An apparatus (100) for generating a bandwidth extended signal (135) from a bandwidth limited audio signal (105), the bandwidth limited audio signal (105) comprising a plurality of consecutive bandwidth limited time blocks (511), each bandwidth limited time block having at least one associated spectral band replication parameter comprising a core frequency band and the bandwidth extended signal (135) comprising a plurality of consecutive bandwidth extended time blocks (513), comprises a patch generator (110), a signal manipulator (120) and a combiner (130). The patch generator (110) is configured for generating a patched signal (115) comprising an upper frequency band using a bandwidth limited time block of the bandwidth limited audio signal (105). The patch generator (110) is configured to perform a harmonic patching algorithm (515) to obtain the patched signal (115). The patch generator (110) is configured to perform the harmonic patching algorithm (515) for a current bandwidth extended time block (m') of th
