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Do all voice-to-text algorithms of current technology operate in real-time? I don’t mean with a person sitting at a computer with a microphone, but rather inputing a pre-recorded audio file.
i.e. If you have a 30 minute voice recording, will it always take 30 minutes to be transcribed?
Are there different approaches out there?
There is no reason why speech recognition must take as long as the length of audio to be performed. However, due to the computation required I don’t think that you won’t get a hugely faster than real time algorithm. See this section of the Wikipedia article for more detailed information (it doesn’t seem to give any times, though it does give a decent overview of performance).