Patent
Systems, methods, apparatus, and computer-readable media for automatic control of active noise cancellation
TLDR
In this article, active noise cancellation is combined with spectrum modification of a reproduced audio signal to enhance intelligibility, and the results show that the modified audio signal is more intelligible than the original signal.Abstract:
Active noise cancellation is combined with spectrum modification of a reproduced audio signal to enhance intelligibility.read more
Citations
More filters
Patent
Systems, methods, devices, apparatus, and computer program products for audio equalization
Hyun Jin Park,Erik Visser,Jong Won Shin,Kwokleung Chan,Samir Kumar Gupta,Andre Gustavo P. Schevciw,Ren Li,Jeremy Toman +7 more
TL;DR: In this paper, the authors described methods and apparatus for generating an anti-noise signal and equalizing a reproduced audio signal (e.g., a far-end telephone signal) using information from an acoustic error signal.
Patent
Active noise cancellation decisions in a portable audio device
TL;DR: Active noise cancellation (ANC) circuitry is coupled to the input of an earpiece speaker in a portable audio device, to control the ambient acoustic noise outside of the device and that may be heard by a user as mentioned in this paper.
Patent
Systems, methods, apparatus, and computer-readable media for spatially selective audio augmentation
TL;DR: In this paper, the authors present a system, a method, an apparatus, and computer-readable media for processing a multichannel signal to produce an antinoise signal, which includes means of performing an active noise cancellation operation on a first audio input channel.
Patent
Anc for bt headphones
TL;DR: In this paper, an active noise cancellation controller for performing noise attenuation in a system over a predetermined frequency range is presented, in which a fixed feedback controller, fixed feedforward controller and adaptive feed-forward controller are arranged to, in use, provide a noise cancellation signal at the output in dependence on a reference signal received at the first input and an error signal received on the second input.
Patent
Oversight control of an adaptive noise canceler in a personal audio device
TL;DR: In this article, an adaptive noise cancellation (ANC) circuit that adaptively generates an anti-noise signal from a reference microphone signal and injects the anti noise signal into the speaker or other transducer output to cause cancellation of ambient audio sounds is presented.
References
More filters
Journal Article
A model for the prediction of thresholds, loudness, and partial loudness
TL;DR: In this paper, a model for steady sounds is described having the following stages: 1) a fixed filter representing transfer through the outer ear, 2) an excitation pattern from the physical spectrum, 3) transformation of the excitation patterns to a specific loudness pattern, 4) determination of the area under the specific loudeness pattern, 5) determination for a given ear, and 6) summation of loudness across ears.
PatentDOI
Variable gain active noise cancellation system with improved residual noise sensing
TL;DR: An active noise cancellation system as discussed by the authors includes a series of features for more effective cancellation, greater reliability, and improved stability, such as locating a residual microphone radially offset from the center of a sound generator to detect a signal more similar to that incident upon the eardrum of the user.
PatentDOI
Hearing aid device incorporating signal processing techniques
TL;DR: In this paper, a hearing compensation system for the hearing impaired comprises a plurality of bandpass filters having an input connected to an input transducer and each bandpass filter having an output connected to the input of one of a multiplicative AGC circuits.
PatentDOI
Background Noise Compensation in a Telephone Network
TL;DR: In this article, an automated method for modifying a speech signal in a telephone network by applying a gain factor which is a function of the level of background noise at a given destination, and transmitting the modified speech signal to the destination was proposed.
Patent
Headset for separation of speech signals in a noisy environment
TL;DR: In this paper, a headset is constructed to generate an acoustically distinct speech signal in a noisy acoustic environment, where a pair of spaced-apart microphones are placed near a user's mouth.