WO1999029085A3 - Procede et appareil de detection de tonalites - Google Patents
Procede et appareil de detection de tonalites Download PDFInfo
- Publication number
- WO1999029085A3 WO1999029085A3 PCT/RU1997/000378 RU9700378W WO9929085A3 WO 1999029085 A3 WO1999029085 A3 WO 1999029085A3 RU 9700378 W RU9700378 W RU 9700378W WO 9929085 A3 WO9929085 A3 WO 9929085A3
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- tones
- dft
- tone
- computation
- frequency resolution
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q1/00—Details of selecting apparatus or arrangements
- H04Q1/18—Electrical details
- H04Q1/30—Signalling arrangements; Manipulation of signalling currents
- H04Q1/44—Signalling arrangements; Manipulation of signalling currents using alternate current
- H04Q1/444—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies
- H04Q1/46—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies comprising means for distinguishing between a signalling current of predetermined frequency and a complex current containing that frequency, e.g. speech current
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
Abstract
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/RU1997/000378 WO1999029085A2 (fr) | 1997-11-27 | 1997-11-27 | Procede et appareil de detection de tonalites |
AU64257/98A AU6425798A (en) | 1997-11-27 | 1997-11-27 | Method and apparatus for detecting tones |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/RU1997/000378 WO1999029085A2 (fr) | 1997-11-27 | 1997-11-27 | Procede et appareil de detection de tonalites |
Publications (2)
Publication Number | Publication Date |
---|---|
WO1999029085A2 WO1999029085A2 (fr) | 1999-06-10 |
WO1999029085A3 true WO1999029085A3 (fr) | 1999-11-18 |
Family
ID=20130171
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/RU1997/000378 WO1999029085A2 (fr) | 1997-11-27 | 1997-11-27 | Procede et appareil de detection de tonalites |
Country Status (2)
Country | Link |
---|---|
AU (1) | AU6425798A (fr) |
WO (1) | WO1999029085A2 (fr) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7003093B2 (en) * | 2000-09-08 | 2006-02-21 | Intel Corporation | Tone detection for integrated telecommunications processing |
EP1329092A1 (fr) * | 2000-10-27 | 2003-07-23 | Siemens Aktiengesellschaft | Dispositif d'identification d'appel dans des terminaux de telecommunication avec interface de service analogique |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4354248A (en) * | 1979-11-28 | 1982-10-12 | Motorola, Inc. | Programmable multifrequency tone receiver |
EP0440028A2 (fr) * | 1990-01-29 | 1991-08-07 | Dialogic Corporation | Détecteur de tonalités multifréquences |
EP0575725A2 (fr) * | 1992-05-26 | 1993-12-29 | Vmx Inc. | Procédé de détection adaptatif pour l'évolution de signaux codés en multifréquence |
EP0690634A1 (fr) * | 1994-06-28 | 1996-01-03 | AT&T Corp. | Détection de tonalité avec minimisation d'identification incorrecte |
-
1997
- 1997-11-27 AU AU64257/98A patent/AU6425798A/en not_active Abandoned
- 1997-11-27 WO PCT/RU1997/000378 patent/WO1999029085A2/fr active Application Filing
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4354248A (en) * | 1979-11-28 | 1982-10-12 | Motorola, Inc. | Programmable multifrequency tone receiver |
EP0440028A2 (fr) * | 1990-01-29 | 1991-08-07 | Dialogic Corporation | Détecteur de tonalités multifréquences |
EP0575725A2 (fr) * | 1992-05-26 | 1993-12-29 | Vmx Inc. | Procédé de détection adaptatif pour l'évolution de signaux codés en multifréquence |
EP0690634A1 (fr) * | 1994-06-28 | 1996-01-03 | AT&T Corp. | Détection de tonalité avec minimisation d'identification incorrecte |
Also Published As
Publication number | Publication date |
---|---|
AU6425798A (en) | 1999-06-16 |
WO1999029085A2 (fr) | 1999-06-10 |
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