Helium speech unscrambler

Claim 2

Apparatus according to claim 2 wherein: a. the recording heads jointly rotate about the axis and define a cylindrical surface.

Claim 3

Apparatus according to claim 2 wherein: a. the magnetic recording medium is a magnetic tape.

Claim 4

Apparatus according to claim 4 wherein: a. the magnetic tape is a continuous loop and which additionally includes; b. erase means positioned contiguous said loop for erasing a stored signal subsequent to said signal being read.

Claim 5

Apparatus according to claim 1 wherein: a. the movable recording means is rotatable aBout a stationary axis; and b. the read means is displaced from, and stationary with respect to, said axis.

Claim 6

Apparatus according to claim 1 wherein: a. VT is substantially constant; and b. VH is variable in accordance with SH.

Claim 7

Apparatus according to claim 1 which includes: a. means for varying the duration of signal transfer relationship of the recording unit with the recording medium.

Claim 8

Apparatus according to claim 1 wherein: a. the movable recording means is a head assembly rotatable about an axis and having a periphery and individual recording units positioned at points spaced around the periphery of said assembly; and wherein b. the recording medium contacts said periphery between first and second points; and which additionally includes c. means for varying the spacing between said first and second points.

Claim 9

Apparatus according to claim 9 wherein: a. the recording medium is magnetic tape; b. the head assembly defines a cylindrical surface; c. the recording units are magnetic recording heads spaced evenly about said cylindrical surface; d. the magnetic tape initially touches said cylindrical surface at the first point and contacts said cylindrical surface until said second point; e. the distance along said cylindrical surface between the first and second points being less than the distance along the cylindrical surface between adjacent magnetic recording heads.

Claim 10

Speech unscrambler apparatus comprising: a. an input for receiving a speech signal including a plurality of formants substantially shifted in frequency from normal by a factor SH, and an unshifted fundamental; b. filter means for removing said fundamental to pass only said formants as a formant signal; c. a first amplifier operatively connected to said filter means for amplifying said formant signal; d. a magnetic recording medium; e. a rotatable head assembly including a plurality of magnetic recording heads; f. drive means for rotating said head assembly for bringing said magnetic recording heads into sequential recording contact with said recording medium; g. transfer means for transferring the amplified formant signal to said magnetic recording heads; h. drive means for driving said recording medium relatively past said head assembly in a direction opposite to the direction of movement of said head assembly when in signal transfer relationship with said recording medium; i. a magnetic read head positioned contiguous said recording medium for picking up recorded formant signals thereon; j. a second amplifier operatively connected to said magnetic read head to amplify the signal provided thereby; and k. output utilization means operatively connected to said second amplifier.

Claim 11

Apparatus according to claim 11 wherein: a. the transfer means includes at least one slipring positioned coaxially about the axis of rotation of the head assembly.

Claim 12

Apparatus according to claim 11 which additionally includes: a. filter means connected in circuit between the magnetic read head and the second amplifier for filtering out high frequency noise.