{"id":4338,"date":"2019-06-14T01:48:42","date_gmt":"2019-06-13T23:48:42","guid":{"rendered":"https:\/\/demdlx704as001.ad.harman.com\/?p=4338"},"modified":"2024-02-16T13:26:28","modified_gmt":"2024-02-16T12:26:28","slug":"compander","status":"publish","type":"post","link":"https:\/\/audioworx.transfunnel.co\/old\/?p=4338","title":{"rendered":"Compander"},"content":{"rendered":"

ALA\u00a0Compander audio object is the core of complex\u00a0ALA\u00a0object. This object is basically a combination of a compressor and expander module. Its aim is to calculate target gain that has to be applied to the input entertainment\u00a0signals, according to user\u2019s tuning and according to the updated parameters received from\u00a0ALA\u00a0Control audio object.<\/span><\/p>\n

In BYPASS mode the dynamic effect of the ALA is completely bypassed. Here Compander acts as if it is a compressor of ratio 1 and both after gain and extra gain are set to zero. In the case of NO_EXTRA_GAIN mode, the Compressor Ratio and the After Gain are dynamically adjusted based on the parameterization given to the module.<\/span><\/p>\n

ALA Compander audio object is added with resetObjectHistory API which clears the history data. This API can be called from application to clear the history.<\/p>\n

Control Inputs<\/strong><\/p>\n\n\n\n\n\n\n\n
Control Input<\/span><\/strong><\/td>\nMin<\/span><\/strong><\/td>\nMax<\/span><\/strong><\/td>\nDefault<\/span><\/strong><\/td>\nUnit<\/span><\/strong><\/td>\nDescription<\/span><\/strong><\/td>\n<\/tr>\n
Compressor Threshold<\/span><\/strong><\/span><\/td>\n-140<\/span><\/td>\n0<\/span><\/td>\n-30<\/span><\/td>\ndB<\/span><\/td>\nThe threshold level for gain reduction or expansion<\/span><\/td>\n<\/tr>\n
Compressor Ratio<\/span><\/strong><\/span><\/td>\n1.0<\/span><\/td>\n20.0<\/span><\/td>\n1.0<\/span><\/td>\n<\/td>\ncontrols the amount of compression that occurs once the signal rises above the threshold<\/span><\/td>\n<\/tr>\n
Compander After Gain<\/span><\/strong><\/span><\/td>\n-20.0<\/span><\/td>\n20.0<\/span><\/td>\n0.0<\/span><\/td>\ndB<\/span><\/td>\nGain which can be applied to makeup the amount of level (to be recovered) lost during compression<\/span><\/td>\n<\/tr>\n
Compander Extra Gain<\/span><\/strong><\/span><\/td>\n-20.0<\/span><\/td>\n20.0<\/span><\/td>\n0.0<\/span><\/td>\ndB<\/span><\/td>\nparameter to compensate the level of weak sources<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Tuning Parameters<\/strong><\/p>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Parameter<\/strong><\/span><\/td>\nMin<\/strong><\/span><\/td>\nMax<\/strong><\/span><\/td>\nDefault value<\/strong><\/span><\/td>\nDescription<\/strong><\/span><\/td>\n<\/tr>\n
Threshold<\/strong><\/span><\/td>\n-140<\/span><\/td>\n0<\/span><\/td>\n-30.0(dB)<\/span><\/td>\nCompander threshold: the compressor starts compressing the signal \u00a0above this level ((This value is just used for Init reasons and will be overwritten by the next controlSet call and will be controlled by AlaControl or any other object connected to the first pin)<\/span><\/td>\n<\/tr>\n
Ratio<\/strong><\/span><\/td>\n1<\/span><\/td>\n20<\/span><\/td>\n1<\/span><\/td>\nCompression ratio<\/span><\/td>\n<\/tr>\n
Attack<\/strong><\/span><\/td>\n1<\/span><\/td>\n10000<\/span><\/td>\n20.0(ms)<\/span><\/td>\nThe time for compander to reach to full compression factor from zero compression<\/span><\/td>\n<\/tr>\n
Release<\/strong><\/span><\/td>\n1<\/span><\/td>\n10000<\/span><\/td>\n50.0(ms)<\/span><\/td>\nTime to stop compression<\/span><\/td>\n<\/tr>\n
Bypass<\/strong><\/span><\/td>\n0<\/span><\/td>\n1<\/span><\/td>\n0<\/span><\/td>\nBypass the dynamic effect of ALA object<\/span><\/td>\n<\/tr>\n
rms_smoothing<\/strong><\/span><\/td>\n0<\/span><\/td>\n10000<\/span><\/td>\n0.0(ms)<\/span><\/td>\nAverage rms computed from last and previous rms values calculated<\/span><\/td>\n<\/tr>\n
soft_knee<\/strong><\/span><\/td>\n-20<\/span><\/td>\n20<\/span><\/td>\n0.0(dB)<\/span><\/td>\nCompressor knee depth (defines the drastic or smooth transition between no compression and compression in given ratio)<\/span><\/td>\n<\/tr>\n
after_gain<\/strong><\/span><\/td>\n-20<\/span><\/td>\n20<\/span><\/td>\n0.0(dB)<\/span><\/td>\nThe gain after compression<\/span><\/td>\n<\/tr>\n
peak_hold<\/strong><\/span><\/td>\n0<\/span><\/td>\n10000<\/span><\/td>\n0(ms)<\/span><\/td>\nCompressor peak hold time<\/span><\/td>\n<\/tr>\n
Ngate_treshold<\/strong><\/span><\/td>\n-140<\/span><\/td>\n0<\/span><\/td>\n-140.0(dB)<\/span><\/td>\nNoise gate threshold – Signal below this threshold will be attenuated, no boost will be applied<\/span><\/td>\n<\/tr>\n
Ngate_attack<\/strong><\/span><\/td>\n1<\/span><\/td>\n10000<\/span><\/td>\n20.0(ms)<\/span><\/td>\nNoise gate attack time \u2013 time for gate to open<\/span><\/td>\n<\/tr>\n
Ngate_release<\/strong><\/span><\/td>\n1<\/span><\/td>\n10000<\/span><\/td>\n50.0(ms)<\/span><\/td>\nNoise gate release time \u2013 time to get the gate closed<\/span><\/td>\n<\/tr>\n
Ngate_gain_reduction<\/strong><\/span><\/td>\n-50<\/span><\/td>\n50<\/span><\/td>\n0.0(dB)<\/span><\/td>\nNoise gate gain reduction<\/span><\/td>\n<\/tr>\n
Ngate_hyst<\/strong><\/span><\/td>\n-50<\/span><\/td>\n50<\/span><\/td>\n0.0(dB)<\/span><\/td>\nNoise gain hysteresis<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

 <\/p>\n","protected":false},"excerpt":{"rendered":"

ALA\u00a0Compander audio object is the core of complex\u00a0ALA\u00a0object. This object is basically a combination of a compressor and expander module. Its aim is to calculate target gain that has to be applied to the input entertainment\u00a0signals, according to user\u2019s tuning and according to the updated parameters received from\u00a0ALA\u00a0Control audio object. In BYPASS mode the dynamic […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"ocean_post_layout":"","ocean_both_sidebars_style":"","ocean_both_sidebars_content_width":0,"ocean_both_sidebars_sidebars_width":0,"ocean_sidebar":"0","ocean_second_sidebar":"0","ocean_disable_margins":"enable","ocean_add_body_class":"","ocean_shortcode_before_top_bar":"","ocean_shortcode_after_top_bar":"","ocean_shortcode_before_header":"","ocean_shortcode_after_header":"","ocean_has_shortcode":"","ocean_shortcode_after_title":"","ocean_shortcode_before_footer_widgets":"","ocean_shortcode_after_footer_widgets":"","ocean_shortcode_before_footer_bottom":"","ocean_shortcode_after_footer_bottom":"","ocean_display_top_bar":"default","ocean_display_header":"default","ocean_header_style":"","ocean_center_header_left_menu":"0","ocean_custom_header_template":"0","ocean_custom_logo":0,"ocean_custom_retina_logo":0,"ocean_custom_logo_max_width":0,"ocean_custom_logo_tablet_max_width":0,"ocean_custom_logo_mobile_max_width":0,"ocean_custom_logo_max_height":0,"ocean_custom_logo_tablet_max_height":0,"ocean_custom_logo_mobile_max_height":0,"ocean_header_custom_menu":"0","ocean_menu_typo_font_family":"0","ocean_menu_typo_font_subset":"","ocean_menu_typo_font_size":0,"ocean_menu_typo_font_size_tablet":0,"ocean_menu_typo_font_size_mobile":0,"ocean_menu_typo_font_size_unit":"px","ocean_menu_typo_font_weight":"","ocean_menu_typo_font_weight_tablet":"","ocean_menu_typo_font_weight_mobile":"","ocean_menu_typo_transform":"","ocean_menu_typo_transform_tablet":"","ocean_menu_typo_transform_mobile":"","ocean_menu_typo_line_height":0,"ocean_menu_typo_line_height_tablet":0,"ocean_menu_typo_line_height_mobile":0,"ocean_menu_typo_line_height_unit":"","ocean_menu_typo_spacing":0,"ocean_menu_typo_spacing_tablet":0,"ocean_menu_typo_spacing_mobile":0,"ocean_menu_typo_spacing_unit":"","ocean_menu_link_color":"","ocean_menu_link_color_hover":"","ocean_menu_link_color_active":"","ocean_menu_link_background":"","ocean_menu_link_hover_background":"","ocean_menu_link_active_background":"","ocean_menu_social_links_bg":"","ocean_menu_social_hover_links_bg":"","ocean_menu_social_links_color":"","ocean_menu_social_hover_links_color":"","ocean_disable_title":"default","ocean_disable_heading":"default","ocean_post_title":"","ocean_post_subheading":"","ocean_post_title_style":"","ocean_post_title_background_color":"","ocean_post_title_background":0,"ocean_post_title_bg_image_position":"","ocean_post_title_bg_image_attachment":"","ocean_post_title_bg_image_repeat":"","ocean_post_title_bg_image_size":"","ocean_post_title_height":0,"ocean_post_title_bg_overlay":0.5,"ocean_post_title_bg_overlay_color":"","ocean_disable_breadcrumbs":"default","ocean_breadcrumbs_color":"","ocean_breadcrumbs_separator_color":"","ocean_breadcrumbs_links_color":"","ocean_breadcrumbs_links_hover_color":"","ocean_display_footer_widgets":"default","ocean_display_footer_bottom":"default","ocean_custom_footer_template":"0","footnotes":"","ocean_post_oembed":"","ocean_post_self_hosted_media":"","ocean_post_video_embed":"","ocean_link_format":"","ocean_link_format_target":"self","ocean_quote_format":"","ocean_quote_format_link":"post","ocean_gallery_link_images":"off","ocean_gallery_id":[]},"categories":[164,315],"tags":[],"coauthors":[165],"_links":{"self":[{"href":"https:\/\/audioworx.transfunnel.co\/old\/index.php?rest_route=\/wp\/v2\/posts\/4338"}],"collection":[{"href":"https:\/\/audioworx.transfunnel.co\/old\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/audioworx.transfunnel.co\/old\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/audioworx.transfunnel.co\/old\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/audioworx.transfunnel.co\/old\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=4338"}],"version-history":[{"count":31,"href":"https:\/\/audioworx.transfunnel.co\/old\/index.php?rest_route=\/wp\/v2\/posts\/4338\/revisions"}],"predecessor-version":[{"id":27037,"href":"https:\/\/audioworx.transfunnel.co\/old\/index.php?rest_route=\/wp\/v2\/posts\/4338\/revisions\/27037"}],"wp:attachment":[{"href":"https:\/\/audioworx.transfunnel.co\/old\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=4338"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/audioworx.transfunnel.co\/old\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=4338"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/audioworx.transfunnel.co\/old\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=4338"},{"taxonomy":"author","embeddable":true,"href":"https:\/\/audioworx.transfunnel.co\/old\/index.php?rest_route=%2Fwp%2Fv2%2Fcoauthors&post=4338"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}