Ma le cose sono cambiate recentemente, con l'usicta della uova norma IEC 60269-16 2020 e con il nuiovo decreto CAM di agosto 2022. In pratica con la nuova norma è sparito lo spettro Female, ed è rimasto solo lo STI Male. Sia Ramsete che Aurora sono stati aggionrtai recentemente (gennaio 2023) per essere compatibili con la nuoba norma IEC.
Per aggiornare Rasmete occrre scaricare i moduli aggionrtai di cui all'ultima verisone beta, e sovrascrivere i moduli vecchi con lo stesso nome.
Qui:
www.angelofarina.it/Public/Ramsete/Beta/Nella Beta 3.13 sono incluse anche due nuove sorgenti calibrate per la voce umana, si trovano in Sources/Human/ chiamate:
Human-CHU.SPK
bedrock-btb65_v10_EQ.SPK
La prima deriva dagli studi di CHU; riportati nella sottocartella Bibliografia
La seconda contiene al direttivitò della "Talkbox" della Bedrock.
Siccome io la possiedo, insieme all'analizzatore AM-100, io di solito uso tale sorgente Talkbox per le simulazioni, cosi' è perfettamente congrua alle misure fatte con essa.
Qui il Readme della nuova versione di Ramsete 3.13:
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*** Ramsete Beta 3.13 with STI support for IEC-60268-16:2020 ***
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This folder contains a number of files related to the recent upgrade of Ramsete View v. 3.13,
with full support for the latest IEC-60268-16:2020 standard for the evaluation of STI
(Speech Transmission Index).
A new Ramsete Source file has been created, named Human-CHU.spk, based on directivity of
real human talkers measured by Chu in 2001 and on my own measurements made in 2003 and described
in my AES 118 paper.
Both documents are provided in PDF format, alongside with the new IEC standard.
A secon Ramsete Source file has been included containing the directivity and power level of the Bedrock
BTB-65 TalkBox. This has been obtained by importing the CLF file made available on the Bedrock web site.
For both sources, the power levels Lw in octave bands have been adjusted so that the spectrum at 1m
on axis of the mouth has the correct spectrum and overal A-weighted SPL value of 60.0 dB(A), as required
by the new IEC standard (v. 2020, a.k.a. v.5).
An Excel file (with macros - not a virus!) contains all the measured directivity data from the CHU article.
The interpolation of the directivity balloons has been done using Excel's Solver module,
obtaining the Ambisonics coefficients at 1st and 2nd order which approximate the measured data.
An Ambix encoder filter matrix is also provided in WAV format, to be used with X-volver, X-MCFX,
MCFX-convolver or Sparta Matrix Convolver.
It is an 1x9 FIR filter matrix, creating a 9-channels output (Ambix 2nd order) from a single mono
input (recorded on axis of the mouth).
A Plogue Bidule example is provided, allowing to render a directional voice with 6DOF
(positioning inside the virtual room and rotation) and using IEM RoomEncoder for rendering.
Finally, 2 test examples are provided in Ramsete RAY format, for checking that the
new SPK file works as expected in free field conditions.
Please contact me if you find any bug.