WO2003092255A8 - Audio bandwidth extending system and method - Google Patents

Audio bandwidth extending system and method

Info

Publication number
WO2003092255A8
WO2003092255A8 PCT/EP2003/003977 EP0303977W WO03092255A8 WO 2003092255 A8 WO2003092255 A8 WO 2003092255A8 EP 0303977 W EP0303977 W EP 0303977W WO 03092255 A8 WO03092255 A8 WO 03092255A8
Authority
WO
WIPO (PCT)
Prior art keywords
audio signal
branch
bandwidth
audio
signal
Prior art date
Application number
PCT/EP2003/003977
Other languages
French (fr)
Other versions
WO2003092255A1 (en
Inventor
Peter Koerner
Original Assignee
Sony Ericsson Mobile Comm Ab
Peter Koerner
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
Priority claimed from EP02445053A external-priority patent/EP1357733A1/en
Application filed by Sony Ericsson Mobile Comm Ab, Peter Koerner filed Critical Sony Ericsson Mobile Comm Ab
Priority to AU2003222817A priority Critical patent/AU2003222817A1/en
Priority to US10/511,860 priority patent/US20050175185A1/en
Publication of WO2003092255A1 publication Critical patent/WO2003092255A1/en
Publication of WO2003092255A8 publication Critical patent/WO2003092255A8/en

Links

Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10H—ELECTROPHONIC MUSICAL INSTRUMENTS; INSTRUMENTS IN WHICH THE TONES ARE GENERATED BY ELECTROMECHANICAL MEANS OR ELECTRONIC GENERATORS, OR IN WHICH THE TONES ARE SYNTHESISED FROM A DATA STORE
    • G10H1/00—Details of electrophonic musical instruments
    • G10H1/02—Means for controlling the tone frequencies, e.g. attack or decay; Means for producing special musical effects, e.g. vibratos or glissandos
    • G10H1/06—Circuits for establishing the harmonic content of tones, or other arrangements for changing the tone colour
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M19/00—Current supply arrangements for telephone systems
    • H04M19/02—Current supply arrangements for telephone systems providing ringing current or supervisory tones, e.g. dialling tone or busy tone
    • H04M19/04—Current supply arrangements for telephone systems providing ringing current or supervisory tones, e.g. dialling tone or busy tone the ringing-current being generated at the substations
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M9/00—Arrangements for interconnection not involving centralised switching
    • H04M9/08—Two-way loud-speaking telephone systems with means for conditioning the signal, e.g. for suppressing echoes for one or both directions of traffic
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10H—ELECTROPHONIC MUSICAL INSTRUMENTS; INSTRUMENTS IN WHICH THE TONES ARE GENERATED BY ELECTROMECHANICAL MEANS OR ELECTRONIC GENERATORS, OR IN WHICH THE TONES ARE SYNTHESISED FROM A DATA STORE
    • G10H2210/00—Aspects or methods of musical processing having intrinsic musical character, i.e. involving musical theory or musical parameters or relying on musical knowledge, as applied in electrophonic musical tools or instruments
    • G10H2210/155—Musical effects
    • G10H2210/265—Acoustic effect simulation, i.e. volume, spatial, resonance or reverberation effects added to a musical sound, usually by appropriate filtering or delays
    • G10H2210/271—Sympathetic resonance, i.e. adding harmonics simulating sympathetic resonance from other strings
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10H—ELECTROPHONIC MUSICAL INSTRUMENTS; INSTRUMENTS IN WHICH THE TONES ARE GENERATED BY ELECTROMECHANICAL MEANS OR ELECTRONIC GENERATORS, OR IN WHICH THE TONES ARE SYNTHESISED FROM A DATA STORE
    • G10H2240/00—Data organisation or data communication aspects, specifically adapted for electrophonic musical tools or instruments
    • G10H2240/171—Transmission of musical instrument data, control or status information; Transmission, remote access or control of music data for electrophonic musical instruments
    • G10H2240/201—Physical layer or hardware aspects of transmission to or from an electrophonic musical instrument, e.g. voltage levels, bit streams, code words or symbols over a physical link connecting network nodes or instruments
    • G10H2240/241—Telephone transmission, i.e. using twisted pair telephone lines or any type of telephone network
    • G10H2240/251—Mobile telephone transmission, i.e. transmitting, accessing or controlling music data wirelessly via a wireless or mobile telephone receiver, analog or digital, e.g. DECT GSM, UMTS

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Telephone Function (AREA)

Abstract

The invention relates to a virtual audio bandwidth extender, and more particularly a device for increasing the perceived bandwidth of audio signals in equipment having limited bandwidth, especially in mobile telephones. The invention also relates to a communication apparatus comprising such a device. The invention provides a device for increasing the perceived bandwidth in an audio signal path with limited bandwidth, comprising: an input terminal (1) for connecting an audio signal, and an output terminal (2) for connecting a speaker unit for generating an acoustic signal. According to the invention the device comprises a splitter (3) dividing the audio path into two branches, a first branch (4) for passing a part of the audio signal substantially without processing, and a second branch (5) for processing a part of the audio signal. The second branch comprises means for producing harmonics (7, 8, 9) of the audio signal. A combiner (6) is provided for adding the harmonics produced in the second branch to the part of the signal in the first branch at the output terminal. Thereby, the bandwidth is virtually extended resulting in enhanced quality of the audio signal.
PCT/EP2003/003977 2002-04-25 2003-04-16 Audio bandwidth extending system and method WO2003092255A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AU2003222817A AU2003222817A1 (en) 2002-04-25 2003-04-16 Audio bandwidth extending system and method
US10/511,860 US20050175185A1 (en) 2002-04-25 2003-04-16 Audio bandwidth extending system and method

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
EP02445053.8 2002-04-25
EP02445053A EP1357733A1 (en) 2002-04-25 2002-04-25 Audio bandwidth extending system and method
US37883602P 2002-05-07 2002-05-07
US60/378,836 2002-05-07

Publications (2)

Publication Number Publication Date
WO2003092255A1 WO2003092255A1 (en) 2003-11-06
WO2003092255A8 true WO2003092255A8 (en) 2005-03-10

Family

ID=29271903

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2003/003977 WO2003092255A1 (en) 2002-04-25 2003-04-16 Audio bandwidth extending system and method

Country Status (2)

Country Link
AU (1) AU2003222817A1 (en)
WO (1) WO2003092255A1 (en)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0955634A (en) * 1995-08-11 1997-02-25 Yamaha Corp Harmonic addition circuit
US6023513A (en) * 1996-01-11 2000-02-08 U S West, Inc. System and method for improving clarity of low bandwidth audio systems
US6215879B1 (en) * 1997-11-19 2001-04-10 Philips Semiconductors, Inc. Method for introducing harmonics into an audio stream for improving three dimensional audio positioning
EP0994464A1 (en) * 1998-10-13 2000-04-19 Koninklijke Philips Electronics N.V. Method and apparatus for generating a wide-band signal from a narrow-band signal and telephone equipment comprising such an apparatus
FR2807255A1 (en) * 2000-04-04 2001-10-05 Koninkl Philips Electronics Nv Mobile telephone ringing tone acoustic signal generator having input digital signal converted and delay line applied/memorised with two sample sets combined/memorised and forming output signal.

Also Published As

Publication number Publication date
AU2003222817A1 (en) 2003-11-10
WO2003092255A1 (en) 2003-11-06

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