Karaoke Vocal Enhancement Circuit

Of course, it is the electronic engineer's business to design the sound circuit, but if the electronic engineer does not learn a little about acoustics, the designed thing can only be called a machine rather than a sound. Although most audio equipment manufacturers often brag about how deep their understanding of music is, you do n’t have to take it too seriously. The karaoke vocal booster circuit introduced below is a triumph for the author. At that time, the author once made a design in a well-known audio equipment manufacturer. In the design of an entry-level karaoke amplifier, the author connected this circuit behind the microphone amplifier circuit. As a result, the karaoke singing effect of this machine exceeded that of the same. The factory's high-end machines surprised all the senior engineers and bosses. The secrets were not well-known at the time.
The circuit is very simple, two filters with the same structure, one raises the frequency at 150Hz to make the vocals plump and full of energy, and one raises the frequency at 2400Hz to make the vocals brighter and the tooth sounds also get Good performance. The improvement of the effect is based on the principle of acoustic analysis of sound waves in acoustic knowledge, and the circuit is the means of realization. Below is the frequency response diagram of this circuit. It is quite simple to say and looks very simple, but it can be sung, a bit of a singer's taste!

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