ticks2f1

Extracts the rps (= the number of rotations per second) value or track from the tick-signal x.

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Usage 1

ticks2f1(x, sr, o)

x

the tick signal vector

sr

sampling rate of the tick signal in Hz; must be >0

o

the order of the tick signal; must be an integer >0

Description 1

The function counts the periods of the tick signal and computes the rps value according to the sampling rate sr and the order of the tick signal o. The tick signal x must be a periodic signal (sine wave, triangle, rectangle, sawtooth or pulse) with o periods per rotation.

rps = sr / o * np / (ilast-ifirst)

with:

np	=	number of detected periodes
ifirst	=	sample index of the begin of the first periode
ilast	=	sample index of the end of the last periode

Result 1

The number of periods per second rps (scalar)

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Usage 2

ticks2f1(x, sr, o , len, hop)

x, sr, o

see Usage 1

len

the frame length in samples; 2 <= len <= nrow(x)/2

hop

the distance between frames in samples; 0 < hop <= len

Description

The tick signal is parted into frames with a length of len samples and a distance of hop samples. For each frame the rps value is computed as described above.

Result 2

A vector containing the rps values of the frames of the tick signal x.

See also

asp2osp, sig2osp, otrack1

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