Adjusting the output voltage of an Advance Type N1 audio oscillator.
The control for setting the output frequency of a Advance N1 audio oscillator. When used for music this had to be set using a frequency counter.
Brian prepares to create the original sound of the Tardis, as made in 1963 by scraping a front door key down to strings of an old piano. The piano frame remained at the Workshop for many years.
The top of a tape loop stand, usually known as a 'Do Not Fiddle With', because of the warning carried thereon.
The BBC PA Stabiliser. This was a RF-based frequency shifter, designed to reduce howl-round in public address systems, but it could also be used for special effects.
Dave Young, an engineer whose abilities far exceeded all his successors, including those of the author. He was also a thoroughly nice man, free of any snobbery, made even more pleasant by his soft Hampshire accent.
A Tempophon, similar to the one used at the Workshop. The drum at the centre contains the rotating heads. The pitch control is marked in musical intervals.
A Tempophon, similar to that used at the Workshop, with the spinning heads revealed.
A diagramatic view of the Tempophon, which employed four rotating heads, allowing the pitch of a recording to be changed without altering the replay speed or, conversely, to change the duration of a recording without altering its pitch.
This diagram shows how feedback could be used between the input and output of a tape machine, creating repeated sounds, which rose or fell in level over time, depending on the feedback setting.
