Where appropriate set guidelines for the participants before starting to record. Request that speakers refrain from speaking over each other, and remember that all sounds around a device will be caught on the recording and may obscure speech - cups and saucers, papers rustling, fingers drumming, feet tapping on table legs can all cause interference.
Mobile phones should be removed from the vicinity of the recorder; even if they do not ring electronic interference WILL be picked up on the recording and obscure speech.
Many speakers’ voices tail off towards the end of a sentence and can become inaudible. Remind speakers to speak clearly and audibly at all times.
If available use a good quality stereo microphone. Position the microphone at a central point between participants.
Where there are multiple speakers and if time allows ask each participant to introduce themselves with a sentence or two; this will allow the subscriber to familiarise themselves with each speaker’s voice.