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Ambisonics format converter problems

The ambisonics converter standalone problem behaves strangely (at least on Mac).

Git rev: 91d6421f

Run

./ambi_converter scripts/testv/spectral_test_9ch_48kHz.wav main_float_05.wav 0 5

results in this printout:

In 0, Out: 5
Warning: 952094 samples have clipped!

A similar number is printed when using an all-zero input file (where clipping should be impossible).

Input file looks like this:

Screenshot_2025-09-24_at_16.43.08

Output looks like this:

Screenshot_2025-09-24_at_16.43.35

Bonus pic: the fixed-point version (built from 00a8c57db9097a294b57afddce4a5c5591f491a8 in ivas-basop repo) output looks like this:

Screenshot_2025-09-24_at_16.44.46

Edited by Jan Kiene