TW200642428A - Wireless telephone having multiple microphones - Google Patents
Wireless telephone having multiple microphonesInfo
- Publication number
- TW200642428A TW200642428A TW094145526A TW94145526A TW200642428A TW 200642428 A TW200642428 A TW 200642428A TW 094145526 A TW094145526 A TW 094145526A TW 94145526 A TW94145526 A TW 94145526A TW 200642428 A TW200642428 A TW 200642428A
- Authority
- TW
- Taiwan
- Prior art keywords
- microphone
- audio signal
- wireless telephone
- multiple microphones
- signal
- Prior art date
Links
- 230000005236 sound signal Effects 0.000 abstract 8
Classifications
-
- 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
-
- 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
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G3/00—Gain control in amplifiers or frequency changers
- H03G3/20—Automatic control
- H03G3/30—Automatic control in amplifiers having semiconductor devices
- H03G3/32—Automatic control in amplifiers having semiconductor devices the control being dependent upon ambient noise level or sound level
-
- 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)
- Computational Linguistics (AREA)
- Quality & Reliability (AREA)
- Health & Medical Sciences (AREA)
- Audiology, Speech & Language Pathology (AREA)
- Human Computer Interaction (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Telephone Function (AREA)
- Circuit For Audible Band Transducer (AREA)
- Telephone Set Structure (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/018,921 US20060133621A1 (en) | 2004-12-22 | 2004-12-22 | Wireless telephone having multiple microphones |
Publications (1)
Publication Number | Publication Date |
---|---|
TW200642428A true TW200642428A (en) | 2006-12-01 |
Family
ID=36101459
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
TW094145526A TW200642428A (en) | 2004-12-22 | 2005-12-21 | Wireless telephone having multiple microphones |
Country Status (5)
Country | Link |
---|---|
US (2) | US20060133621A1 (zh) |
EP (1) | EP1675365B1 (zh) |
CN (2) | CN100588210C (zh) |
DE (1) | DE602005014535D1 (zh) |
TW (1) | TW200642428A (zh) |
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-
2004
- 2004-12-22 US US11/018,921 patent/US20060133621A1/en not_active Abandoned
-
2005
- 2005-10-13 DE DE200560014535 patent/DE602005014535D1/de active Active
- 2005-10-13 EP EP20050022377 patent/EP1675365B1/en not_active Not-in-force
- 2005-12-19 CN CN 200510137075 patent/CN100588210C/zh not_active Expired - Fee Related
- 2005-12-20 CN CN 200510135860 patent/CN100588209C/zh not_active Expired - Fee Related
- 2005-12-21 TW TW094145526A patent/TW200642428A/zh unknown
-
2009
- 2009-04-29 US US12/432,302 patent/US8948416B2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
US20090209290A1 (en) | 2009-08-20 |
US8948416B2 (en) | 2015-02-03 |
EP1675365A1 (en) | 2006-06-28 |
CN100588209C (zh) | 2010-02-03 |
DE602005014535D1 (de) | 2009-07-02 |
CN1794757A (zh) | 2006-06-28 |
CN1794758A (zh) | 2006-06-28 |
US20060133621A1 (en) | 2006-06-22 |
EP1675365B1 (en) | 2009-05-20 |
CN100588210C (zh) | 2010-02-03 |
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