I am searching for tool that would allowed me to
align sound system.
I would like send sound impulse to one speaker and
get delay time (ms) based on captured signal by
For top speakers impulse could be about 2.5 kHz I
A bit more complicated situation could be for aligning
top speaker and subs probably impulse of crossover
frequency would be necessary.
That mean 60Hz 80Hz or 100Hz depend on system XO.
Any suggestion how to achieve this? GUI CLI whatever
The human ear can hear this quite well, I understand. I have a
Behringer crossover with adjustable delay built in and I think
there's a procedure to do this in the manual.
There are also software for speaker testing and design that I've
seen. The most complete seems to be available from Parts
Express. I've also seen software packages with things like
waterfall displays available for the PC.
thank you for suggestions, but only what I am searching for is to measure delay in ms for impulse from two sources.
Most close what I've found is Fon's Jack_Delay which measure sound card latency for set of tones.
Le Tue, 15 Aug 2017 22:35:41 +0200,
Jaromír Mikeš <[hidden email]> a écrit :
> Also there is one other problem ... when you align top speakers
> (flying) with subs (stacked) I believe 15'' from "tops" having faster
> reaction than 18'' from subs.
Or the cheap filters used to split the different frequency ranges
doesn't respect the phase of the signal. (good filters in that
regard can be very complex and expansive - it is one of the most
complicated issue in electronics) Which give what you describe here:
> And one more problem ... system I am working with having some delays
> on factory presets ... Yep they are documented in charts ...
With different speakers, what make the delay between them is phase of
the signal. That phase is not dependant of the speaker size, but of the
(lack of) de-phasing into the frequency splitter and of the mechanical
alignment of the coil of the speakers (they must be on the same vertical
plan). The difference between a 15'' and a 18'' will be the dynamic.
15'' or less will be good for funky music or jazz rock, when 15'' or
18'' will be good for rockabilly.
In outdoor conditions you can also get issues with
reflections which can give you a lot of issues like larsen, or multiple
sound paths from the speakers to the public.
Le Wed, 16 Aug 2017 19:05:02 +0200,
Jaromír Mikeš <[hidden email]> a écrit :
> 2017-08-16 12:41 GMT+02:00 Dominique Michel
> <[hidden email]>:
> > Le Tue, 15 Aug 2017 22:35:41 +0200,
> > Jaromír Mikeš <[hidden email]> a écrit :
> > In outdoor conditions you can also get issues with
> > reflections which can give you a lot of issues like larsen, or
> > multiple sound paths from the speakers to the public.
> You meant "indoor" here I guess ... open outdoor is usually much
> better for reflections.
It can also append outdoor. Here in Switzerland, it is the Paleo
Festival in July. Some years ago, peavey made the sound system of
the main stage. They was very surprised by how easy it was to put
the whole system in larsen. The problem was not the forest that was in
the front of the stage at the back of the mixing table, but the water
closed at the left of the stage. It was not possible to move that WC,
so a few years later, they moved the whole festival to a new location
and that larsen issue was solved.
On Fri, 18 Aug 2017 11:03:52 +0200, Michael Jarosch wrote:
>Am Freitag, den 18.08.2017, 02:45 +0200 schrieb Dominique Michel:
>> to put the whole system in larsen
>Could't find a translation for "larsen". What does it mean?
"Audio feedback (also known as acoustic feedback, simply as feedback,
or the Larsen effect) [snip] The principles of audio feedback were
first discovered by Danish scientist Søren Absalon Larsen, hence the
name "Larsen Effect"." - https://en.wikipedia.org/wiki/Audio_feedback
Am Freitag, den 18.08.2017, 11:43 +0200 schrieb Ralf Mardorf:
> "Audio feedback (also known as acoustic feedback, simply as feedback,
> or the Larsen effect) [snip] The principles of audio feedback were
> first discovered by Danish scientist Søren Absalon Larsen, hence the
> name "Larsen Effect"." - https://en.wikipedia.org/wiki/Audio_feedback