| Show D device ev i e A aids i d 5 E 10 C tr C aiace use of its own ec echo r CHICAGO A 14 vicc vice no ingver n ulf rif dolf rolf bag ilae which it ii po tile ildo ilde for the UK electric ete cit atric orsan oran to create and anit utilize its own echo a modern for the reverberation provided by toy UK the stone tone wails and high vaulted inci of large cathedrals official name namo of the thie I device is the tion control and its sole function according to li Is production tf of the echoes which alone nione as nure aure full organ performance explaining the use ue of re tion control organ orwan experts point out that echo is present in varying degree in all music and in most aund sound being bring that part of sound which reaches the listeners ear car by reflection from neighboring jun jur surfaces rather than by straight air line becciu Bc Be causi caust ciu early churches main ly vcra larae ind And solidly constructed ted inose keople i learned to prefer organ music with considerable echo they odd add need of the echo maker maken became acute when corric churches bu built bulit lt their acoustics especially for speech a situation that is pot the best for mil musical recep reception tion it also provides the only way in which real organ music can be secured out of doors since the absence of walls would otherwise mean the absence of reverberation and even the largest organ would sound thin and shrill the reverberation unit takes the place of natures nature own ovin e cho echo by pickling up a part of ench each tone signal from the organ console and carrying it through a mechanism that delays each sound the delayed signa nrc arc amplified and sent on to join the original unaltered electrical impulses or signals what the ear then hears Is the original music ns as played by the organist followed quickly by its echo or reverberation just as in a building part of the music reache reaches ie the listener directly and part of is it t is I 1 reflected from w wails walls ails alls and ceiling and reaches the ear car later than the original music the length of 0 the rever reverberation be ration nation time Is also controlled by the unit this being an important factor in producing a natural sounding echo some churches have hav 6 a re tio as low as three seconds and other large churches run up to 11 seconds |
