1. An apparatus for detecting an at least one word in an at least one audio signal, the apparatus comprising a computing platform executing: a phonetic and text decoding component for generating from the at least one audio signal a combined lattice, the combined lattice comprising an at least one text part and an at least one phoneme part, the phonetic and text decoding component comprising: a quality monitoring component for obtaining a quality assessment of multiple parts of the at least one audio signal; a speech to text engine for detecting an at least one indexed word from an at least one first part of the at least one audio signal, the at least one first part having high quality; a phoneme detection engine for detecting an at least one indexed phoneme from an at least one second part of the at least one audio signal, the at least one second part having lower quality than the at least one first part; and a phoneme and text lattice generator for generating a combined lattice from the at least one indexed word and the at least one indexed phoneme; and a search component for searching for the at least one word within the combined lattice, the search component comprising: a text search component for searching for the at least one word within the at least one text part of the combined lattice and generating an at least one first search result; a grapheme to phoneme converter for extracting an at least one phoneme from the at least one word; a phonetic sequence search component for searching for the at least one phoneme within the at least one phoneme part of the combined lattice and generating an at least one second search result; and a fusion component for fusing the at least one first search result with the at least one second search result to obtain a fused result.
6. The apparatus of claim 1 further comprising a storage device for storing the combined lattice.