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MX9703511A - Aparato de cancelacion de ruido. - Google Patents

Aparato de cancelacion de ruido.

Info

Publication number
MX9703511A
MX9703511A MX9703511A MX9703511A MX9703511A MX 9703511 A MX9703511 A MX 9703511A MX 9703511 A MX9703511 A MX 9703511A MX 9703511 A MX9703511 A MX 9703511A MX 9703511 A MX9703511 A MX 9703511A
Authority
MX
Mexico
Prior art keywords
microphone
speech
background noise
signal
noise cancellation
Prior art date
Application number
MX9703511A
Other languages
English (en)
Other versions
MXPA97003511A (es
Inventor
Douglas Andrea
Martin Topf
Original Assignee
Andrea Electronics Corp
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 Andrea Electronics Corp filed Critical Andrea Electronics Corp
Publication of MX9703511A publication Critical patent/MX9703511A/es
Publication of MXPA97003511A publication Critical patent/MXPA97003511A/es

Links

Classifications

    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/60—Substation equipment, e.g. for use by subscribers including speech amplifiers
    • H04M1/6008—Substation equipment, e.g. for use by subscribers including speech amplifiers in the transmitter circuit
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/04—Supports for telephone transmitters or receivers
    • H04M1/05—Supports for telephone transmitters or receivers specially adapted for use on head, throat or breast
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/19—Arrangements of transmitters, receivers, or complete sets to prevent eavesdropping, to attenuate local noise or to prevent undesired transmission; Mouthpieces or receivers specially adapted therefor
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/10—Earpieces; Attachments therefor ; Earphones; Monophonic headphones
    • H04R1/1083—Reduction of ambient noise
    • 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
    • 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
    • H04B1/12—Neutralising, balancing, or compensation arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2201/00—Details of transducers, loudspeakers or microphones covered by H04R1/00 but not provided for in any of its subgroups
    • H04R2201/10—Details of earpieces, attachments therefor, earphones or monophonic headphones covered by H04R1/10 but not provided for in any of its subgroups
    • H04R2201/107—Monophonic and stereophonic headphones with microphone for two-way hands free communication
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2201/00—Details of transducers, loudspeakers or microphones covered by H04R1/00 but not provided for in any of its subgroups
    • H04R2201/40—Details of arrangements for obtaining desired directional characteristic by combining a number of identical transducers covered by H04R1/40 but not provided for in any of its subgroups
    • H04R2201/403—Linear arrays of transducers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R29/00—Monitoring arrangements; Testing arrangements
    • H04R29/004—Monitoring arrangements; Testing arrangements for microphones
    • H04R29/005—Microphone arrays
    • H04R29/006—Microphone matching
    • 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
    • H04R3/005—Circuits for transducers, loudspeakers or microphones for combining the signals of two or more microphones

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • General Health & Medical Sciences (AREA)
  • Telephone Set Structure (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
  • Noise Elimination (AREA)
  • Circuit For Audible Band Transducer (AREA)

Abstract

Un aparato para reducir el ruido acustico de fondo para el uso comun con un conjunto receptor transmisor telefonico (10) o un dispositivo (100) de microfono en soporte portamicrofono o un conjunto receptor-transmisor telefonico (401) en soporte portamicrofono o similar. El aparato incluye un primero (12) y un segundo (14) microfonos que se arreglan tal que el primer microfono (12) recibe una entrada deseada de habla y el ruido de fondo presente en la vecindad del habla, y el segundo microfono (14) recibe substancialmente solo el ruido de fondo. El ruido de fondo del segundo microfono (14) se convierte en una señal eléctrica correspondiente y se substrae (16) de una señal que corresponde al habla y el ruido de fondo obtenido del señal que representa substancialmente el habla.
MXPA/A/1997/003511A 1994-11-14 1997-05-13 Aparato de cancelacion de ruido MXPA97003511A (es)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US08339126 1994-11-14
US08/339,126 US5673325A (en) 1992-10-29 1994-11-14 Noise cancellation apparatus
PCT/US1995/014756 WO1996015541A1 (en) 1994-11-14 1995-11-14 Noise cancellation apparatus

Publications (2)

Publication Number Publication Date
MX9703511A true MX9703511A (es) 1997-07-31
MXPA97003511A MXPA97003511A (es) 1997-12-01

Family

ID=

Also Published As

Publication number Publication date
EP0792568A4 (en) 1998-07-08
FI972048A0 (fi) 1997-05-14
WO1996015541A1 (en) 1996-05-23
CA2204880A1 (en) 1996-05-23
CA2204880C (en) 2001-05-29
BR9509782A (pt) 1998-05-26
EP0792568A1 (en) 1997-09-03
AU4235996A (en) 1996-06-06
FI972048A7 (fi) 1997-07-07
KR970707665A (ko) 1997-12-01
FI972048L (fi) 1997-07-07
JPH10509849A (ja) 1998-09-22
CN1172422A (zh) 1998-02-04
US5673325A (en) 1997-09-30

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