Spatial/OM-SoX_hoaencode.git

			@@ -1,19 +1,39 @@
			;*************************************************************************
			; OM-SoX, (c) 2011-2025 Marlon Schumacher (CIRMMT/McGill, HfM Karlsruhe) *
			; http://sourceforge.net/projects/omsox/ *
			; *
			; Multichannel Audio Manipulation and Functional Batch Processing. *
			; DSP based on SoX - (c) C.Bagwell and Contributors *
			; http://sox.sourceforge.net/ *
			;*************************************************************************
			;
			;This program is free software; you can redistribute it and/or
			;modify it under the terms of the GNU General Public License
			;as published by the Free Software Foundation; either version 2
			;of the License, or (at your option) any later version.
			;
			;See file LICENSE for further informations on licensing terms.
			;
			;This program is distributed in the hope that it will be useful,
			;but WITHOUT ANY WARRANTY; without even the implied warranty of
			;MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
			;GNU General Public License for more details.
			;
			;You should have received a copy of the GNU General Public License
			;along with this program; if not, write to the Free Software
			;Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,10 USA.

			;Authors:
			; A. Nguyen, 2025
			; M. Schumacher, 2025

			; Design limitations:
			; 1) Sounds must have identical sample rate; otherwise, SoX fails silently, literally.

			; Questions:
			; 1) Is there a built-in (flatten lst)-function? Yes, om:flat
			; 2) Implement up to which order? <=> CLI issues to be expected (e.g., maximum command character length)? max character length for CLI should be changeable

			(in-package :om)

			;;; SOX-HOAENCODE ========================

			; Util
			; Utility functions

			(defun flatten (structure)
			(cond
			((null structure)
			@@ -36,7 +56,7 @@
			)
			)

			; ### Ambisonics ###
			; ### Ambisonics Formulas ###

			(defun sox-hoaencode-sn3d-factor (order degree)
			"This is a placeholder for documentation"
			@@ -203,9 +223,6 @@
			(sox-hoaencode-elevation-factor order degree elevation_deg)))
			)

			; (sox-hoaencode-gain-single-component 1 1 45 0)
			; @AN: what is the difference between "order" and "degree"?


			(defun sox-hoaencode-gains-by-order (order azimuth_deg elevation_deg)
			"Returns the gain values for all components at a specific order"
			@@ -221,6 +238,8 @@
			(sox-hoaencode-gains-by-order ord azimuth_deg elevation_deg)))))


			; ####### SoX-HOAENCODE class ##########

			(defclass! sox-hoaencode (sox-input)
			(
			(gains :accessor gains :initarg :gains :initform nil :documentation sox-gain-doc)