Patent
Method and apparatus for canceling noise from mixed sound
TLDR
In this paper, a method, medium, and apparatus was proposed to cancel noise from a mixed sound by extracting at least one feature vector indicating an attribute difference between the sound source signals from the noise.Abstract:
A method, medium, and apparatus canceling noise from a mixed sound. The method includes receiving sound source signals including a target sound and noise, extracting at least one feature vector indicating an attribute difference between the sound source signals from the sound source signals, calculating a suppression coefficient considering ratios of noise to the sound source signals based on the at least one extracted feature vector, and canceling the sound source signals corresponding to noise by controlling an intensity of an output signal generated from the sound source signals according to the calculated suppression coefficient. Accordingly, a clear target sound source signal can be obtained.read more
Citations
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TL;DR: In this paper, a single microphone noise estimate is derived from the primary and secondary acoustic signals, and a combined noise estimate based on the single and dual microphone noise estimates is then determined.
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TL;DR: In this article, an inter-microphone level difference (ILD) was used to attenuate noise and enhance speech. But the ILD was not used to enhance the speech of the primary acoustic signal.
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TL;DR: In this article, a primary acoustic signal is received and a speech distortion estimate is determined based on the primary acoustic signals, which is then used to derive control signals which adjust an enhancement filter.
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System and method for providing noise suppression utilizing null processing noise subtraction
Ludger Solbach,Carlo Murgia +1 more
TL;DR: In this paper, the authors present a system for noise suppression using noise subtraction processing, where a desired signal component may be calculated and subtracted from the secondary acoustic signal to obtain a noise component signal.
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Multi-Sourced Noise Suppression
TL;DR: In this article, a multi-sourced noise suppression system for the Internet of Things (IoT) is presented. But the system is not suitable for the use of speech recognition.
References
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PatentDOI
Noise cancellation apparatus
Douglas Andrea,Martin Topf +1 more
TL;DR: In this article, the authors propose an approach for reducing acoustic background noise for use with a telephone handset (10) or a boom microphone device (100) or an audio boom headset (401) or the like.
Patent
Microphone device and audio player
TL;DR: In this paper, a signal generating section generates a main signal and a noise reference signal, and a determining section determines whether a level ratio is larger than a predetermined value, and then a noise suppressing section suppresses a signal component of noise included in the main signal by using the main signals and the noise reference signals after subtraction by the subtracting section.
Patent
Near-field vector signal enhancement
TL;DR: In this paper, the authors proposed two approaches for near-field sensing of wave signals in headsets and earsets, where two or more spaced-apart microphones are placed along a line generally between the headset and the user's mouth.
Patent
Interference noise signal eliminator using a signal combining and canceling technique, particularly for generating a counter signal having the same amplitude, a 180-degree phase difference and the same time delay as a signal to be eliminated in order to eliminate the undesired signal component
Kim Nam Young,Kim Sun Jin +1 more
TL;DR: In this paper, an interference noise signal eliminator using signal combining and canceling technique is provided to prevent saturation and oscillation of an amplifier and maintaining a uniform output by eliminating an inputted feedback signal.
Patent
Apparatus and method for processing sound signal
TL;DR: In this paper, a sound processing device and a method thereof are provided to distinguish harmonic and non-harmonic regions of a sound signal precisely, and a noise reduction part(140) reduces the separated noise region according to the noise reduction index and outputs the noise-processed signal.