pulp::signal::OfflineStretchOptions Struct Reference

Whole-input render options. More...

#include <offline_stretch.hpp>

Public Attributes
StretchCharacter	character = StretchCharacter::clean
	Character mode (see StretchCharacter).
bool	relocate_transients = false
	Graft verbatim transients onto the stretched output for punch (restores the attack peak the phase vocoder smears).
double	time_ratio = 1.0
	output duration / input duration
double	pitch_semitones = 0.0
	fractional allowed
OfflineFormantMode	formant_mode = OfflineFormantMode::preserve_original
double	formant_semitones = 0.0
	used only when formant_mode==shift_independently
bool	repitch_linked = false
	true => pure resample (vinyl); pitch follows time_ratio, spectral path skipped
bool	route_noise_stn = false
	route noise/residual through NoiseMorpher
StretchTransientMode	transient_mode = StretchTransientMode::phase_reset
int	quality = 2
	<=0 draft preview; >=1 full spectral render
double	max_time_ratio = 4.0
	supported stretch span is [1/max, max]
double	max_pitch_semitones = 24.0
int	fft_size = 0
	0 = default (4096); else power-of-two ≥ 256
int	analysis_hop = 0
	0 = default (512); must divide fft_size
float	transient_sensitivity = 0.0f

Detailed Description

Whole-input render options.

Member Data Documentation

analysis_hop

int pulp::signal::OfflineStretchOptions::analysis_hop = 0

0 = default (512); must divide fft_size

character

StretchCharacter pulp::signal::OfflineStretchOptions::character = StretchCharacter::clean

Character mode (see StretchCharacter).

Default clean. varispeed ignores pitch_semitones (pitch is linked to time_ratio); the others honor it.

fft_size

int pulp::signal::OfflineStretchOptions::fft_size = 0

0 = default (4096); else power-of-two ≥ 256

formant_mode

OfflineFormantMode pulp::signal::OfflineStretchOptions::formant_mode = OfflineFormantMode::preserve_original

formant_semitones

double pulp::signal::OfflineStretchOptions::formant_semitones = 0.0

used only when formant_mode==shift_independently

max_pitch_semitones

double pulp::signal::OfflineStretchOptions::max_pitch_semitones = 24.0

max_time_ratio

double pulp::signal::OfflineStretchOptions::max_time_ratio = 4.0

supported stretch span is [1/max, max]

pitch_semitones

double pulp::signal::OfflineStretchOptions::pitch_semitones = 0.0

fractional allowed

quality

int pulp::signal::OfflineStretchOptions::quality = 2

<=0 draft preview; >=1 full spectral render

relocate_transients

bool pulp::signal::OfflineStretchOptions::relocate_transients = false

Graft verbatim transients onto the stretched output for punch (restores the attack peak the phase vocoder smears).

Active on the tempo-only spectral path (pitch==0, quality>=1); equivalent to transient_mode==verbatim_relocate.

repitch_linked

bool pulp::signal::OfflineStretchOptions::repitch_linked = false

true => pure resample (vinyl); pitch follows time_ratio, spectral path skipped

route_noise_stn

bool pulp::signal::OfflineStretchOptions::route_noise_stn = false

route noise/residual through NoiseMorpher

time_ratio

double pulp::signal::OfflineStretchOptions::time_ratio = 1.0

output duration / input duration

transient_mode

StretchTransientMode pulp::signal::OfflineStretchOptions::transient_mode = StretchTransientMode::phase_reset

transient_sensitivity

float pulp::signal::OfflineStretchOptions::transient_sensitivity = 0.0f

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The documentation for this struct was generated from the following file:

• /home/runner/work/pulp/pulp/core/signal/include/pulp/signal/offline_stretch.hpp