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
  • H04B1/06—Receivers
  • H04B1/10—Means associated with receiver for limiting or suppressing noise or interference
• • 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
  • G10L21/0272—Voice signal separating
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
  • H04R27/00—Public address systems
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
  • H04R3/00—Circuits for transducers, loudspeakers or microphones
  • H04R3/02—Circuits for transducers, loudspeakers or microphones for preventing acoustic reaction, i.e. acoustic oscillatory feedback
• • 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
  • G10L21/0216—Noise filtering characterised by the method used for estimating noise
  • G10L2021/02161—Number of inputs available containing the signal or the noise to be suppressed
  • G10L2021/02165—Two microphones, one receiving mainly the noise signal and the other one mainly the speech signal

Landscapes

• Engineering & Computer Science (AREA)
• Signal Processing (AREA)
• Acoustics & Sound (AREA)
• Physics & Mathematics (AREA)
• Health & Medical Sciences (AREA)
• Quality & Reliability (AREA)
• Otolaryngology (AREA)
• Computational Linguistics (AREA)
• General Health & Medical Sciences (AREA)
• Audiology, Speech & Language Pathology (AREA)
• Human Computer Interaction (AREA)
• Multimedia (AREA)
• Computer Networks & Wireless Communication (AREA)
• Circuit For Audible Band Transducer (AREA)
• Stereo-Broadcasting Methods (AREA)
• Stereophonic System (AREA)

Applications Claiming Priority (1)

Publications (1)

Family

ID=9488381

Family Applications (1)

Country Status (6)

Families Citing this family (6)

Family Cites Families (13)

• 1997
  • 1997-01-09 US US08/781,572 patent/US6256394B1/en not_active Expired - Fee Related
  • 1997-01-16 EP EP97200101A patent/EP0786920B1/de not_active Expired - Lifetime
  • 1997-01-16 DE DE69731133T patent/DE69731133T2/de not_active Expired - Fee Related
  • 1997-01-21 SG SG1997000138A patent/SG55269A1/en unknown
  • 1997-01-21 KR KR1019970001555A patent/KR100455968B1/ko not_active IP Right Cessation
  • 1997-01-22 JP JP9009662A patent/JPH09204195A/ja active Pending

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