Calculating everything with Mms (published on datasheet) without splitting into Mmd and two possible/probably different air loads is quite common though clear simplification causing some errors and limits what can be simulated. VituixCAD plays with this simplification familiar also with some other tools such as WinISD and UniBox. IB simulation gives the same result as closed box with infinite volume.
Especially horns and transmission lines require different approach. In addition, air load is frequency dependent so Mms = Mmd + Mm1 x some constant value is not fact with wide range of radiating areas and compliances.
Anyway, "Acoustics: Sound Fields and Transducers" by Beranek & Mellow says:
Attachments
Generally speaking, the added mass is a slightly different representation of the radiation reactance. We recently discussed this briefly in the ath4 thread. Anyway, VituixCAD is great software, thanx for it !
Increasing Mms alone decreases sensitivity so simulation of other than simplified direct radiators have to be smarter. So much smarter that VituixCAD Enclosure tool might remain as is
^This would be very interesting, possibly inspect the design in an simulated environment with sound samples and all (EASE, catt, Odeon stuff). Although software is very expensive and not perhaps for hobbyists to enjoy.
ps. ABEC VACS has balloon export but seems not working on my version at least (grayed out). Could one export from Vituix, import to VACS, export to balloon?
ps. ABEC VACS has balloon export but seems not working on my version at least (grayed out). Could one export from Vituix, import to VACS, export to balloon?
^This would be very interesting, possibly inspect the design in an simulated environment with sound samples and all (EASE, catt, Odeon stuff). Although software is very expensive and not perhaps for hobbyists to enjoy.
ps. ABEC VACS has balloon export but seems not working on my version at least (grayed out). Could one export from Vituix, import to VACS, export to balloon?
Yes that would be very interesting. I have Odeon 16.08 combined and can import 3D CLF Balloon into the simulation but have to tool to measure the speaker 3D Balloon, but I have a turntable that I can use to measure the speakers automatically using Clio. I was wondering if VituixCAD is able to combine all these measurements as 3D Balloon.
Are the other measurements also not correct? side panels are 18mm only front panel is 36mm
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Joined 2003
What DSP option in the system list in Options window should i use when using the Monacor DSM-48LAN?
Impossible say without measurements of few transfer functions or screenshots from their design software. Following responses are needed:
1) Parametric equalizer 1000 Hz, +12 dB, Q=2.0
2) Parametric equalizer 1000 Hz, +6 dB, Q=2.0
3) 2nd order shelving low pass filter 1000 Hz, +12 dB, Q=1.0
4) 2nd order shelving low pass filter 1000 Hz, +12 dB, Q=0.5
5) Bessel low pass filter 24 dB/oct, 1000 Hz.
What is sampling rate? Probably 96 kHz because promised band is up to 40 kHz.
Note1: More responses are needed if DSP has BW or Slope parameter instead of Q.
Note2: Cannot promise support if Monacor has proprietary biquad calculation (such as Lake or Hypex). Brands using other that RBJ compatible equations will be ignored.
1) Parametric equalizer 1000 Hz, +12 dB, Q=2.0
2) Parametric equalizer 1000 Hz, +6 dB, Q=2.0
3) 2nd order shelving low pass filter 1000 Hz, +12 dB, Q=1.0
4) 2nd order shelving low pass filter 1000 Hz, +12 dB, Q=0.5
5) Bessel low pass filter 24 dB/oct, 1000 Hz.
What is sampling rate? Probably 96 kHz because promised band is up to 40 kHz.
Note1: More responses are needed if DSP has BW or Slope parameter instead of Q.
Note2: Cannot promise support if Monacor has proprietary biquad calculation (such as Lake or Hypex). Brands using other that RBJ compatible equations will be ignored.
Please check the following information:
Request 1 - Parametric equalizer 1000 Hz, +12 dB, Q=2.0
Request 2 - Parametric equalizer 1000 Hz, +6 dB, Q=2.0
Request 3 - 2nd order shelving low pass filter 1000 Hz, +12 dB, Q=1.0
Note: I couldn't found a way to select the Order and the Gain of the low pass filter, the option for Low Pass filter only allow Frequency and Q.
Request 4 - 2nd order shelving low pass filter 1000 Hz, +12 dB, Q=0.5
Note: Same as above
Request 5 - Bessel low pass filter 24 dB/oct, 1000 Hz
Notes:
Please inform me if this enough, if not, please specify whatever information you need, i'll do my best to get it.
Request 1 - Parametric equalizer 1000 Hz, +12 dB, Q=2.0
Request 2 - Parametric equalizer 1000 Hz, +6 dB, Q=2.0
Request 3 - 2nd order shelving low pass filter 1000 Hz, +12 dB, Q=1.0
Note: I couldn't found a way to select the Order and the Gain of the low pass filter, the option for Low Pass filter only allow Frequency and Q.
Request 4 - 2nd order shelving low pass filter 1000 Hz, +12 dB, Q=0.5
Note: Same as above
Request 5 - Bessel low pass filter 24 dB/oct, 1000 Hz
Notes:
- Sampling rate: 96kHz
- The Monacor is built using the AllDSP platform, so it should share the same DSP equations.
Please inform me if this enough, if not, please specify whatever information you need, i'll do my best to get it.
Yes, Low Shelf was needed.
BUT there's severe problem with parametric EQ. Shape is not analog equivalent or RBJ compatible digital or dbx compatible familiar with some graphic equalizers. It's something else which cannot be supported at the moment.
Green trace is Monacor, and magenta is closest available with Q=2. So Monacor is out of the game without document how biquad coefficients are calculated.
BUT there's severe problem with parametric EQ. Shape is not analog equivalent or RBJ compatible digital or dbx compatible familiar with some graphic equalizers. It's something else which cannot be supported at the moment.
Green trace is Monacor, and magenta is closest available with Q=2. So Monacor is out of the game without document how biquad coefficients are calculated.
Member
Joined 2003