microphone input. In many cases, such as on a podium, podium, or conference table, using four microphones can better capture the voice of a moving speaker, which often increases the risk of acoustic feedback. Due to this problem, the automatic mixer in the feedback suppressor will automatically reduce the gain of the microphone with a weak signal input, while increasing the gain of the other microphone with a strong signal input. Technical characteristics 1. Ultra wide frequency response circuit technology, no sound variation, no metal tails, strong echo suppression. 2. Digital frequency shift technology, ultra strong anti howling, smooth and stable sound, without floating and dry hair. 3. Super stability: built-in crystal oscillation, software algorithm, good stability performance, and little resistance to temperature and external interference. 4. The appropriate audio frequency spectrum can be customized according to the application situation, thereby greatly improving the system gain. The ST-6240 fully automatic high-speed frequency shift feedback suppressor, coupled with any type of STABCL conference microphone, can achieve a pickup of between 50CM and 100CM without howling or changing sound when dozens of microphones are simultaneously activated in the same venue.

Category：

Peripheral series

Service hotline:

0750-7779797

Online message

Detailed introduction

Number of input channels: 4 channels (4-channel balanced input or select 4-channel 6.35 unbalanced input)
Power supply voltage: 4-channel 48V phantom power supply
Rated voltage: 220V ± 10% 50Hz
Sampling frequency: 32KHz
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)

Key words:

ST-6240