Downward sweep instead of Upward

[UKSPAWN]

I remember when tuning by ear, i used to start the sweep at 100hz and go DOWN to 16hz. It seems now i cant do that. I understand for measurment sweeps. but for just playing tone sweeps can you bring back that ability to do that please. for some reason its easier to understand to my ears than an upward sweep.

Or is there some technical reason or just a bug?

Cheers

 

[John Mulcahy]

You can do that with the linear sweep. I'll allow it for the log sweep in the next build.

 

[UKSPAWN]

ah maybe it was Lin i was doing previously. sorry, i didn't check that!

Thanks John

Just on a curiosity note, if you run the backwards will the LOG 'focus more'/ run longer on the HF than the bass?

 

[John Mulcahy]

A log sweep runs at a constant rate per octave, so for example it spends the same time between 20 and 40 Hz as it does between 1000 and 2000 Hz, whichever direction it runs.

 

[UKSPAWN]

oh i thought that was linear - as in the same all the time "straight line"

"Linear scales have consistent measures between different points, whereas logarithmic scales have progressing measurements between points. "

 

[John Mulcahy]

A linear sweep has a constant rate per Hz, so 20 to 40 Hz takes the same time as 1000 to 1020 Hz. With a linear sweep the time to go from 1000 Hz to 2000 Hz would be 50 times longer than the time to go from 20 to 40 Hz.

 

[UKSPAWN]

thanks for the explanation, i understand now.