Apple has unveiled another big update to its Logic Pro X ($200) recording app, with version 10.4 adding new temp detection technology and a range of new effect plug-ins. The new Smart Tempo feature now automatically manages tempo across all of the content in a project so that users can record tracks more naturally without having to use a metronome or click track to stay in sync with other content in the same project. Similarly, recordings of varying tempos can be merged together and synced up in tempo from different sources.
