I understand that nowadays most pianos are tuned to equal temperament, but I also the process is largely aural and by instinct and experience and allowances have to be made for the overtones or partials.
How is 'equal temperament' achieved then while tuning aurally? I understand each key has to be precisely and equally 'out of tune' with each other?
![Confused :?](./images/smilies/icon_confused.gif)
Or perhaps each tuner has his or her own preference and tunes instead to a personal 'well-temperament' which makes all keys playable but some sound different but acceptable (ie werkmeister etc)?
I hope I haven't posted something really offtopic here, but it is of great interest to me. Thanks
Cheers.