Frequency Oscillations

The wonderful and indigenous sounds of the stereophonic on vinyl. In 1958 we were introduced to stereo effects on phonographic records. The stereo technology consists of two separate channels of sound recorded in the same groove given the name of  stereophonic of which the effect still resident in the vinyl records of today. Just as the use of two eyes creates a perception of depth, so can the effect of musical presence be achieved by stereophonic!

The Decca Recording Company (ffrr) Series Record Label

The recording sounds with two or more appropriately positioned microphones playing it back into two separate Hi-Fi loudspeakers facilitate this in the recording and provide two separate signal channels. An Hi-Fi stereo recording is made available to two separate signal channels that forms an overture of oscillations that is  perpendicular to either one or the other of the faces in the right angle face of  the record grooves!

Frequency Oscillations

These two signals are  fed into an audio amplifier through to the loudspeakers, then the monaural pickup is replaced by one with two coils, that sense the motion of the stylus at right angles to each groove wall; the inside wall is used as the left channel and the outside wall is used as the right. channel. This process set a conditional criteria for frequency control of a recording makes the variation in frequency oscillations impossible for the ear to perceived!