SE321958B - - Google Patents

Info

Publication number
SE321958B
SE321958B SE13920/66A SE1392066A SE321958B SE 321958 B SE321958 B SE 321958B SE 13920/66 A SE13920/66 A SE 13920/66A SE 1392066 A SE1392066 A SE 1392066A SE 321958 B SE321958 B SE 321958B
Authority
SE
Sweden
Prior art keywords
multivibrator
noise
automatic gain
gain control
ring
Prior art date
Application number
SE13920/66A
Other languages
English (en)
Inventor
G Clapper
Original Assignee
Ibm
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 Ibm filed Critical Ibm
Publication of SE321958B publication Critical patent/SE321958B/xx

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
    • G10L21/00—Speech or voice signal processing techniques to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
    • G10L21/02—Speech enhancement, e.g. noise reduction or echo cancellation
    • G10L21/0208—Noise filtering
    • 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
    • G10L15/00—Speech recognition
    • 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
    • G10L25/03—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00 characterised by the type of extracted parameters
    • G10L25/15—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00 characterised by the type of extracted parameters the extracted parameters being formant information

Landscapes

  • Engineering & Computer Science (AREA)
  • Computational Linguistics (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Quality & Reliability (AREA)
  • Signal Processing (AREA)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
  • Amplifiers (AREA)
  • Control Of Amplification And Gain Control (AREA)
  • Noise Elimination (AREA)
  • Electrically Operated Instructional Devices (AREA)
  • Prostheses (AREA)
SE13920/66A 1965-10-13 1966-10-13 SE321958B (enrdf_load_stackoverflow)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US495427A US3418429A (en) 1965-10-13 1965-10-13 Speech analysis system

Publications (1)

Publication Number Publication Date
SE321958B true SE321958B (enrdf_load_stackoverflow) 1970-03-23

Family

ID=23968609

Family Applications (1)

Application Number Title Priority Date Filing Date
SE13920/66A SE321958B (enrdf_load_stackoverflow) 1965-10-13 1966-10-13

Country Status (8)

Country Link
US (1) US3418429A (enrdf_load_stackoverflow)
BE (1) BE687178A (enrdf_load_stackoverflow)
CH (1) CH452913A (enrdf_load_stackoverflow)
ES (1) ES331289A1 (enrdf_load_stackoverflow)
FR (1) FR1494395A (enrdf_load_stackoverflow)
GB (1) GB1160593A (enrdf_load_stackoverflow)
NL (1) NL148731B (enrdf_load_stackoverflow)
SE (1) SE321958B (enrdf_load_stackoverflow)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2291259A1 (fr) * 1974-11-12 1976-06-11 Raffinage Cie Francaise Suspensions aqueuses stabilisees d'asphaltes durs et application de ces suspensions au preenrobage d'agregats pour enrobes bitumeux
GB2196460B (en) * 1986-10-03 1991-05-15 Ricoh Kk Methods for comparing an input voice pattern with a registered voice pattern and voice recognition systems
US5231670A (en) * 1987-06-01 1993-07-27 Kurzweil Applied Intelligence, Inc. Voice controlled system and method for generating text from a voice controlled input
EP0553906B1 (en) * 1992-01-21 1998-04-08 Koninklijke Philips Electronics N.V. Method and apparatus for sound enhancement with envelopes of multiband passed signals feeding comb filters

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3126449A (en) * 1964-03-24 Shirman
US3109066A (en) * 1959-12-15 1963-10-29 Bell Telephone Labor Inc Sound control system
US3261916A (en) * 1962-11-16 1966-07-19 Ibm Adjustable recognition system

Also Published As

Publication number Publication date
ES331289A1 (es) 1967-07-01
DE1547030A1 (de) 1969-11-20
FR1494395A (fr) 1967-09-08
NL148731B (nl) 1976-02-16
US3418429A (en) 1968-12-24
NL6614325A (enrdf_load_stackoverflow) 1967-04-14
CH452913A (de) 1968-03-15
GB1160593A (en) 1969-08-06
DE1547030B2 (de) 1976-03-04
BE687178A (enrdf_load_stackoverflow) 1967-03-01

Similar Documents

Publication Publication Date Title
GB1279375A (en) Improvements in or relating to threshold voltage determination systems and character recognition systems incorporating threshold voltage determination systems
GB1046111A (en) Improvements in and relating to apparatus for the accurate determination of the heartbeat frequency
GB1326586A (en) Arrangement for testing the strength and durability of hydraulic
GB1507177A (en) Method of and apparatus for sonar signal texture enhancement
NL6614325A (enrdf_load_stackoverflow)
GB1363892A (en) Echo sounding apparatus with automatically regulated receiver gain
GB1353818A (en) Method and system for detecting the presence on an object of a medium in the path of a sound or light wave
ES366443A1 (es) Procedimiento y dispositivo para determinar la constitucionde la situacion de una via.
GB1497178A (en) Control signal magnetic recording and/or reproducing apparatus
GB1450245A (en) Coke cutting with aid of sensing devices
GB1270748A (en) D.c. rope testing
GB1154129A (en) Speech Analysing Apparatus.
GB1207199A (en) Optical sensing apparatus
GB962327A (en) Improvements in or relating to grooved magnetisable records
GB1229500A (enrdf_load_stackoverflow)
GB1056403A (en) Improvements in or relating to apparatus for reproducing speech signals
GB1198148A (en) Control System for Re-Recording Apparatus
GB897044A (en) Improved magnetic recording system
AU269374B2 (en) Improvements in or relating to arrangement for amplifying sound signals anda modified signal derived from these signals
AU2699763A (en) Improvements in or relating to arrangement for amplifying sound signals anda modified signal derived from these signals
JPS55118255A (en) Output control circuit
SU469928A1 (ru) Устройство дл усилени сигналов на фоне шумов
SU480175A1 (ru) Усилитель записи
JPS5736405A (ja) Rokuonsochi
GB1184000A (en) Reel Servo System