NAME
Peta::Hearing - the Bark scale, the threshold in quiet, masking
VERSION
version 0.2610180
SYNOPSIS
use Peta::Hearing;
my $z = Peta::Hearing::bark(1000); # 8.5
my $db = Peta::Hearing::quiet(4000); # dB SPL, about -5
my $share = Peta::Hearing::spreading($z1 - $z0); # an energy factorDESCRIPTION
The pieces of psychoacoustics that Peta::MP3::Encode::Psy and Peta::Vorbis::Encode::Psy both build their models from.
bark
bark($hz): the frequency on the Bark scale.
quiet
quiet($hz): the threshold of hearing in quiet, dB SPL (Terhardt), held below 20 Hz and above 16 kHz.
spreading
spreading($dz): the share of a masker's energy that masks $dz Bark away from it (Schroeder's spreading function).
tone_offset
tone_offset($z): how many dB below a tone at $z Bark noise stays unheard. NOISE_OFFSET is the same for noise masking noise.
AUTHOR
PetaMem s.r.o. <info@petamem.com>
COPYRIGHT
Copyright (c) 2026 PetaMem s.r.o.
LICENSE
This package is free software, dual-licensed under the Artistic License 2.0 and the BSD 2-Clause License. See the LICENSE file of the distribution.