Merge branch '1091-glitches-in-very-low-signals-in-parammc' into 'main'

#define NONBE_FIX_MC_LFE_LPF                            /* Dlb: Adding the LFE LPF filter back for MC content. */

#define NONBE_FIX_1052_SBA_EXT                          /* Dlb: SBA external output support */

#define NONBE_FIX_1087_OOB_SBA_DTX_RS                   /* VA: issue 1087: Extend the length of the buffer for MCT decoding to avoid out-of-bound writing in SBA SID bitrate switching decoding */

#define NONBE_FIX_1091_PMC_LOW_SIGNAL_BURSTS            /* FhG: fix for #1091, fix limit calculation for the regularized inverse of Kx to avoid bursts in very low signals */

#define NONBE_FIX_1074_NOBJ_SIGNAL_OMASA_LBR            /* Nok: issue 1074 fixing number of objects signaling in OMASA low rate */

/* ##################### End NON-BE switches ########################### */

#include "wmc_auto.h"

#include "rom_dec.h"

#ifdef NONBE_FIX_1091_PMC_LOW_SIGNAL_BURSTS

/*-----------------------------------------------------------------------*

 * Local constants

 *-----------------------------------------------------------------------*/

#define SQRT_EPSILON 3.16227755e-08 /* square root of EPSILON */

#endif

/*-------------------------------------------------------------------*

 * ivas_dirac_dec_output_synthesis_cov_open()

     *-----------------------------------------------------------------*/

    maximum( svd_s_buffer, lengthCx, &limit );

#ifdef NONBE_FIX_1091_PMC_LOW_SIGNAL_BURSTS

    limit = (float) max( limit * reg_Sx, SQRT_EPSILON );

#else

    limit = limit * reg_Sx + EPSILON;

#endif

    for ( i = 0; i < lengthCx; ++i )

    {

        svd_s_buffer[i] = ( ( svd_s_buffer[i] > limit ) ? svd_s_buffer[i] : limit );