Results 251 to 260 of about 44,631 (307)

A CMOS Broadband Low-Noise Mixer With Noise Cancellation

IEEE Transactions on Microwave Theory and Techniques, 2010
This paper presents a broadband low-noise mixer in CMOS 0.13-?m technology that operates between 1-5.5 GHz. The mixer has a Gilbert cell configuration that employs broadband low-noise transconductors designed using the noise-cancelling technique used in low-noise amplifer designs.
CARLOS E Saavedra
exaly   +2 more sources

Broadband active noise compressor

IEEE Signal Processing Letters, 1998
A broadband active noise compressor (ANCP) is presented to adapt the active noise equalization (ANE) technique suitable for practical usage. Compared to the existing broadband ANE system, the novel ANCP not only has the ability to shape the residual noise spectrum, but can also automatically adjust the residual noise power.
Jin Wei Feng, Woon-Seng Gan
openaire   +1 more source

Infants’ sensitivity to broadband noise

The Journal of the Acoustical Society of America, 1996
Infants have higher pure-tone thresholds than adults. One explanation is that infants do not adopt the frequency-selective listening strategy that adults use when detecting tones. In contrast to other models of infants’ immature sensitivity, the listening strategy account predicts that infants will be more sensitive to broadband sounds, relative to ...
L A, Werner, K, Boike
openaire   +2 more sources

Broadband adaptive noise equalizer

IEEE Signal Processing Letters, 1996
This paper presents a broadband adaptive noise equalizer (ANE) with noise shaping capability. The residual noise spectrum can be completely controlled by inserting a shaping filter in both the canceling and balancing branches. This algorithm is analyzed in steady state and verified by computer simulations.
Sen M. Kuo, Yajie Yang
openaire   +1 more source

High-Frequency Broadband Rotor Noise

AIAA Journal, 1976
A method has been developed to find the absolute spectral level of high frequency far field sound of a rotor in terms of random load fluctuations on the rotor blades. The analysis deals with frequencies where the radiated sound spectrum is smooth, i.e., above 300 to 400 Hz for a typical helicopter.
George, A. R., Kim, Y. N.
openaire   +1 more source

The influence of broadband noise on the precedence effect

The Journal of the Acoustical Society of America, 1998
This study examined the influence of background noise on the localization of lead-lag noise-burst pairs and on echo threshold for the same stimuli. Experiments were conducted in an anechoic chamber with a leading stimulus delivered from a loudspeaker at 45° to the right of center and a lagging stimulus from 45° left.
Chiang, YC, Freyman, RL
openaire   +2 more sources

Broadband noise and distortion cancelling low noise amplifier

2017 IEEE 60th International Midwest Symposium on Circuits and Systems (MWSCAS), 2017
In this paper, a new broadband low noise amplifier (LNA) is proposed. The LNA utilizes a composite NMOS/PMOS cross-coupled transistor pair and a difference amplifier to in-crease the linearity while reducing the noise figure. The introduced approach provides partial cancellation of distortion and noise generated by the input transistors, hence ...
Ahmad Qassem Dawoud, Mohamed El-Nozahi, Hani F. Ragai   +2 more
openaire   +1 more source

Localization of aerial broadband noise by pinnipeds

The Journal of the Acoustical Society of America, 2004
Although many pinnipeds (seals, sea lions, and walruses) emit broadband calls on land as part of their communication system, few studies have addressed these animals’ ability to localize aerial broadband sounds. In this study, the aerial sound localization acuities of a female northern elephant seal (Mirounga angustirostris), a male harbor seal (Phoca ...
Marla M, Holt, Ronald J, Schusterman, Brandon L, Southall, David, Kastak   +3 more
openaire   +2 more sources

Mode noise in broadband CARS spectroscopy

Applied Optics, 1985
An analysis of broadband dye laser spectral noise is presented. Particular reference is given to the effect of such noise on broadband single-pulse CARS spectra. A simple theory which accurately predicts both dye laser and CARS spectral noise is presented. Methods for reducing CARS spectral noise are identified and discussed.
D A, Greenhalgh, S T, Whittley
openaire   +2 more sources

Intensity resolution and loudness in broadband noise

The Journal of the Acoustical Society of America, 1995
Intensity resolution and loudness matching behavior for pure tones was studied in quiet and in two levels of noise (15 and 40 dB spectrum level) to test the predictions of several models for relating these phenomena. Five normally hearing listeners participated.
R S, Schlauch, S, Harvey, N, Lanthier
openaire   +2 more sources