Acoustic Index

Add catalog products as acoustic measures to a room from calculate_room or list_rooms and recalculate it. Without a quantity, each product gets the calculator's proposal: the area or number of pieces that brings the room closest to its target, using the product's measured variant that suits the room best. Area products replace the surface they cover (ceiling preferred). Returns the room with the reverberation time before and after. Products already in the room add up; use update_room to change or remove quantities. A room saved in the account needs the account.

add_products_to_room

Calculate the reverberation time of a room with the Acoustic Index calculator: per octave band (Sabine), against the target of the standard for its use (DIN 18041, ASR A3.7, BB93, ANSI S12.60 and others) and with the absorption still missing. Use whenever the user describes a room and asks how reverberant or echoey it is, whether it meets a standard, or how much absorption it needs. Needs the use and the size (length, width and height, or the volume); ask if missing. Surfaces and furnishing improve the result; calculator defaults are used otherwise. No account needed: the room is not saved. Its id works for add_products_to_room, update_room and search_products in this chat, and calculator_url opens it in the browser. Call save_room only when the user asks to save or keep it.

calculate_room

Change a room from calculate_room or list_rooms: name, use, country, dimensions, floor, wall or ceiling finish, furnishing, or the quantities of products in it (0 removes a product). Overwrites the given values and recalculates. Only pass what changes. A room saved in the account needs the account.

update_room

Search the Acoustic Index catalog of acoustic products (ceiling and wall absorbers, baffles, rafts, panels, screens) with lab-measured sound absorption. Use whenever the user looks for absorbers or acoustic materials, by type, manufacturer, material, mounting, alpha_w, fire class, build-up depth or EPD, or asks what to put into a room. Pass room_id from calculate_room to get, for each product, the quantity that brings that room to its target. Returns up to 10 products with id, alpha_w, absorber class, fire class and a link. fire_class_min is checked strictly including smoke and droplet sub-classes; fire_class shows a range when the class depends on the version, and fire_class_detail holds the manufacturer's full statement with its conditions, which you should pass on. Only catalog products and measurements are returned; do not add products or values from elsewhere. No account needed.

search_products

List the rooms saved in the user's Acoustic Index account (from the calculator or this chat), newest first, with project, use, volume, reverberation time and whether the target is met. Use to continue work on an earlier room; then get_room. Needs the user's Acoustic Index account.

list_rooms

Target reverberation time of the standard for a room use and country (DIN 18041, ASR A3.7, ÖNORM B 8115, BB93, ANSI S12.60, UNI 11532 and others): the standard, what it requires and, with the room size, the target value and corridor at mid frequencies and per octave band. Use for questions about requirements or norms without calculating a room, e.g. 'What reverberation time does DIN 18041 require for a classroom of 180 m3?'. To check a real room, use calculate_room instead. No account needed.

get_target

Save a room from calculate_room in the user's Acoustic Index account, filed under the project of its building or client like in the calculator. Only call it when the user asks to save or keep the room. Needs the user's Acoustic Index account; ChatGPT asks the user to connect it. Returns the saved room with links to the calculator and the PDF report.

save_room

Share a room with a link that opens the filled reverberation calculator for anyone without an account, ready to send to a client or colleague, who can save a copy but cannot change the original. The link shares the room's project, like sharing a project in the calculator; a room that is not saved yet is saved first. Only call it when the user asks to share or send the room. Needs the user's Acoustic Index account. Calling it again returns the same link.

share_room

Show one room from calculate_room or list_rooms with its reverberation time, the target corridor of its standard and the planned products. A room saved in the account needs the account.

get_room

Measured absorption of 1 to 3 catalog products: every measured variant (mounting or build-up as the lab report names it) with practical absorption per octave band 125 to 4000 Hz, alpha_w and absorber class, plus fire class, EPD, description and the test reports behind the values. Use for questions about a specific product's absorption curve or to compare products. The variant index is what add_products_to_room accepts. Needs the user's Acoustic Index account.

get_product