NDLI: Notes on the Development of a New Type of Hornless Loud Speaker

Content Provider	IEEE Xplore Digital Library
Author	Rice, Chester W. Kellogg, Edward W.
Copyright Year	1884
Abstract	The paper describes a series of tests directed to the evolution of a loud speaker, free from resonance. Various types of sound source were tried. For the most part horns were aroided. Diaphragms, when employed, were either so light and stiff that their natural resonance was above the essential frequency range, or so flexible that their resonance was below the lowest important acoustic frequency. Best results were obtained with the latter type, and it is shown on theoretical grounds that a small diaphragm, the motion. of which is controlled by inertia only, and located in an opening in a large flat wall, will give an output sound pressure proportional to the actuating force, independent of frequency. It should be possible to make at ideal sound reproducer on this principle. A practical loud speaker which approximately fulfills the above conditions hats now been evolved. It contsists of a flexibly-supported paper cone actuated by a coil in a magnetic field and provided with a baffle. As coumpared with ordinary loud speakers, this instrument radiates much more of the low tones and more of the very high frequencies which makes for clearer articulation. The extension of the range of response of the loud speaker to higher and lower frequencies, makes defects in the remainder of the system more noticeable, particularly roughness and blasting due to overworked amplifiers. It is, therefore, important that the amplifier used with the new loud speaker be designed to have ample capacity.
Starting Page	461
Ending Page	480
Page Count	20
File Size	12907401
File Format	PDF
ISSN	00963860
Volume Number	XLIV
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1925-01-01
Publisher Place	New York, U.S.A.
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Frequency Loudspeakers Resonance Testing Force control Motion control Pressure control Proportional control Coils Magnetic fields
Content Type	Text
Resource Type	Article
Subject	Industrial and Manufacturing Engineering Control and Systems Engineering Electrical and Electronic Engineering

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Electrical Loud Speakers

Notes on the development of a new type of hornless loud speaker

Combination Horn and Direct Radiator Loud-Speaker

The Performance and Theory of Loud Speaker Horns

Slim-type speaker for flat-panel televisions

Slim-type speaker for flat-panel televisions

The Function and Design of Horns for Loud Speakers

Discussion On the Amplitude of Driven Loud Speaker Cones

A New Cone Loud Speaker for High Fidelity Sound Reproduction

Notes on the Development of a New Type of Hornless Loud Speaker

Similar Documents

Electrical Loud Speakers

Notes on the development of a new type of hornless loud speaker

Combination Horn and Direct Radiator Loud-Speaker

The Performance and Theory of Loud Speaker Horns

Slim-type speaker for flat-panel televisions

Slim-type speaker for flat-panel televisions

The Function and Design of Horns for Loud Speakers

Discussion On the Amplitude of Driven Loud Speaker Cones

A New Cone Loud Speaker for High Fidelity Sound Reproduction

Notes on the Development of a New Type of Hornless Loud Speaker