[go: up one dir, main page]

Ihle et al., 1997 - Google Patents

Integration of noise reduction and echo attenuation for handset-free communication

Ihle et al., 1997

View PDF
Document ID
7483449292803879307
Author
Ihle M
Kroschel K
Publication year
Publication venue
Proc. Intl. Workshop on Acoustic Echo and Noise Control

External Links

Snippet

In this paper a front-end for handset-free telecommunication is presented, which combines noise reduction and echo attenuation, exploiting phenomena of hearing physiology. Simple and robust techniques for the adaptation to the speaker render a system which can be used …
Continue reading at www.iwaenc.org (PDF) (other versions)

Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
    • G10L21/00—Processing of the speech or voice signal 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
    • G10L2021/02166—Microphone arrays; Beamforming
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
    • G10L21/00—Processing of the speech or voice signal 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
    • G10L21/0232—Processing in the frequency domain
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M9/00—Interconnection arrangements not involving centralised switching
    • H04M9/08—Two-way loud-speaking telephone systems with means for suppressing echoes or otherwise conditioning for one or other direction of traffic
    • H04M9/082—Two-way loud-speaking telephone systems with means for suppressing echoes or otherwise conditioning for one or other direction of traffic using echo cancellers
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/16—Methods or devices for protecting against, or damping of, acoustic waves, e.g. sound
    • G10K11/175—Methods or devices for protecting against, or damping of, acoustic waves, e.g. sound using interference effects; Masking sound
    • G10K11/178—Methods or devices for protecting against, or damping of, acoustic waves, e.g. sound using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/02—Details
    • H04B3/20—Reducing echo effects or singing; Opening or closing transmitting path; Conditioning for transmission in one direction or the other
    • H04B3/23—Reducing echo effects or singing; Opening or closing transmitting path; Conditioning for transmission in one direction or the other using a replica of transmitted signal in the time domain, e.g. echo cancellers
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
    • G10L19/00—Speech or audio signal analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signal, using source filter models or psychoacoustic analysis
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/42—Systems providing special services or facilities to subscribers
    • H04M3/56—Arrangements for connecting several subscribers to a common circuit, i.e. affording conference facilities

Similar Documents

Publication Publication Date Title
US9992572B2 (en) Dereverberation system for use in a signal processing apparatus
JP4954334B2 (en) Apparatus and method for calculating filter coefficients for echo suppression
US9699552B2 (en) Echo suppression comprising modeling of late reverberation components
EP0932142B1 (en) Integrated vehicle voice enhancement system and hands-free cellular telephone system
Hänsler et al. Speech and audio processing in adverse environments
Gustafsson et al. A psychoacoustic approach to combined acoustic echo cancellation and noise reduction
EP1855456B1 (en) Echo reduction in time-variant systems
Gustafsson et al. Combined acoustic echo control and noise reduction for hands-free telephony
EP0821513B1 (en) Sub-band acoustic echo canceller
CN1719516B (en) Adaptive filter device and adaptive filtering method
KR100595799B1 (en) Signal Noise Reduction by Spectral Subtraction Using Spectral Dependent Exponential Gain Function Averaging
JP2002501337A (en) Method and apparatus for providing comfort noise in a communication system
EP1210814B1 (en) Methods and apparatus for improving adaptive filter performance by inclusion of inaudible information
KR100842590B1 (en) Method and apparatus for canceling acoustic echo in a mobile terminal
Makino Stereophonic acoustic echo cancellation: An overview and recent solutions
Ihle et al. Integration of noise reduction and echo attenuation for handset-free communication
Steinert et al. Hands-free system with low-delay subband acoustic echo control and noise reduction
EP1521241A1 (en) Transmission of speech coding parameters with echo cancellation
Gustafsson et al. Combined residual echo and noise reduction: A novel psychoacoustically motivated algorithm
Hussain et al. Multi-sensor sub-band adaptive noise cancellation for speech enhancement in an automobile environment
Kremmer Contribution to a GSM handsfree system operating in the time domain
RU2485607C2 (en) Apparatus and method for computing filter coefficients for echo suppression
Habets et al. Dereverberation and residual echo suppression in noisy environments
Gustafsson Speech enhancement for mobile communications
AU2011322792B9 (en) Echo suppression comprising modeling of late reverberation components