Hi,
Short answer : the default and recommended method is the “energy-preserving decoder”.
I have gathered more infos in the attached patcher.
I will try to progressively improve the documentation. (but HOA decoder is a complex topic…)
All the best,
T.
----------begin_max5_patcher----------
4573.3oc6bz0baia74jeEXzzGrmyRU7SI01qS80zq85TmdSSmqODeMCDIjDS
nHTIHshZmd+16tK.oHsIEoijrcmVmYhkAAwtX+dWrP+qW+pAykeVnFv9Er2y
d0q9Wu9UuhFBG3Ul+9UCVy+bPLWQSaPfb8ZQR1fqzOKS74LZ7rUQJlZiHHZQ
jPwxVIXIxz073n+IOKRlvjKnA+C+4qYprTAe8H16DB3U3YdiVI4iBjI2IRyD
o+DagLksHOEleJKTjwihUitM4u9f0TsRlGGxVyyBVQqtLQvxUhPZEvAhR.DN
JYIS.eHDdfF12lbgDW8sQJAMuPg4w.5DwiYQq4KErszxOGdbjJSlBS3RMdjB
qrBPF3YIhEQY.b.3hvAw.Zmjn20oLdBApQr+XtJCv0OAa5bXAxjrMoxMhz3c
U1AZ7DeqvJHVJ.1uM+FNM7M7O+VFGVAkbsXkbK61A31MVrjGrCPf3c2N3JZl
F5CrA32IiBMzkDwV.jA.cHCFAP1L.YGUvQiiR.PlmPrUKGynaREJXVDY+C8X
JohfLsXk03wVil3cEyd1zQ3ublNZ7ULqIiGMl8il2MJjDhjy+3PqBDYd974w
BBDlQRxAVYrHSUcvMHoCn7OVPBKlLOqX0FaFUksSCyACvA92u903+c0Qpb7V
m2P7i2geHfmPLIjsTJqBiCZF.W9s1ES0tkoZWL0GJPDBxhIloMGj5XlEyr5M
xh6lC2ACdpi6HafJ6BjWhlOFI191Mydc8Od9aOfXybWjg7QPKDrQEPaip.Ri
OJPM47KPrcknvfQXNXtYNxkLp5WwP6IJ1FoREAXDZnfGhnMYPHHEFWBVJYKR
E+ibvdAJdjsU.qH97rsRZ4TMxs85ja60g5rsyrQVH02x2Go9VNZcsoSZgg6c
BTn6EPOZdt8IgmGGcmXTH3DoXeeGOMguVz7CakLOgDpscmg6W8e3NsESltkq
FOEfD3C8ChD9WLwtKPWmPWP0zCksaiPuNC.mPCVDK4v5V7lKjA4p4nmzz.Yr
LUOSBBv+YMye7T5SSl55XQep7UU76DgefmkkFMOOSr+SJCuvvLP5cbtPtnX3
hwqRcVCbLB2GOFA9CmPTRDFGfF+lLtDMpMIv8ZZVIqsTwbPCSsfrzDrxAXUJ
x4bUSXaDI050LtFKSV9PAr2aY+iCZemUU.QOIRLu3WORY90BkBBX5A14946s
V8yr5oHuyXaRtaBIDZ0hUkRQ9EP7Kpn+odmXUPfpKsaWYtkTpqSqpF1tdP63
Sc8.qV0C1KCe7FVx3ya0tB7r267icPlm45Q6JKZy44RQFY2RvXtNmRKKcC55
TTm8iR9nTenXQwm5eH6NMX6oxpTgxTyW+ozDSciCOj+bOZZ9ZC1iwHhXu4WX
Pd3uw3Aog0+BC4aPiFkJHD1cYooelRL37YzDAlRW2VGLxNtNN6kcZ03f8Y23
PmnySrsg1Bz7agLA1mhsIBye5JJRweCfMaxyTrR4bHYvTf7uQBgOhgcRYwmu
dNX9FReOVlGBY3CIvlVlNd4C0zyhr7At.PpTXXrgnf0ZJsj46.XlVjc6uILB
PYEvluhsMJSm96BYbrbKkv9+HmjAT+haS1m1CrmX2v9ZlM6sruhYwzOyo1yt
v7rK+612lrkRV+sHlTT9ABEzIHey81hWuddjRlDE.Th0.Y.Ho3V81juiBIG3
+DcFyjNaEO6.DHLkse8Wytok7pG2cd0iOrBgiNqGOswTGG5WVn7XipDiaOJ7
9njX8knjzCT7oLK7GpGv3wa46.E.kJeMU0JCOsrrQ6KWEx+UfIcf0WJsd8u8
sUJ1CHnTuhV3zgEod8rhPI10ZQa3M9tDrnYEPsIcHPOTIzUoBo7UKjVEgzFE
yb6TJysCgrwUrx4niGZhWyhXNSeNDw5BAegjTXhXKPiZnpoo4cEVr+nY3OSw
jvzIlM6PN+b7GbtI58Bkdg3.jGFFgTzDdLStIKZcQsiCRi.GSQbXRxjfJUAF
U6gngVICQU9fURfqzTMYJTnMq58VAp.xiX+Urr33LPHxSXvNGj3hi2wVAAaB
9ffItgC5+Rc0aP9UgFtZqPjAlSjYXw83MqhOqSU7YGV9ZxLCGzVacdpt9J9s
Hc48Lnj2CT7Ed89xUf2ENUqug0q0mN9DjcCw8LrRI8vYAxN2NHJY3lUbknnn
93bWEsbUiSFvlgovTOOk5clQa2xQWVcp.QtsT3OG2iuvecCvmx.HNFt3btJJ
3kCKzTG0tXg1mLV3A.34fE1qZkX2UsRlNiJ5iGcLCSoXLrG2le2wmxRkzIje
LUJw6+JqThcWUJgToPzOJgLPheDDBRoOPOr7uLyP+2OUkMw9TT1j1rEQ6O3C
z4tuIUdG3GCMNQYvCwSjJfACyCpd16aAt1hTvyKXEJ6dgXnMLQmirbakiVJk
m.wwfo.qsKU.R3unndTlSsVjtb2v6.HKwCvZDD5S.FVURVJOq1jviJmhTJBw
yJX2cQoY3Ygoj4oAB0H12krGGGpwwrhvo1CZX5.hGKC12V.3t.Mu131nvcJr
QL4wseIoWWWbD7XwIQ5JXXs76Ax6RP6PAbaHZtaGrfiL.PE61AP9j372wVBD
2hvDAB+5F1mXHhfuC.kEZTgNodzO.FYB.x4BErhFhFrch.MJfrVP+tKJaGCT
1AwvDpnLXgNDAqRhfcNExoQ3.jMVi.IUNGOJwGPvjKVLD4W.pFGoxDIXTr.U
PG9bKkwvt6xXX2g+HcrcVjgNGiuBrdZMYi0d1fGq2mNW9mx.H.lJe8lXjxxK
qzTQJCHW1HRC4D.QllU9HPW.zR4zn0jg1vSH9zh7DstjQuthj5dEMrbCu652
vJj2g2WquWQplmRZJgjH7PPhNZYBKluCHQphxzg005B629UVWdaxEukMWfX.
UNjx8DUhMpWYJx2QqUgf2zTJM0WCUQ6RfRFSJwqTwx7XN1yLfJAXtKJMHFd9
0ZsFRCxDUVQeUnDY4azUwCBtBdxv0F4jhYpo7p7nLzccCcOAQ+go.FcEHlC.
diRjGJGFg8rjpLksTwPpAdnbH4fAjOOhcyMZZ9VQLD1n.y6SugMakZ6Zy9bM
USGDpnFLOVIYKACMrkRIRBT4wYJM2PECF5xPxQZw5Y1vr+fbq.O4sH8pLGKd
IPuST5sI852+sLjayqf0WBzLPCbyQ2B4azxmFjcgPDBv4cxqPFY.jj5h7XfP
+2vU91A+brTWXHu.ijImmwMFwJMpPht6KeJRnLYLaFD2yJ50AjATH.Y1LhVi
c8jldxi4faFcH0pcfcKrPcf7PyPIHVpnj2GyB+FjoH9b.rLX+Ow9ALREE6W8
0f0B7oXC0jqxoj0Ayt.f4AAhMDwqXSdm9cPmMBrgy.zzFe4qpWLfJjevZL79
X8+BXW.BAgH6NUlqtjjP+ce+0ZgtqiiS4g517ppfYsN5oLahcF10FCakmri8
oH3Y0qJcUwKxwCRLf.enZNVhslhhtUl9IzLfRhB7jcG.YPDRjHyAuqUMb7K0
XA9TyquPv0kJAQw46XI7Lrq2.FgH0TBDUAszruM4WYjHAO7gFkHlVMiZ4ubp
Q4L14JZauhPKP2xvlJEUw.Y+DM0HQlLDhgCq6Z7tJl3fO.H5EHBRSFou6sVp
eWxLkBB0SU2pZ.dn17khKGwHb2X5NTrfCJmkEPJQWNXMPJ5Pws6ErJOQAM6G
35CSo.Zt9A9GzGlBZPVPKL1nOf7Npo+sQoJJBtRC6ENHdnEUpnVv1CBIHEVn
KvM81UQl1Ort+gK+kr2IPEoB62HzAqQFycJQSvQQRAq4a1fpkRicw6Om6h3r
e3at96gscyI51cnENcDZgwcu9f5FS4P4Z0RaoY8nirnyU+oLvBTt4ubO4l2T
H2bA7z+x0u4xFoycSl6hJ6Mx1w1w0G6XHyI7nOumVNm.qIGeQE5GPeDEEztw
hB5bVYZljlLVrPNUCJ8WfVWt77TKHyAxMcBUOUapIYaqTPVmf91rS38Bmggi
S9Cf.cDooZyafmw5AUdOlHX38BLxlKuBaF7aGTOvQHzSXz28Cu47b9c1il3O
YBRr0kN2e7HWe3e.82us9u14YnB+8EOO5x76b9OgYHBafoCw1fMQwZLRLHQa
HwAzOsDO+W7QABcXwXXa4l6f.UGrUXfBHcq7bfu2gR0be852ojxjNjTlPtv7
8n9p0ZLwGlMqEYDqmCYjNwvWRM.bW0d1pqZOaOyZzDvGmCdwElruSbsrZQwc
xor9y8C5OlhP69eiEgtqd06Zcy3ci92nqZ72X7V7vmr5LacNqy7sCzYDMrnx
UX4M+Dm0UorzyAHPkeFx78ilJ9pypqki35nc5My3Lw2TsOmN848bbn18DKeg
6w6czM9aWycOAVII7A2NnrhzfzPYA+zIyVT7PrelJBXxT5ryzIfRNNbzoMXq
ciz5sU54PvnK76ERuNzG2bc1aSiq4RWukswa2UiGw5I8ZtzCX++592tmoe5.
VqlqCNvCxhEGji0w5oyE34r8zwhX2+Vzywh5uAGqC1hdNCNTine3NtqcH7bb
cT.mB4sZ..eX2WHkoFUOGpAQlpuUHs0ioyNoMYQWPtY8+9pget0eIxq6Kltj
3gZlDBZYcVu8HHF08sGo3FCa6OyzVMGP8z26re8Q5FedhUlak9Zhkq6aum1c
pw5ju+As+Yc9u7dcgNOwz2SR+ea5u8C2+21dOk8+c6nzKj9+NTlCdGFFDGE7
IrbsxMl6IuBnz43g7kDJ2ddNZDar31vOVd3kfwSecG8OzYiX+bjvQOQyyVaZ
tjGk7SsFDA8ztKWFHS54.+CjI87MoNo2JiaIoea69DKQpHF.0csGewrCpmzG
bJXEOIQDWa0tm1Sq2wd8AxhNuO0eZe.MWgbB04Jvlhqhue22C+JDsCDaTwQL
eTWCe2CbM7GNou2Cesr6jSQ.Ps3.og6zl4JV5U4BVhcMR4s8b14wXWEmBlK7
ms8jQSrmXitIZ4ZIZ+nhDv5X8V0AhcOktwOCJcmHugyI5P4WEECtKRr8tHUz
7n3nrc0bHuXgRjU+6giRjHVF7IQXXJeoJHUFGW0vO4QEheAaEnpiqMgt5guf
9A28vGLeIVTgZiPhvUGosKuj1rpm4Zh3Pggz12rTNSZLs6wG3hG04x2rSw4K
q7saBkn99+q1au2lEpFGH2rKEamuQ.yDFoJmmdGRk8decsQnMNdcwAc2EaDX
MGODypDxgX2zkTVxo2uOvbFfdMJw0W.goOwF2AjrqOo0QgajQIYl81TWGppb
NlDi7G4VDuoGQ+NJDD+tC4HQPK6I5pvbdPPmdvqvujCNZdUwhbXoB+CQJl44
R2nGy86YOkfF4HwOrdOcRI76PVxVyhnSOtPxh9yiE476ibzoPkBKX3QJwdeQ
zStPagsiiQqx+LpTg2OqiTTZl9lmdNDkdpLNa68HT3ONH0K4A6SEjr5CjrNE
PxtOPx9T.Im9.ImSAjb6CjbOEPxqOPx6T.I+9.I+SAjlzGHM4T.oo8ARSORH
Y0m3iJBh5Agnx2rwzq9DXPf.4l7QczvSuh9ynD49n6GjJvTSpb1mC3oPj3YP
X34o53i+rutvXzwOlljGY9dqC1du1jqz8BKde5g4gQx2QE66C2TdZUCLMpec
Rw7kKhhiKicuZkLJR+af9olz+GT6awP6YtVVzWfgNVNSr8oOAevyqh8Iy6XU
7RtdtyFaiS002dB1+GvmlZ634TKWAyqYuGV3WWhDDFOa5XW8mfgrn7L1+Z7j
k5DIsqT1BrYb1fe6zXn5iblUN+7L4xTdXjPm1+3Z0r3JijTJdAk1mhpd30.A
Mp3cpJ4UxLdi45QXY8Mx3P12KwDqiNDKoZcAdOUYfBYtSDpbi6e5PvuTo4db
51o9iGM0qxW3kOD8anHFu2TFCFRVFb52g8gReZ2oiel1oEe+Q+kqfWJ72r9p
yDe2Izl2A+RJkHHt2Sm6KTUs2D9uHEbid7Wlf4fZOcAuvgg0olCx+7j9Hr9+
YjmFCxeb97+OY9wquLqa0kSB64SpX7d582vngNDep8xMd5bXpOAhuINWbXar
3sjMIqFuwwBEBPNheYzNyLxEmZD72mJDIOZLjJLqmC9C9IK+oPvXmTjit.x+
dvo2iF2PB0XRx1alskGQGspJY+3QP3c92u9+.pYC5qA
-----------end_max5_patcher-----------