Frequency analyser



K Shields,

Birkenhead,

Merseyside.



This program is written for and converts the 48K Spectrum

into a frequency analyser. When music or sound is played in

through the ear socket, a graph on the screen - generated

by machine code - shows the frequencies present in the

sound and the relative amplitude of those frequencies.

  The easiest way of seeing this is to plug a cable from

the ear socket of the Spectrum and play a tape containing

music. The graphic produced is a bar graph showing the low-

est frequencies at the top of the screen and the highest at

the bottom; the amplitude is shown across the screen.