# Cycle Indicator Functions

### HT_DCPERIOD - Hilbert Transform - Dominant Cycle Period

NOTE: The `HT_DCPERIOD`

function has an unstable period.

```
real = HT_DCPERIOD(close)
```

Learn more about the Hilbert Transform - Dominant Cycle Period at tadoc.org.

### HT_DCPHASE - Hilbert Transform - Dominant Cycle Phase

NOTE: The `HT_DCPHASE`

function has an unstable period.

```
real = HT_DCPHASE(close)
```

Learn more about the Hilbert Transform - Dominant Cycle Phase at tadoc.org.

### HT_PHASOR - Hilbert Transform - Phasor Components

NOTE: The `HT_PHASOR`

function has an unstable period.

```
inphase, quadrature = HT_PHASOR(close)
```

Learn more about the Hilbert Transform - Phasor Components at tadoc.org.

### HT_SINE - Hilbert Transform - SineWave

NOTE: The `HT_SINE`

function has an unstable period.

```
sine, leadsine = HT_SINE(close)
```

Learn more about the Hilbert Transform - SineWave at tadoc.org.

### HT_TRENDMODE - Hilbert Transform - Trend vs Cycle Mode

NOTE: The `HT_TRENDMODE`

function has an unstable period.

```
integer = HT_TRENDMODE(close)
```

Learn more about the Hilbert Transform - Trend vs Cycle Mode at tadoc.org.