
The gramophone
Studio techniques
Acoustics The correct reverberation characteristic for the
music is obtained by positioning of movable absorption panels
in the studio.
Microphone techniques These vary, but most use a main
stereo pair with spot microphones to cover weaker instruments.
Delay lines may be used to synchronise these with the signal
from the further main microphones.
Pan-potting The output from the spot microphones is mixed
into the two stereo channels in proportion to their position.
This produces amplitude but not phase differences. The stereo
image of these is thus imperfect.
Depth More distant instruments produce a greater amoun ...