. Elements of acoustical engineering. Electro-acoustics; Sound. FEEDBACK APPLIED TO A LOUD SPEAKER 135 double voice coil is used. The response characteristic of this loud speaker with a double voice coil is shown in Fig. Feedback Applied to a Loud Speaker. — Feedback in a transmis- sion system or a section thereof is the returning of a fraction of the output to the input. Negative feedback is feedback which results in decreasing the amplification. Among the sources of nonlinear distortion and nonuniform response in a reproducing system may be the power amplifier and loud speaker. I
. Elements of acoustical engineering. Electro-acoustics; Sound. FEEDBACK APPLIED TO A LOUD SPEAKER 135 double voice coil is used. The response characteristic of this loud speaker with a double voice coil is shown in Fig. Feedback Applied to a Loud Speaker. — Feedback in a transmis- sion system or a section thereof is the returning of a fraction of the output to the input. Negative feedback is feedback which results in decreasing the amplification. Among the sources of nonlinear distortion and nonuniform response in a reproducing system may be the power amplifier and loud speaker. It is possible to reduce distortion and improve the response as a function of the frequency of an amplifier by making the amplification deliberately higher than necessary and then feeding the output back in such a way as to throw away excess gain. In the same way this system may be made to include the loud speaker. It is not an easy proposition. PICKUP COIL ./VOICE CONE f COIL MICROPHONE/. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Olson, Harry Ferdinand, 1901-. New York, D. Van Nostrand company, inc.
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