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DOUBLE INTEGRATION AND EXPONENTIAL DELTA
CALCULATION OF QUANTIZATION NOISE
SLOPE OVERLOAD NOISE IN LINEAR D M SYSTEMS
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A-law adaptive amplitude analogue signal applied asynchronous autocorrelation function band-limited binary signal bit rate clock periods clock rate coefficients companded companded d.m. constant Curve d.m. codec d.m. encoder delta modulation system delta-sigma modulator distortion double integration dynamic range effect Equation exponential feedback loop filter F0 frequency hold circuit impulse increase infinite staircase input signal x(t linear delta modulator logic low-pass low-pass filter magnitude maximum mean square value message band monostable multi-level d.m. multiplier negative non-linear Nyquist rate occurs order c.f.d.m. output signal overload characteristic p.c.m. system peak polarity produce pulse code modulation quantization levels quantization noise RC circuit sample and hold sampling instant shift register shown in Figure signal-to-noise ratio sinusoid sinusoidal input slope of x(t slope overload spectral density function speech signal staircase function step-size syllabically companded tion transfer function voltage waveform y(t weighting sequence white noise x(tt zero crossings