Talk:Delta modulation

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Adaptive Delta Modulation (ADM)[edit]

The next version of Delta modulation (DM) is the Adaptive Delta modulation. In ADM, the step size is not fixed unlike in DM. Rather, when slope overload occurs, the step size becomes progressively larger, thereby allowing modulated signal to catch up with the modulating signal more rapidly. Thus, ADM reduces the slope overloadat the expense of increasing quantization error. Linear DM has less quantization error while more slope error. But, practically, for speech transmission, there must be as less slope error as possible and quantization error is acceptable in limits. --Krishnavedala 10:06, May 15, 2005 (UTC)

Delta Modulation[edit]

I believe the comment in the first line should be changed to delete the comment-used for transmission of voice information where quality is not of primary importance-. The section below about SBS shows that statement is not correct. I developed a Delta Mod for the SBS satellite controller that achieved full voice quality. Also the section on Applicaitons should be modified or replaced by my section on SBS Aplicaiton for the same reason. I would be happy to make the changes but am not certain I have the authority. UPCMaker — Preceding unsigned comment added by 75.93.213.123 (talk) 19:46, 25 April 2012 (UTC)[reply]

Sampling is missing[edit]

With ideal behaviour of the building blocks, the network presented in the Principle section would not work (infinite frequency). With a little hysteresis, the frequency would be finite but variable. This would not be called a modulation technique (no carrier to be modulated). You need a clocked latch. --Rainald62 (talk) 09:15, 15 July 2019 (UTC)[reply]

the working of delta modulation[edit]

the working of delta modulation 2405:201:5C1B:5006:2DAD:5EAA:C6C5:3148 (talk) 14:48, 1 February 2023 (UTC)[reply]

I take it your referring to adding a section to this wikipedia page about how it works? FusionSub (talk) 10:47, 21 March 2023 (UTC)[reply]

Does Delta Modulation have any advantage over Delta-Sigma Modulation?[edit]

Delta-sigma modulation came after delta modulation and has several advantages over it. But my question is are there any situations where delta-modulation has a genuine engineering advantage over delta-sigma modulation. Delta-sigma modulation#Improvements over delta modulation currently points out several downsides to delta modulation:

Delta modulation only encodes the signal's change (its delta) rather than its amplitude...

Because delta modulation represents differentiation, it is unable to carry the DC component, its dynamic range and SNR are inversely proportional to signal frequency, and it is susceptible to transmission disturbances that result in an accumulative error. Delta-sigma modulation rearranges the position of the integrator and quantizer, so that the output carries information corresponding to the amplitude of the input signal instead of just its derivative. This also has the benefit of incorporating desirable noise shaping into the conversion process, to deliberately moves quantization noise to frequencies higher than the signal.

Another problem with plain-vanilla (non-adaptive) delta modulation mentioned in this article is slope overload and in granuality.

Can we say that Delta Modulation is basically obsolete now? Em3rgent0rdr (talk) 02:06, 20 August 2023 (UTC)[reply]