GB2084433B - Methods and apparatus for encoding and constructing signals - Google Patents

Methods and apparatus for encoding and constructing signals

Info

Publication number
GB2084433B
GB2084433B GB8127253A GB8127253A GB2084433B GB 2084433 B GB2084433 B GB 2084433B GB 8127253 A GB8127253 A GB 8127253A GB 8127253 A GB8127253 A GB 8127253A GB 2084433 B GB2084433 B GB 2084433B
Authority
GB
United Kingdom
Prior art keywords
signals
symbols
methods
signal
encoding
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
GB8127253A
Other versions
GB2084433A (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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB2084433A publication Critical patent/GB2084433A/en
Application granted granted Critical
Publication of GB2084433B publication Critical patent/GB2084433B/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
    • G10L25/00—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00

Landscapes

  • Engineering & Computer Science (AREA)
  • Computational Linguistics (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)

Abstract

Where a signal is represented by a succession of first and second signals representing respective characteristics of portions of the signal waveform and the first and second signals are drawn from respective sets of primary symbols, the apparatus and methods described may be used to effect a reduction in the number of symbols used. First signals in the form of quantised durations of half cycles of a signal to be encoded are derived by zero logic 12 and second signals in the form of a number of events in a half cycle are derived by event logic 13. On application to a map circuit 15, the number of secondary symbols required in a set capable of representing each half cycle is reduced compared with the number of primary symbols (quanta and events). Methods and apparatus for reconstructing signals encoded by secondary symbols are also described.
GB8127253A 1978-04-04 1979-03-29 Methods and apparatus for encoding and constructing signals Expired GB2084433B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1313578 1978-04-04

Publications (2)

Publication Number Publication Date
GB2084433A GB2084433A (en) 1982-04-07
GB2084433B true GB2084433B (en) 1982-11-24

Family

ID=10017470

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8127253A Expired GB2084433B (en) 1978-04-04 1979-03-29 Methods and apparatus for encoding and constructing signals

Country Status (1)

Country Link
GB (1) GB2084433B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2145864B (en) * 1983-09-01 1987-09-03 King Reginald Alfred Voice recognition
US6301562B1 (en) 1999-04-27 2001-10-09 New Transducers Limited Speech recognition using both time encoding and HMM in parallel

Also Published As

Publication number Publication date
GB2084433A (en) 1982-04-07

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Legal Events

Date Code Title Description
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)
PE20 Patent expired after termination of 20 years

Effective date: 19990328