Audio file processing services

Tuning of vocal performances using professional music industry software:

Transcription of chords, or entire instrumental parts or works: This service is provided on a one-to-one basis by trained musicians. A is also offered which attempts to detect chords in an audio file.

Speech to text services and software

These type of services are much more common. The best recommendation is to search  for a suitable service matched to your requirements for pricing, accuracy and speed of service.

Relatively few computer programs are available that directly convert audio files of speech to text. This is because immediately recognising speech in an arbitrary recording and accurately converting it to text is a difficult and error-prone process. More typically, speech recognition algorithms (like the sort in dictation software) learn the inflections of one speaker's voice over a period of time, so producing increasing accuracy. One free Windows program called is available that claims about 80% first-time accuracy in transcribing a given WAV file of speech to text.