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EP1130577A3 - Method for the reconstruction of low speech frequencies from mid-range frequencies - Google Patents

Method for the reconstruction of low speech frequencies from mid-range frequencies Download PDF

Info

Publication number
EP1130577A3
EP1130577A3 EP01102129A EP01102129A EP1130577A3 EP 1130577 A3 EP1130577 A3 EP 1130577A3 EP 01102129 A EP01102129 A EP 01102129A EP 01102129 A EP01102129 A EP 01102129A EP 1130577 A3 EP1130577 A3 EP 1130577A3
Authority
EP
European Patent Office
Prior art keywords
frequency
frequencies
reconstruction
speech signal
mid
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
EP01102129A
Other languages
German (de)
French (fr)
Other versions
EP1130577B1 (en
EP1130577A2 (en
Inventor
Jürgen Schultz
Klaus Dr. Schaaf
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Volkswagen AG
Original Assignee
Volkswagen AG
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 Volkswagen AG filed Critical Volkswagen AG
Publication of EP1130577A2 publication Critical patent/EP1130577A2/en
Publication of EP1130577A3 publication Critical patent/EP1130577A3/en
Application granted granted Critical
Publication of EP1130577B1 publication Critical patent/EP1130577B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • G10L21/038—Speech enhancement, e.g. noise reduction or echo cancellation using band spreading techniques

Landscapes

  • Engineering & Computer Science (AREA)
  • Computational Linguistics (AREA)
  • Quality & Reliability (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Telephone Function (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)

Abstract

Die Erfindung betrifft ein Verfahren und eine Vorrichtung zur Rekonstruktion tieffrequenter Sprachanteile aus mittelhohen Frequenzanteilen, bei dem das technische Problem, für eine Wiedergabe eines gestörten Sprachsignals eine möglichst naturgetreue Wiedergabe zu ermöglichen, durch ein Verfahren gelöst wird, bei dem oberhalb einer Grenzfrequenz ω0 mindestens zwei benachbart angeordnete Frequenzanteile ωfa1, ωfa2, ... mit erhöhter Amplitude im Sprachsignal bestimmt werden und bei dem die Grundfrequenz ωg des Sprachsignals als Frequenzdifferenz zwischen den mindestens zwei benachbarten Frequenzanteilen ωfa1, ωfa2, ... bestimmt wird und bei dem mit Hilfe der ermittelten Grundfrequenz ωg und des Sprachsignals der tieffrequente Frequenzbereich unterhalb der Grenzfrequenz ωg rekonstruiert wird.The invention relates to a method and a device for the reconstruction of low-frequency speech components from medium-high frequency components, in which the technical problem of enabling the reproduction of a disrupted speech signal to be as close to nature as possible is solved by a method in which above a cut-off frequency ω 0, at least two Adjacent frequency components ω fa1 , ω fa2 , ... are determined with increased amplitude in the speech signal and in which the fundamental frequency ω g of the speech signal is determined as the frequency difference between the at least two adjacent frequency components ω fa1 , ω fa2 , ... and in which the low-frequency range below the cut-off frequency ω g is reconstructed with the aid of the determined fundamental frequency ω g and the speech signal.

Die Erfindung betrifft auch eine Vorrichtung zur Durchführung des vorgenannten Verfahrens.

Figure 00000001
The invention also relates to a device for performing the aforementioned method.
Figure 00000001
EP01102129A 2000-03-02 2001-02-01 Method for the reconstruction of low speech frequencies from mid-range frequencies Expired - Lifetime EP1130577B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10010037 2000-03-02
DE10010037A DE10010037B4 (en) 2000-03-02 2000-03-02 Method for the reconstruction of low-frequency speech components from medium-high frequency components

Publications (3)

Publication Number Publication Date
EP1130577A2 EP1130577A2 (en) 2001-09-05
EP1130577A3 true EP1130577A3 (en) 2002-09-18
EP1130577B1 EP1130577B1 (en) 2007-06-06

Family

ID=7633152

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01102129A Expired - Lifetime EP1130577B1 (en) 2000-03-02 2001-02-01 Method for the reconstruction of low speech frequencies from mid-range frequencies

Country Status (3)

Country Link
EP (1) EP1130577B1 (en)
AT (1) ATE364221T1 (en)
DE (2) DE10010037B4 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7756714B2 (en) 2006-01-31 2010-07-13 Nuance Communications, Inc. System and method for extending spectral bandwidth of an audio signal

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111863006B (en) * 2019-04-30 2024-07-16 华为技术有限公司 Audio signal processing method, audio signal processing device and earphone
CN112151065B (en) * 2019-06-28 2024-03-15 力同科技股份有限公司 Single tone signal frequency detection method, device, equipment and computer storage medium
CN113362840B (en) * 2021-06-02 2022-03-29 浙江大学 General voice information recovery device and method based on undersampled data of built-in sensor
DE102024101130B3 (en) 2024-01-16 2025-03-20 Cariad Se Method for playing digital audio data in a motor vehicle and motor vehicle

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4091237A (en) * 1975-10-06 1978-05-23 Lockheed Missiles & Space Company, Inc. Bi-Phase harmonic histogram pitch extractor
US4700390A (en) * 1983-03-17 1987-10-13 Kenji Machida Signal synthesizer

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4490843A (en) * 1982-06-14 1984-12-25 Bose Corporation Dynamic equalizing
EP0240286B1 (en) * 1986-04-01 1992-12-09 Matsushita Electric Industrial Co., Ltd. Low-pitched sound creator
JP2779886B2 (en) * 1992-10-05 1998-07-23 日本電信電話株式会社 Wideband audio signal restoration method

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4091237A (en) * 1975-10-06 1978-05-23 Lockheed Missiles & Space Company, Inc. Bi-Phase harmonic histogram pitch extractor
US4700390A (en) * 1983-03-17 1987-10-13 Kenji Machida Signal synthesizer

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7756714B2 (en) 2006-01-31 2010-07-13 Nuance Communications, Inc. System and method for extending spectral bandwidth of an audio signal

Also Published As

Publication number Publication date
DE10010037A1 (en) 2001-09-06
ATE364221T1 (en) 2007-06-15
DE50112581D1 (en) 2007-07-19
DE10010037B4 (en) 2009-11-26
EP1130577B1 (en) 2007-06-06
EP1130577A2 (en) 2001-09-05

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