Results 241 to 250 of about 88,237 (307)
Sleep stage-specific effects of 0.75 Hz phase-synchronized rTMS and tACS on delta frequency activity during sleep. [PDF]
Sci RepTakahashi K, Kuo MF, Nitsche MA.
europepmc +1 more source
, 1969 The purpose of this thesis is to introduce Delta Modulation as an alternative to the more conventional carrier and pulse modulations, Chapter I briefly discusses the carrier and pulse modulations from the standpoint of signal - to - noise ratio, bandwidth occupancy and threshold effects.
Greig, DJ (15931910)
openaire +2 more sources
Some of the next articles are maybe not open access.
Related searches:
Related searches:
Decimation for Sigma Delta Modulation
IEEE Transactions on Communications, 1986Decimation is an important component of oversampled analog-to-digital conversion. It transforms the digitally modulated signal from short words occurring at high sampling rate to longer words at the Nyquist rate. Here we are concerned with the initial stage of decimation, where the word rate decreases to about four times the Nyquist rate.
exaly +2 more sources
, 1973 An investigation of the noise which is an inherent part of delta modulation due to the nature of the modulation process is presented. A large part of the examination of the noise consists of an investigation of the noise performance of delta modulation.
D'Emden, Francis Roblin (15930440)
openaire +2 more sources
IEEE Transactions on Acoustics, Speech, and Signal Processing, 1988
In an embedded delta modulation (EDM) encoder, a supplemental pulse-code-modulation (PCM) encoder processes the error signal of a delta modulator. The PCM and DM bit streams are multiplexed and then transmitted. The decoder adds and then filters the analog versions of the separately decoded PCM and DM signals.
Wassell, IJ, Goodman, DJ, Steele, R
openaire +2 more sources
In an embedded delta modulation (EDM) encoder, a supplemental pulse-code-modulation (PCM) encoder processes the error signal of a delta modulator. The PCM and DM bit streams are multiplexed and then transmitted. The decoder adds and then filters the analog versions of the separately decoded PCM and DM signals.
Wassell, IJ, Goodman, DJ, Steele, R
openaire +2 more sources
Delta Modulation of the Wiener Process
IEEE Transactions on Communications, 1975The analysis of the performance of a delta modulator with a Wiener process input is considered. The mean and the variance of the steady-state squared error are derived. In addition, the mean of the steady-state error of order four is calculated. It is shown that the behavior of all these moments as functions of the step size Δ and the sampling interval
Elias Masry, Stamatis Cambanis
openaire +1 more source
A digital modulator with bandpass delta-sigma modulator
Proceedings of the 30th European Solid-State Circuits Conference, 2004A digital quadrature modulator with a bandpass ??-modulator is presented that interpolates orthogonal input carriers by 16 and performs a digital quadrature modulation at carrier frequencies fs/4, ?fs/4 (fs is the sampling frequency). After quadrature modulation, the signal is converted into an analogue IF signal using a bandpass ??
Johan Sommarek +4 more
openaire +1 more source
Digital Conversion of Adaptive Delta Modulation to Linear Delta Modulation
The Journal of the Acoustical Society of America, 1971A technique is described for direct digital transformation of the channel bit stream of an adaptive delta modulator to that for a linear delta modulator. The method is simulated on a computer, and the signal-to-noise performance is measured as a function of the bit-rate expansion factor (m) required to achieve the linear delta. The results suggest that,
J. L. Flanagan, K. Shipley
openaire +1 more source