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 # Sound operators

 Last update: 31.07.2026 

- [append zeros to signal](append_zeros_to_signal.md)
- [apply gain](apply_gain.md)
- [compute fluctuation strength](compute_fluctuation_strength.md)
- [compute istft](compute_istft.md)
- [compute level over time](compute_level_over_time.md)
- [compute loudness ansi s3 4](compute_loudness_ansi_s3_4.md)
- [compute loudness iso532 1](compute_loudness_iso532_1.md)
- [compute loudness iso532 1 frequency input](compute_loudness_iso532_1_frequency_input.md)
- [compute loudness iso532 1 vs time](compute_loudness_iso532_1_vs_time.md)
- [compute loudness iso532 2](compute_loudness_iso532_2.md)
- [compute octave levels from psd](compute_octave_levels_from_psd.md)
- [compute octave levels from psd ansi s1 11 1986](compute_octave_levels_from_psd_ansi_s1_11_1986.md)
- [compute octave levels from signal](compute_octave_levels_from_signal.md)
- [compute one third octave levels from psd](compute_one_third_octave_levels_from_psd.md)
- [compute one third octave levels from psd ansi s1 11 1986](compute_one_third_octave_levels_from_psd_ansi_s1_11_1986.md)
- [compute one third octave levels from signal](compute_one_third_octave_levels_from_signal.md)
- [compute overall level](compute_overall_level.md)
- [compute power spectral density](compute_power_spectral_density.md)
- [compute PR](compute_PR.md)
- [compute prominence ratio for orders over time](compute_prominence_ratio_for_orders_over_time.md)
- [compute roughness](compute_roughness.md)
- [compute sharpness](compute_sharpness.md)
- [compute sharpness din45692](compute_sharpness_din45692.md)
- [compute sharpness frequency input](compute_sharpness_frequency_input.md)
- [compute sharpness over time](compute_sharpness_over_time.md)
- [compute sound power level iso3744](compute_sound_power_level_iso3744.md)
- [compute spectral centroid](compute_spectral_centroid.md)
- [compute stft](compute_stft.md)
- [compute TNR](compute_TNR.md)
- [compute tonality aures](compute_tonality_aures.md)
- [compute tonality din45681](compute_tonality_din45681.md)
- [compute tonality ecma418 2](compute_tonality_ecma418_2.md)
- [compute tonality iso1996 2](compute_tonality_iso1996_2.md)
- [compute tonality iso1996 2 over time](compute_tonality_iso1996_2_over_time.md)
- [compute tonality isots 20065](compute_tonality_isots_20065.md)
- [compute tone to noise ratio for orders over time](compute_tone_to_noise_ratio_for_orders_over_time.md)
- [create field from vector](create_field_from_vector.md)
- [create noise profile from automatic estimation](create_noise_profile_from_automatic_estimation.md)
- [create noise profile from noise samples](create_noise_profile_from_noise_samples.md)
- [create noise profile from white noise power](create_noise_profile_from_white_noise_power.md)
- [filter design minimum phase FIR filter from FRF](filter_design_minimum_phase_FIR_filter_from_FRF.md)
- [filter signal](filter_signal.md)
- [get cropped signal](get_cropped_signal.md)
- [get frequency weighting](get_frequency_weighting.md)
- [isolate orders](isolate_orders.md)
- [load FRF from txt](load_FRF_from_txt.md)
- [load project sound power level iso3744](load_project_sound_power_level_iso3744.md)
- [load sound samples from txt](load_sound_samples_from_txt.md)
- [load wav sas](load_wav_sas.md)
- [resample](resample.md)
- [sound composer generate sound bbn](sound_composer_generate_sound_bbn.md)
- [sound composer generate sound bbn two parameters](sound_composer_generate_sound_bbn_two_parameters.md)
- [sound composer generate sound harmonics](sound_composer_generate_sound_harmonics.md)
- [sound composer generate sound harmonics two parameters](sound_composer_generate_sound_harmonics_two_parameters.md)
- [sound composer generate sound spectrum](sound_composer_generate_sound_spectrum.md)
- [sound composer load project](sound_composer_load_project.md)
- [sound composer load source bbn](sound_composer_load_source_bbn.md)
- [sound composer load source bbn two parameters](sound_composer_load_source_bbn_two_parameters.md)
- [sound composer load source harmonics](sound_composer_load_source_harmonics.md)
- [sound composer load source harmonics two parameters](sound_composer_load_source_harmonics_two_parameters.md)
- [sound composer load source spectrum](sound_composer_load_source_spectrum.md)
- [sound composer save project](sound_composer_save_project.md)
- [sum signals](sum_signals.md)
- [write wav sas](write_wav_sas.md)
- [xtract](xtract.md)
- [xtract denoiser](xtract_denoiser.md)
- [xtract tonal](xtract_tonal.md)
- [xtract transient](xtract_transient.md)