Hello Once again....
I have been able to start my testing with ARTA . However – I have millions of questions on how to use it best and get reliable results. I should also mention that (At the moment) I only use it to measure the sound in my listening room – to optimize my room correction algorithm and acoustical tratments (absorbers, HelmHolz etc)
Since there will be a lot of questions in this post – I will assing each of them with a number for reference!
So – I am trying to get the best possible sound from my HiFi system. This system is currently composed by:
*PC (JRiver music player, Convolver VST plug-in with FIR room correction and XO filter)
*Lynx AES 16e PCI soundcard with 8 channel digital I/O
*Digital Audio Denmark AX 24 – 6 channel DA convert and 2 channel Mic preamp/AD
*3 x Dynamic Precision DP A1S EBW (Norwegians amps, excellent specs and bandwith)
*Overkill Audio Finale loadspeakers (12`sealed enclosere, 10`open baffel, Manger head units)
Acoustical treatment – 2 x Svanå V6 + 2 x V4 HelmHolz resonators
And lots of absorbers that might make its way into the living room!
For measurements I use a EarthworksM30 connected to the Micpreamp of the AX24(which is SOTA)
Some pictures of the set up:
Amps, DAC and Helmholz and diffursors from Svanå
The way I usually listen....
The rest of the room (and a couple more HelmHolz)
OK...so I hope this thread can be a «how to» and sharing experiences» with the ARTA acoustic software.
All my measurements are taken in the sweetspot!
As far as I understand you can retrieve pretty much every analysis from the impulse respons.
And I have been able to record the impulse respons with this set up:
1)Is this the most accurate/best way to record the impulse respons?
I used this to create the two most «interesting» measurements for my set up:
Cumulative Spectral Decay
2)Does my CSD look OK ?
(I had expected decay time difference to be much larger between low frequencies and high frequencies. I had also expected to see standing wawes much clearer!)
Another graph I was very interested in was the reverbation times:
3) Does this look OK (I did naturally expect some of the same behaviour as for the CSD – and I am very suprised that it actually falls below 300 Hz)
4)My forth questions is about drivers.
I am using digital crossovers in my system – so in another program I am using (Audiolense – which creates the FIR filter for my correction) I can use ASIO drivers – and do partial measurement for each output! Typically when doing a frequency sweep the outoput will be:
Output 1 – left channel DC-150Hz
Output 2 – Left Channel 150-700 Hz
Output 3 – Left Channel 700-25000Hz.
And 4,5 and 6 for rght channel...?
Is such a set up possible in ARTA...?
If not – I will have to rout the output thru a digital loop with crossovers – and that causes quite a lot of latency!
Any feedbacks are welcome!
Thanks!
Best regards
OMF
I have been able to start my testing with ARTA . However – I have millions of questions on how to use it best and get reliable results. I should also mention that (At the moment) I only use it to measure the sound in my listening room – to optimize my room correction algorithm and acoustical tratments (absorbers, HelmHolz etc)
Since there will be a lot of questions in this post – I will assing each of them with a number for reference!
So – I am trying to get the best possible sound from my HiFi system. This system is currently composed by:
*PC (JRiver music player, Convolver VST plug-in with FIR room correction and XO filter)
*Lynx AES 16e PCI soundcard with 8 channel digital I/O
*Digital Audio Denmark AX 24 – 6 channel DA convert and 2 channel Mic preamp/AD
*3 x Dynamic Precision DP A1S EBW (Norwegians amps, excellent specs and bandwith)
*Overkill Audio Finale loadspeakers (12`sealed enclosere, 10`open baffel, Manger head units)
Acoustical treatment – 2 x Svanå V6 + 2 x V4 HelmHolz resonators
And lots of absorbers that might make its way into the living room!
For measurements I use a EarthworksM30 connected to the Micpreamp of the AX24(which is SOTA)
Some pictures of the set up:
Amps, DAC and Helmholz and diffursors from Svanå
An externally hosted image should be here but it was not working when we last tested it.
The way I usually listen....
An externally hosted image should be here but it was not working when we last tested it.
The rest of the room (and a couple more HelmHolz)
An externally hosted image should be here but it was not working when we last tested it.
OK...so I hope this thread can be a «how to» and sharing experiences» with the ARTA acoustic software.
All my measurements are taken in the sweetspot!
As far as I understand you can retrieve pretty much every analysis from the impulse respons.
And I have been able to record the impulse respons with this set up:
1)Is this the most accurate/best way to record the impulse respons?
An externally hosted image should be here but it was not working when we last tested it.
I used this to create the two most «interesting» measurements for my set up:
Cumulative Spectral Decay
2)Does my CSD look OK ?
(I had expected decay time difference to be much larger between low frequencies and high frequencies. I had also expected to see standing wawes much clearer!)
An externally hosted image should be here but it was not working when we last tested it.
Another graph I was very interested in was the reverbation times:
3) Does this look OK (I did naturally expect some of the same behaviour as for the CSD – and I am very suprised that it actually falls below 300 Hz)
An externally hosted image should be here but it was not working when we last tested it.
4)My forth questions is about drivers.
I am using digital crossovers in my system – so in another program I am using (Audiolense – which creates the FIR filter for my correction) I can use ASIO drivers – and do partial measurement for each output! Typically when doing a frequency sweep the outoput will be:
Output 1 – left channel DC-150Hz
Output 2 – Left Channel 150-700 Hz
Output 3 – Left Channel 700-25000Hz.
And 4,5 and 6 for rght channel...?
Is such a set up possible in ARTA...?
If not – I will have to rout the output thru a digital loop with crossovers – and that causes quite a lot of latency!
Any feedbacks are welcome!
Thanks!
Best regards
OMF