Test Tones / Frequency Sweep for free using Audacity

[guppy87]

Hey all,

Just posting this link as I was hunting up how to properly break in my new 15" that's going into my 36" cubed TubaHT


1) Download Audacity from their homepage
http://audacityteam.org/

Taken From
https://www.stormconsultancy.co.uk/blog ... -audacity/

Copy this code into a frequencysweep.ny file and place it in your Audacity plug-ins directory. You’ll need to restart audactity for it to register the new plug-in. Once you’re back in, click on ‘Generate’ on the menu bar and select ‘Frequency Sweep’ from the list of options. You will then be presented with a dialog containing sliders to play with the parameters of your sweep. If any of the limits are too restricitve for you, simply change the values in the plug-in file!

Code: Select all

;nyquist plug-in
;version 1
;type generate
;name "Frequency Sweep..."
;action "Producing frequency sweep..."
;info "by Adam Pope and Paul Schimmel"
 
;control startf "Start Frequency (Hz)" real "" 20 20 20000
;control endf "End Frequency (Hz)" real "" 20000 20 20000
;control duration "Duration (secs)" real "" 30 1 300
;control level "Level (dBFS)" real " " 0 -40 0
;control type "Sweep scale [1=Linear, 2=Exponential]" int "" 2 1 2
 
(if (= type 2)
(scale-db level (fmosc 0 (pwev startf duration endf))) (scale-db level (fmosc 0 (pwlv startf duration endf))) )

a perfect 10-100hz sweep that is 10 seconds long and looped backwards on itself for 20 seconds total can be gotten from here
https://www.dropbox.com/s/benilsysavy57 ... p.wav?dl=1

If I can help anyone else with a tone let me know

[Grant Bunter]

Hey all,

Just posting this link as I was hunting up how to properly break in my new 15" that's going into my 36" cubed TubaHT


1) Download Audacity from their homepage
http://audacityteam.org/

Taken From
https://www.stormconsultancy.co.uk/blog ... -audacity/

Copy this code into a frequencysweep.ny file and place it in your Audacity plug-ins directory. You’ll need to restart audactity for it to register the new plug-in. Once you’re back in, click on ‘Generate’ on the menu bar and select ‘Frequency Sweep’ from the list of options. You will then be presented with a dialog containing sliders to play with the parameters of your sweep. If any of the limits are too restricitve for you, simply change the values in the plug-in file!

Code: Select all

;nyquist plug-in
;version 1
;type generate
;name "Frequency Sweep..."
;action "Producing frequency sweep..."
;info "by Adam Pope and Paul Schimmel"
 
;control startf "Start Frequency (Hz)" real "" 20 20 20000
;control endf "End Frequency (Hz)" real "" 20000 20 20000
;control duration "Duration (secs)" real "" 30 1 300
;control level "Level (dBFS)" real " " 0 -40 0
;control type "Sweep scale [1=Linear, 2=Exponential]" int "" 2 1 2
 
(if (= type 2)
(scale-db level (fmosc 0 (pwev startf duration endf))) (scale-db level (fmosc 0 (pwlv startf duration endf))) )

a perfect 10-100hz sweep that is 10 seconds long and looped backwards on itself for 20 seconds total can be gotten from here
https://www.dropbox.com/s/benilsysavy57 ... p.wav?dl=1

If I can help anyone else with a tone let me know

Hi and welcome to the forum

It's so close it hurts lol.
You don't want a sweep per se, to break in drivers.
You want a sine wave of fixed frequency, the frequency and voltage being determined by the type of driver being broken in.
eg 30Hz for sub driver, at 10 volts.

Do that for 12 hours, and your driver will be broken in.
If doing a pair, wire them in parallel with one out of phase to the other, and you won't hear a thing while it happens.
Don't block vent holes on the back of the driver...

[Bill Fitzmaurice]

You don't want a sweep per se, to break in drivers.

+1.
After testing remove the driver for break-in. Run a 25 to 30 Hz tone through it, at 10 volts A/C, for 12 hours or so.

THT plans, page 8.

[guppy87]

You don't want a sweep per se, to break in drivers.

+1.
After testing remove the driver for break-in. Run a 25 to 30 Hz tone through it, at 10 volts A/C, for 12 hours or so.

THT plans, page 8.

that's where it was - couldn't find it, but i know I had read it

rock on - off to break in my subwoofer

build should be in a few days - I have the majority cut, just need time

[guppy87]

It's so close it almost hertz

fixed that for ya

[Tom Smit]