Audio and acoustic tools and calculators

Software

• Simple Feedback Trainer
  Ian Gregory
  SFT (Simple Feedback Trainer) is an application designed to simulate the process of ‘ringing out’ a sound system and train the user to recognise frequencies by ear. It was designed after a discussion about the topic on alt.audio.pro.live-sound.

Calculators

• Decibels and Distance Calculator
  M^C2 System Design Group
  This calculation will give you the amount of attenuation, in decibels, you can expect with a change in receiver distance, in a free field (outdoors).
  • Includes calculators for:
    • Inverse square law
    • Power ratios
    • Voltage ratios
    • T and H-pads
    • Combining decibels
    • Atmospheric absorption
• “Quickie 2kHz Reverb Time Calculator ":http://www.mcsquared.com/rt60aa.htm
  M^C2 System Design Group
  This quickie reverb time calculator can give you a fast indication of how much trouble you may be in with your current room design.
• Speech Intelligibility Calculator
  M^C2 System Design Group
  This page will calculate reverb time, critical distance, and expected %ALCONS (or Percentage Articulation Loss of Consonants) for the room you input here.
• Wavelength of Sound
  M^C2 System Design Group
  This calculator will tell you the wavelength of any airborne audio frequency in inches, feet and metres, based on the speed of sound at sea level, and at 20 degrees Celsius or 72 degrees Farenheit.

Charts

For more conversions you can always use the google calculator built right into their search engine. At any Google search box simply enter your
calculation or conversion:

• 2 inches in feet
• 5+2*2
• 2^20
• sqrt
• half a cup in teaspoons
• 160 pounds * 4000 feet in Calories
• 2 gallons in liters

Have a calculator, tool, or resource that you think should be listed here? Let us know.

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