Excel calculation file: Eric Desart - calculate insulation Drywalls

USNorms3.zip: Calculation and Standards Transmission Loss Walls: STC, MTC, OITC, Music standards, dB(A), dB(B), dB(C) + more info; NEW version; The calculation methods itself are explained in-depth in the related Word document: STC_MTC_OITC_RW.doc

download.php?id=296

Excel calculation file: Eric Desart - calculate insulation Drywalls

This is the MS Word document explaining the methods in depth: STC_MTC_OITC_RW.doc

download.php?id=295 eric_desart

Excel calculation files: Calculating Room Modes

- Excel calculation file: LINKWITZ LAB - Room Modes

- Excel calculation file: LINKWITZ LAB - Room Modes

Room Modes: Another approach to evaluate Room Modes as per averaged room spacing based on a BBC approach R.Walker 1996. Theoretical background to be found in othe document.

http://www.linkwitzlab.com/modes1.xls

LINKWITZ LAB - Room acoustics

General info related to speakers, RT60, Critical Distance (Room Radius), Standing waves, Room Modes etc. Not too complex but good. This link includes the theoretical approach to the LINKWITZ LAB room modes Excel file.

http://www.linkwitzlab.com/rooms.htm

WAVES and MODES a room resonance calculator

This is a Microsoft Excel program for the PC that calculates the resonance frequencies for rectangular rooms, and that shows graphically the sound pressure distributions along the major axes of the room.

- Part Three: Getting the bass right

This is Part 3 of "Loudspeakers and Rooms for Multichannel Audio Reproduction" explaining the use of the Excel File

http://www.harman.com/wp/pdf/Loudspeakers&RoomsPt3.pdf

WAVES and MODES a room resonance calculator

This is a Microsoft Excel program for the PC that calculates the resonance frequencies for rectangular rooms, and that shows graphically the sound pressure distributions along the major axes of the room. To use it, type your room dimensions into the WAVES component of the calculator. The dimensions are automatically entered into MODES. Its use is explained in Part 3 of "Loudspeakers and Rooms for Multichannel Audio Reproduction".

http://www.harman.com/wp/pdf/Room%20Mod ... or2002.xls

Excel calculation file: Jeff D. Szymanski - Room Modes

is a spreadsheet from Jeff D. Szymanski that calculates normal room modes for rectangular spaces. Detailed instructions are included on the first sheet. A Bonello distribution curve is included with information on how to interpret the results.

http://www.studiotips.com/tools/MODESv2p.zip

Excel calculation file: Joe Etrick - Room Modes

Contributed by Smaart Pro user Joe Etrick of Professional Electronic Systems. Type: Microsoft Excel Worksheet file. Size: 50kb

http://support.siasoft.com/Downloads/bi ... 0Modes.xls

Excel calculation file: Timber Slat type Helmholz Resonator

- A timber slat type Helmholtz resonator (Walls Ceiling) can be an elegant way to create absorption. However take into account, that narrow ban absorption can also be a disadvantage. Broadbanded absorption is the general rule.

http://www.saecollege.de/reference_mate ... mholtz.xls

Excel calculation file: Timber Slat type Helmholz Resonator

This is the theorie pages including pictures, explaining the related Excel calculation file.

http://www.saecollege.de/reference_mate ... encies.htm

On-Line calculation tools

Several on line calculation tools are available (often in Java script).

- Acoustics Software on-line

The software on the links below is provided without any guarantee whatsoever. A recent browser will be required to run Java or JavaScript programs. The software can also be saved and run offline.

http://www.measure.demon.co.uk/software.html

CALCULATORS ON-LINE CENTER

Currently the Calculators On-Line Center contains over "15,380" Calculators

http://www-sci.lib.uci.edu/HSG/RefCalculators4.html

Engineering Toolbox

Some interesting links to on-line tools, but also explaining acoustic notions and lots more.

http://www.engineeringtoolbox.com/Sound/SoundMain.htm

Steve Ekblad's Free Audio Software Page + On-Line Audio Tools

Includes some speaker related on-line calculators for speakers (port calculation) and a few simple other ones.

http://www.wssh.net/~wattsup/audio/

TROX Technik

This is probably the only gasflow (ventilation) attenuator program on the net. This program allows to calculate the attentuation of splitter and circular attenuators (disadvantage, it's based on standard Trox products, advantage the used absorption material is mineral wool, so the results can be used).)

http://www2.troxtechnik.de/auslegung/sd ... anguage=GB

References to calculate other tuned Helmholtz resonators

This are not calculation files, but files explaining how to calculate other than slatt type Helmholtz resonators.

- Calculating the fundamental for a cubic Helmholtz

File uploaded by Jeff D. Szymanski (via Dan)

IPA Acoustics Handbook: How to use perforated steel sheet

This is a VERY GOOD publication of the Industrial Perforators Association (IPA), related to the use of perforted steel sheets, as wel for broadband absorption as well for tuned resonators.

http://www.iperf.org/ac00.htm

Different Calculation Tools on the StudioTips site itself

Several calculation tools originating from list members collected on the studiotips.com site. As well for MAC as well for PC.

http://www.studiotips.com/tools

Logs, Bels, Decibels, Adding & Subtracting Decibels

Not used to work with decibels? How to add or subtract them. Follow the instructions on this link and it will have no secrets for you anymore.

http://www.steve-o.com/public/unc/decibel/