DD161018

DD161018

DD161018 is a page of Delia's handwritten notes for Science in the Shadows.

Transcript

     Science in the Shadows
     ----------------------

Ring modulator:
                             modulation
       Muirhead   B & K. -- 4/sec, freq
                            range just
         610       850      audible

         305       425

         152½      212½

    various[?] at  212½
        .
        .
        .
     and faded
Switched in RP2 + TR90 f/b + echo
           ^
   rec^d^. on BTR2 at 7½ i.p.s. p/b at 15 i.p.s.

Notes

The Muirhead is a precision sine wave oscillator, B & K is a frequency-modulated sine wave oscillator (a.k.a. the Wobbulator), while the TR90 and BTR2 are tape recorders.

The last line reads "Recorded on the BTR2 [tape recorder] at seven and a half inches per second and played back at fifteen inches per second."