GB8904471D0 - Audio systems - Google Patents

Audio systems

Info

Publication number
GB8904471D0
GB8904471D0 GB8904471A GB8904471A GB8904471D0 GB 8904471 D0 GB8904471 D0 GB 8904471D0 GB 8904471 A GB8904471 A GB 8904471A GB 8904471 A GB8904471 A GB 8904471A GB 8904471 D0 GB8904471 D0 GB 8904471D0
Authority
GB
United Kingdom
Prior art keywords
audio systems
audio
systems
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.)
Withdrawn
Application number
GB8904471A
Other versions
GB2229068A (en
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.)
Open University
Original Assignee
Open University
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 Open University filed Critical Open University
Priority to GB8904471A priority Critical patent/GB2229068A/en
Publication of GB8904471D0 publication Critical patent/GB8904471D0/en
Publication of GB2229068A publication Critical patent/GB2229068A/en
Withdrawn legal-status Critical Current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
    • H04B1/662—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 using a time/frequency relationship, e.g. time compression or expansion
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
    • G10L21/00—Processing of the speech or voice signal to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
    • G10L21/04—Time compression or expansion
GB8904471A 1989-02-28 1989-02-28 Playing back recorded speech at faster rate with pitch reduction Withdrawn GB2229068A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB8904471A GB2229068A (en) 1989-02-28 1989-02-28 Playing back recorded speech at faster rate with pitch reduction

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8904471A GB2229068A (en) 1989-02-28 1989-02-28 Playing back recorded speech at faster rate with pitch reduction

Publications (2)

Publication Number Publication Date
GB8904471D0 true GB8904471D0 (en) 1989-04-12
GB2229068A GB2229068A (en) 1990-09-12

Family

ID=10652409

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8904471A Withdrawn GB2229068A (en) 1989-02-28 1989-02-28 Playing back recorded speech at faster rate with pitch reduction

Country Status (1)

Country Link
GB (1) GB2229068A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2689291B1 (en) * 1992-03-27 1997-03-28 Antoine Sorba PROCESS FOR PROCESSING A SOUND SIGNAL, ESPECIALLY A SPEECH OR MUSIC SIGNAL, AND CORRESPONDING APPLICATIONS.
GB9420913D0 (en) * 1994-10-17 1994-11-30 Spies Ronald W Data compression transmission and receiving apparatus to economise on call time
GB2305830B (en) * 1995-09-30 1999-09-22 Ibm Voice processing system and method

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3816664A (en) * 1971-09-28 1974-06-11 R Koch Signal compression and expansion apparatus with means for preserving or varying pitch
GB1407196A (en) * 1971-11-16 1975-09-24 British Broadcasting Corp Apparatus for changing signal pitch
GB1356645A (en) * 1971-12-16 1974-06-12 Standard Telephones Cables Ltd Speech processor
BE795386A (en) * 1972-02-15 1973-08-13 Philips Nv CIRCUIT ALLOWING THE REPRODUCTION OF INFORMATION AT A PACE WHICH DIFFERS FROM THAT AT WHICH THE RECORDING OF THIS INFORMATION TAKEN PLACE
US4406001A (en) * 1980-08-18 1983-09-20 The Variable Speech Control Company ("Vsc") Time compression/expansion with synchronized individual pitch correction of separate components
JPS60501477A (en) * 1983-06-03 1985-09-05 ザ・ヴアリアブル・スピ−チ・コントロ−ル・カンパニイ Method and pitch conversion device for changing the pitch of an audio signal

Also Published As

Publication number Publication date
GB2229068A (en) 1990-09-12

Similar Documents

Publication Publication Date Title
EP0410352A3 (en) Loudspeaker system
IL92745A0 (en) Range limiting system
GB2239360B (en) Audio reproduction system
GB2305323B (en) Ranging systems
HK1006984A1 (en) Moling system
EP0333133A3 (en) Speaker system
AU5225590A (en) Speaker system
GB8810178D0 (en) Antipilferage systems
EP0424908A3 (en) Wiring-pattern-determination system
GB8905852D0 (en) Telephone systems
EP0339425A3 (en) Speaker system
GB2303754B (en) Ranging systems
GB2270595B (en) An audio system
GB2240449B (en) Television systems
GB8907725D0 (en) Entertainment systems
EP0417969A3 (en) Tape system
GB8904471D0 (en) Audio systems
GB8928352D0 (en) Loudspeaker system
GB2238206B (en) Speaker system
AU5847990A (en) Acoustic-ceiling system
GB8919188D0 (en) Telephone systems
EP0435300A3 (en) Sound equipment system
GB9024206D0 (en) Stereo sound system
GB8929298D0 (en) Facing system
ZA892873B (en) Speaker system

Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)