1. A computer-implemented method of decompressing transducer data for automatic speech recognition, comprising: providing one or more tokens associated with sounds or words associated with acoustic signal data and provided to a decoding transducer of an automatic speech recognition system; decompressing the transducer data, by at least one processor of the automatic speech recognition system, to propagate the one or more tokens comprising: determining a location of a compressed block in an array of compressed blocks of transducer-related data; determining the compression rate of individual compressed entries in the located compressed block; determining a key value to be applied to individual compressed entries of the located compressed block to obtain the uncompressed value of the entry; reading a compressed entry from the compressed block; and decompressing, the compressed entry by applying the key value to the compressed entry; using, by the decoding transducer, the decompressed entry to propagate the one or more tokens through the transducer; and using, by the decoding transducer, the propagated tokens to form an utterance hypothesis.