Package check result: NOTE

Check: examples, Result: NOTE
  Examples with CPU (user + system) or elapsed time > 5s
                user system elapsed
  periodogram 81.022  2.957   8.487
  find_peaks  65.623  2.880   6.662
  Examples with CPU time > 2.5 times elapsed time
                user system elapsed  ratio
  find_peaks  65.623  2.880   6.662 10.283
  periodogram 81.022  2.957   8.487  9.895
  spectrogram  3.223  0.026   1.041  3.121

Check: tests, Result: NOTE
    Running ‘testthat.R’ [612s/75s]
  Running R code in ‘testthat.R’ had CPU time 8.2 times elapsed time

No changes to worse in reverse depends.