If you think that digital transcription done by a machine is fast, affordable and dependable, then you need to reconsider your thoughts. Machines can probably transcribe speech that is concise, clear and free from any particular accent.
Computers sometimes perform digital transcription of speech which is exactly opposite of that said in the audio, which results in the wrong interpretation of the speech. It sometimes skips significant or connecting words and can add words that change the entire meaning that is conveyed in the audio.
Sometimes it so happens that the gap in the speech is transcribed with words that are randomly generated by the system. Although these type of commissions are not seen often but machines sometimes commit such mistakes.
Poor punctuation and general formats cannot be avoided with machine transcription. It also happens that crystal clear conversations or speech is not transcribed correctly. It is hard for machines to transcribe audio that is too quick or too slow.
Often device generated transcripts prove to be detrimental to students that try to follow the speech with the help of subtitles with words either omitted and unwanted words added and wrongly punctuated.
Editing a transcript is often time consuming with machine transcription when compared to manual transcription that can be done easily from the scratch. Hence it is advisable to use manual digital transcription services when it comes to important and confidential speech and audio transcriptions.
Manual transcription is always reliable, and 100% accurate as the transcriber will try to transcribe that is heard in the audio and will not add any extra words or do not omit important words from the speech.