M-7200 four-channel automatic feedback suppressor

M-7200 four-channel automatic feedback suppressor

The M-7200 four-channel fully automatic high-speed feed suppressor uses a powerful signal processor combined with MCMYK’s patented algorithm to suppress the occurrence of acoustic feedback. It uses echo cancellation and reverberation cancellation algorithms to effectively filter out room reverberation, thereby eliminating acoustic feedback. By adding shielded noise (inaudible noise) to the output signal, or by varying the frequency of the output signal by 5 Hz, the M-7200 Feedback Suppressor can detect the components of the signal that cause reverberation and remove them before feedback occurs, while leaving the initial signal intact. Number of input channels: 4 channels (4 channels balanced line/microphone input or select 4 channels 6.35 unbalanced input), 48V phantom power switch selection module is provided, which can provide power to 4 microphones.

Features and Benefits:

Our patented feedback suppression algorithm
Eliminate feedback before it happens
Automatically adapts to the acoustic environment
Up to 12 dB additional gain to prevent feedback from occurring
4 channels of balanced line or microphone inputs for phantom power
Adaptive filters can switch between “Quick” mode and “Precision” mode
2.2 inch color LCD screen

Fast mode is suitable for applications where the microphone position changes frequently:

For example, in a discussion system with multiple conversion microphones. Precision mode is suitable for applications where the microphone is fixed.

For example, a pulpit with a complex acoustic environment.

The adaptive filter is able to converge at a slower rate, suppressing more reverberation components.

An additional gain of up to 12dB can be obtained before acoustic feedback occurs, depending on the acoustic environment and the selected mode of operation.

The M-7200 feedback suppressor also has a built-in automixer for 4 microphone inputs.

In many cases, such as on a lectern, pulpit, or conference table, using 4 microphones can better capture the voice of a moving speaker, which often increases the risk of acoustic feedback.

In view of this problem, the automixer in our feedback suppressor will automatically reduce the gain of the microphone with the weaker signal input and increase the gain of the other microphone with the stronger signal input.

Technical features:

1. Ultra-wideband response circuit technology, no pitch change, no metal tail tone, strong echo suppression.

2. Digital frequency-shift technology, super anti-howling, mellow and stable sound, no hair fluttering and hair stemming.

3. Super stable: built-in crystal oscillation, software algorithm, good stability performance, little interference from temperature and external environment.

4. The appropriate audio spectrum can be customized according to the application, so as to greatly improve the system gain.

M-7200 automatic high-speed frequency-shift feedback suppressor with any type of microphone of our factory, dozens of microphones can be opened at the same time in the same venue, and can achieve 50CM to 100CM pickup without whistling and not sounding.