I'm looking for something like Google voice typing, but instead of playing through the speaker and recording through the mic, transcribing directly from an audio file.
The file is in wav format, but I can convert it to another format.
Free preferred, but one-off payment sub-£10 considered. Open source is also preferable.
Edit: If you can tell me how to get voice typing to stop muting the speaker, that would also be helpful. See https://android.stackexchange.com/questions/193881/how-do-i-stop-voice-typing-from-muting-pausing-other-playing-media