receiving a digital signal comprising signal values corresponding to discrete sample locations;

generating modulation parameters based on the digital signal using a modulator network, wherein each of a plurality of modulator layers of the modulator network outputs a set of the modulation parameters; and

generating a predicted signal value of the digital signal at an additional location using a synthesizer network, computing, at a first synthesizer layer, a product of a set of modulation parameters output by a modulator layer and a continuous function of a first set of features to produce a second set of features, wherein the second set of features are input to a second synthesizer layer, wherein each of a plurality of synthesizer layers of the synthesizer network operates based on the set of the modulation parameters from a corresponding modulator layer of the modulator network.