Decimate Rate (Hz or sec)

Controls: X-Axis Dialog >> Slow >> Hz/Sec
Macros: DecRate, DecUnits

When Decimate is active, this specifies the effective sample rate that will be used for the display. It can be expressed in Hz (default) or in seconds by toggling the units button at the right.

The Decimate Rate in Hz is equivalent to the true sample rate divided by the Decimate Factor (X) just above this control. You can adjust whichever is convenient.

For example, knowing that the waveform display holds up to 1024 samples, if you toggle the units button to sec and enter '1m' or '0.001' here, the display will show up to 1024 msec of waveform. Entering '1' will show up to 1024 seconds, while entering '3600' (one sample per hour) will show up to 1024 hours.

Note that this control works by adjusting the Decimate Factor, which is limited to 2147483648 (2^31). At a true sample rate of 48000 Hz this would limit the effective maximum sample period to 44739.24 seconds, or 12.427 hours. So if you want one sample per day (86400 sec) you will first have to set the true rate to 24000 Hz.

See also Slow (Decimate) Controls, X-Axis Control Dialog