ES173787A3 - IMPROVEMENTS IN DEVICES FOR THE Pseudo-EXTENSION OF FREQUENCY BANDS - Google Patents

IMPROVEMENTS IN DEVICES FOR THE Pseudo-EXTENSION OF FREQUENCY BANDS

Info

Publication number
ES173787A3
ES173787A3 ES173787A ES173787A ES173787A3 ES 173787 A3 ES173787 A3 ES 173787A3 ES 173787 A ES173787 A ES 173787A ES 173787 A ES173787 A ES 173787A ES 173787 A3 ES173787 A3 ES 173787A3
Authority
ES
Spain
Prior art keywords
pseudo
extension
devices
frequency bands
bands
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
ES173787A
Other languages
Spanish (es)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Publication of ES173787A3 publication Critical patent/ES173787A3/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/66—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission for reducing bandwidth of signals; for improving efficiency of transmission
ES173787A 1934-11-22 1947-07-17 IMPROVEMENTS IN DEVICES FOR THE Pseudo-EXTENSION OF FREQUENCY BANDS Expired ES173787A3 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US754217A US2113976A (en) 1934-11-22 1934-11-22 Pseudo-extension of frequency bands

Publications (1)

Publication Number Publication Date
ES173787A3 true ES173787A3 (en) 1947-08-01

Family

ID=25033896

Family Applications (1)

Application Number Title Priority Date Filing Date
ES173787A Expired ES173787A3 (en) 1934-11-22 1947-07-17 IMPROVEMENTS IN DEVICES FOR THE Pseudo-EXTENSION OF FREQUENCY BANDS

Country Status (2)

Country Link
US (1) US2113976A (en)
ES (1) ES173787A3 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5640712A (en) * 1995-05-24 1997-06-24 Hansen; Brian J. Batting glove with shield
US6285767B1 (en) 1998-09-04 2001-09-04 Srs Labs, Inc. Low-frequency audio enhancement system
US7031474B1 (en) 1999-10-04 2006-04-18 Srs Labs, Inc. Acoustic correction apparatus
US7277767B2 (en) 1999-12-10 2007-10-02 Srs Labs, Inc. System and method for enhanced streaming audio
US8050434B1 (en) 2006-12-21 2011-11-01 Srs Labs, Inc. Multi-channel audio enhancement system
PL2798737T3 (en) 2011-12-27 2019-05-31 Dts Inc Bass enhancement system
US9247342B2 (en) 2013-05-14 2016-01-26 James J. Croft, III Loudspeaker enclosure system with signal processor for enhanced perception of low frequency output
WO2014190140A1 (en) 2013-05-23 2014-11-27 Alan Kraemer Headphone audio enhancement system

Also Published As

Publication number Publication date
US2113976A (en) 1938-04-12

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