extend_tsp function

Extend tsp with lf

This window is the smallest that is all around tsphf that is compatible with the low frequency.

extend_tsp(tsphf, lffreq)

Arguments

• tsphf: a numeric of length 3, a tsp of high-frequency
• lffreq: a numeric of length 1, the low frequency

Returns

a numeric of length 3, a tsp of high-frequency.