Digital reverb effect CVTk01

The use of two imported effect chips (the general effect on the market only has one ordinary effect chip), the reason why to use two imported effect chips is that the three-dimensional surround effect can be achieved, and the effect sound field produced by this method not only retains the direction of the sound source of the original signal, but also accompanies the sound effect that produces a sense of surrounding. When listening to surround sound, the listener can distinguish the sound from the front and back, left and right, that is, surround sound can expand the spatial sound source from the line to the entire horizontal plane and even the vertical plane, so you can feel the spatial reverberation process of the performance, with a more moving sense of presence, this sense of presence is more beautiful and vivid, so it is more infectious, sound quality and effect are good.

Professional frequency shift feedback suppresses anti-whistling to ensure that the human voice is pure and beautiful

This product adopts imported chip double-layer processing automatic frequency shift feedback suppressor (ordinary effects on the market generally use single-layer processing, the ability will also be halved and need to be manually opened), the suppression of howling process is completed automatically, no need to manually identify and debug, we know that all natural sounds have their inherent frequency composition, which can be decomposed into countless single audio frequencies (fundamental and countless harmonics).

The frequency shifter will generally move into the signal frequency of 3~8Hz, that is, the frequency shift number of 3~8Hz is adjustable. For example, when entering a 1000Hz signal, when the positive direction shifts 3~8Hz, the frequency shifter will output a 1003~1008Hz signal; When the frequency shift in the opposite direction is 3~8Hz, the frequency shifter will output a 997~992Hz signal, according to the analysis of the process mechanism of howling, it can be seen that it is the result of N cycles amplified stronger than the feedback signal.

The anti-whistling process of the frequency shifter is as follows: when the frequency signal at the spatial peak position meets the K closed >1 in the feedback, there is the first feedback signal that is strongly fed back to the microphone input for the first time, and the signal is amplified by the frequency shifter but changes in frequency (that is, 3~8HZ is increased or decreased on the basis of the original signal frequency); At this time, the output signal moves 3~8Hz at the peak position, and we know that the sound pressure at the peak position is the highest, which means that the output signal at this time is fed back to the microphone again (the second feedback sound) The sound pressure decreases; After the secondary feedback sound enters the frequency shifter, it is moved again by 3~8Hz, causing the signal frequency of the third feedback to the microphone to deviate from the peak point of 3~8Hz, and the sound pressure continues to decrease... And so on. The resulting feedback signal weakens every cycle, and finally the peak position signal meets the stable working conditions of K closed <1, and the howling will not occur.