Search found 473 matches

by UliBru
17 Jul 2022 13:17
Forum: Acourate
Topic: Step Response Double Peak
Replies: 7
Views: 260

Re: Step Response Double Peak

Depending on the window width in macro4 Acourate does not try to correct reflections outside the window (frequency dependent) as such a correction will worsen the result with change of listening position. So it makes sense to search for the reflection point. A good approach is to measure in nearfiel...
by UliBru
17 Jul 2022 13:09
Forum: Acourate
Topic: Dipole Bass Low Shelving EQ
Replies: 11
Views: 398

Re: Dipole Bass Low Shelving EQ

If a measurement shows a weak bass response you can use a lowshelf to digitally boost the low frequencies. It should be clear that the limit is given by the digital number limit = 0 dBFS (full scale). As we do not know how much of this range is already used by the music signal thus the typical solut...
by UliBru
17 Jul 2022 12:46
Forum: Acourate
Topic: Development of open baffle 3-way plus subs
Replies: 46
Views: 12120

Re: Development of open baffle 3-way plus subs

Horacio, after creation of linearphase crossovers you should load them and check for the ringing in pulse response and step response display. You should also add the XOs and check the result. So you will learn that the different ringings will sum up to zero. And that higher filter orders will create...
by UliBru
17 Jul 2022 12:39
Forum: Acourate
Topic: Using LogSweep Convolution for exploring SRC bandpass filter properties
Replies: 2
Views: 131

Re: Using LogSweep Convolution for exploring SRC bandpass filter properties

1. Acourate is not designed to test different SRC options. But you can use Acourate functions to get as much information as possible. And yes, your approach is logical. In addition you may also check for harmonic distortions. But anyway you have to do this by manual steps. 2. the Dirac pulses have t...
by UliBru
17 Jul 2022 12:18
Forum: Acourate
Topic: Step Response Double Peak
Replies: 7
Views: 260

Re: Step Response Double Peak

David,

a pulse timing of 0.7 m means e.g. a backwall 0.35m behind the mic. Thus the sound has to travel distance from mic to backwall and back = 0.7 m.
So please check if there is a more close reflection point, e.g. table, seat, armrest, neckrest. The reflection can also happen on the speaker side.
by UliBru
15 Jul 2022 09:29
Forum: AcourateConvolver
Topic: Acourate Convolver supported drivers
Replies: 8
Views: 516

Re: Acourate Convolver supported drivers

Yes, you can send left and right channel to the same output channel.
by UliBru
13 Jul 2022 19:02
Forum: AcourateConvolver
Topic: Acourate Convolver supported drivers
Replies: 8
Views: 516

Re: Acourate Convolver supported drivers

You have two requirements: 1. Wasapi & Co. 2. Zero or low latency Ok, introducing Wasapi would solve 1. But Dirac uses IIR filters mainly, maybe a quite short FIR filter for the rest. Thus it has a low latency by principle (but less filter quality regarding excessphase correction). Now the excesspha...
by UliBru
13 Jul 2022 18:34
Forum: AcourateConvolver
Topic: Acourate Convolver supported drivers
Replies: 8
Views: 516

Re: Acourate Convolver supported drivers

Hello, Acourate + AcourateConvolver has been designed to use Asio by principle. You can read about Windows Audio e.g. in a never ending debate at Audio Science Review thread titled "Ending the Windows Audio Quality Debate" Ok, this means that you need to either use Asio drivers (or music players cap...
by UliBru
04 Jul 2022 11:01
Forum: Acourate
Topic: Development of open baffle 3-way plus subs
Replies: 46
Views: 12120

Re: Development of open baffle 3-way plus subs

In a first step ypu can directly go with time-alignment. So you reach a first result without too much effort (including possible traps). Then in further steps you are of course free to dive deeper. You will also learn a lot :) IMO this sequence is way better than to start immediately with a complex ...
by UliBru
03 Jul 2022 16:53
Forum: Acourate
Topic: Development of open baffle 3-way plus subs
Replies: 46
Views: 12120

Re: Development of open baffle 3-way plus subs

IMO with open baffles a close-up measurement only makes sense for small corrections of the driver itself. But if e.g. the two midrange drivers are wired together it is necessary to measure in a greater distance. Even 40 cm may be too close. And at (the quite usual) 1m distance you have to keep room ...