A field-type artificial voice has been developed consisting of a two-way loudspeaker system located in an enclosure with the dimensions of the average human head. The simulated head is supported upon a simulated chest by means of a simulated neck. The frequency response of the artificial voice is within ±2 1/2 dB from 62.5 to 12,000 Hz. The directivity patterns of the artificial voice are practically the same as those of the human voice throughout the frequency range from 62.5 to 12,000 Hz. The field-type artificial voice is used for subjective and objective testing of microphones and rooms for pickup conditions and distances of the kind and magnitude employed in speech reproduction in radio, television, sound motion picture, disk and magnetic tape recording, and sound reenforcement.
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