Page 1 of 1

85 Hz test tone wanted

Posted: Fri Aug 17, 2007 9:29 am
by arela
Or is it hiding on my keyboard somewhere :-)
I need it to calbrate a monitor/sub setup.

From my calcs - there is A at 110 and at 55Hz so somwhere in between, maybe a E0 or F0?

Posted: Fri Aug 17, 2007 1:34 pm
by at0m
Take a modular patch, insert a ConstFreq and an Osc.

Posted: Fri Aug 17, 2007 3:59 pm
by Smiley
You could create one in soundforge. Menu: Tools\Synthesis\Simple. Then set freq, should do the trick. If you have soundforge that is.

Posted: Fri Aug 17, 2007 4:38 pm
by wayne
Allternatively arela, use ControlRoom - type 85 into the sine test tones box, voila!

This got me playing with ControlRoom this morning - discovered my little room has huge standing wave at 111 hz . Wondered where it was :)

Posted: Sat Aug 18, 2007 5:26 am
by arela
thanks all

I just got the last xlr connectors - :D . Only 3 connectors left to solder, then...
I bought xlr male, should be female - no sub jet :cry:

Re: 85 Hz test tone wanted

Posted: Sat Aug 18, 2007 7:37 am
by Cochise
arela wrote:
From my calcs - there is A at 110 and at 55Hz so somwhere in between, maybe a E0 or F0?
Just in the hope I understood what you're looking for.

I'm not sure MIDI note numbers are correct. If not, do advertise me and i''ll 'update' my sheets. If anyone would add MIDI notes sequential numbers, or tell me which is the correspondence I'll be very thankful.
Millisec values represent single wave cycle durations.

Posted: Sat Aug 18, 2007 7:49 am
by Cochise
Sorry, you should shift the three columns of calculations some row down in the Xls, then copy and past up twice the values of the first row to obtain 55 Hz.
(Similar thing can be done with upper notes).

It should be A0.

Frequency doubles each octave... :D


=Added=

However, even using semitone cent tuning, the closer value is 85,018 Hz (F - 46 cent or E + 54 cent ).

But table and calculation sheet might be otherwise useful

Posted: Sat Aug 18, 2007 1:27 pm
by arela
Thanks Cochise, this is useful.
I generated a 85Hz signal with Audition1.5.

Easy to get confused with this stuff, because a bass generated with Band in the Box is often to low to use without transpose up one octave.

And i always forget witch A is 440 :-)

More good news, after some seriouse investigation, i found i had the right XLR connectors. The manual is fooling me for the second time :-(
Connect the signal cables from your source to the female XLR IN connectors on the ...

That is you need a male XLR on your cable - logic?
Yes, in fact, and after failure :-)

Posted: Sat Aug 18, 2007 2:44 pm
by hubird
arela wrote:And i always forget witch A is 440 :-)
:lol: me too, and the 3 octave plus octave shift possibility for a total of 6 octaves also doesn't help really :-D
Connect the signal cables from your source to the female XLR IN connectors on the ...

That is you need a male XLR on your cable - logic?
yes, of course :lol: