Audio 
Sound studio and
audio calculations online  acoustics conversion engine,
a tip 
Acoustic
impedance calculate the acoustic impedance for any material, so long
as you know its density (p) and acoustic velocity (V) 
Aktive audio
filter online aktive audio filter calculator 
Active Filter
Calculator  Bandpass with OpAmp Designer 
Active filter
designer filters with opamps 
Amplifier
online calculations transistor circuits calculator 
Bandpass Filter
Calculator 4 Pole Bandpass Active Filter, 6 Pole Bandpass Active Filter 
Cable Calculator 
Conversion of sound units
sound level SPL > sound pressure p and sound intensity I; sound pressure > sound level, sound intensity > sound level 
Conversion:
voltage V to dBu, dBV, and dBm 
Conversion:
voltage V to dBu, dBV, and dBm A utility to convert between standard
units of power measurement and signal strength, This calculator
interconverts between dBm, dBu, dBV, VPEAK and VRMS 
Crossover Network
Design Formulas & Calculator This calculator will design a twoway
firstorder Butterworth crossover network for you 
Crossover enclosure calculators formulas 
dBm to
Watt Conversion Calculator 
dbm voltage impedance calculator
dbm voltage impedance calculator 
Decibel calculation sound intensity in decibels above the standard
threshold of hearing 
Decibels and distance calculator this calculation will give you the amount of attenuation, in decibels, you can expect with a
change in receiver distance, in a free field 
Design and dimensioning of active filters
active lowpass filter design and dimensioning, active highpass filter
design and dimensioning 
FIR filter design applet 
Frequency response
calculation of microphone cables 
Helmholtz
resonance calculator Helmholtz resonance calculator 
Loudness calculator (Stevens Method) to calculate loudness in sones &
phons from octave band measurements 
L Pad Calculator 
Measuring
Sound Pressure Level (SPL) loudness contour 
Microphone
sensitivity conversion International standards have established 1 Pascal
(Pa) as 94 dBSPL. This reference point is now accepted for specifying the
sensitivity of microphones 
Ohm's law of
the acoustics 
Perceptual Audio Demonstration an audio demonstration of decibels. A sound card is required to
play the tones, Perceptual Audio Demonstrations 
Quickie 2kHz reverb time
calculator this quickie reverb time calculator can give you a fast indication of how much trouble you may be in with your current
room design 
RIAA
curve designer audio pre amplifier design, Magnetic Pickup Equalization 
Room mode calculator This JavaScript calculator will determine the
Axial, Tangential and Oblique room modes of regular rectangular shaped rooms
with uniform wall construction 
SallenKey Active Low Pass Filter
Calculator 
SallenKey low pass Butterworth filter calculator
SallenKey low pass Butterworth filter calculator 
Speed
of sound calculator speed of sound calculator, Speed of sound, density
of air, acoustic impedance vs. temperature 
Speed
of sound calculator speed of sound calculator, Speed of Sound in Air 
Speed
of sound calculator speed of sound calculator 
Speed of
sound in humid air Calculation: speed of sound in humid air, Air Density
Calculations 
Speed of
sound in humid air The calculator presented here computes the
zerofrequency speed of sound in humid air according to Cramer , with
saturation vapour pressure taken from Davis, Metrologia, 29, p67, 1992, and
a mole fraction of carbon dioxide of 0.0004 
Tube Audio Amplifier Design 
WaveGen will read a text file and convert into a Morse Code 
Wavelength of sound
calculator 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 
Horizontaal 
Audio: Loudspeaker tools and calculators 
Audio
speaker design calculators Driver Parameters, Sealed Enclosures, Vented
Enclosures, 2 way Crossover, 3 way Crossover 
Interactive speaker designer 
Loudspeaker
filters calculators 
Loudspeaker
calculators loudspeaker calculators, design a first order 3 way APC
crossover, types of crossovers 1st6th order, calculate box volumes and port
sizes, Designing a Parallel Notch Filter, Designing a Series Notch Filter 
Loudspeaker
crossover calculators loudspeaker crossover calculators 
Loudspeaker tools and calculators crossover calculator, 2way crossover multiple way
crossover, calculator Frequency Response, room Helmholtz resonator, room
resonances, ... 
Measuring
loudspeaker parameters Measuring Speaker TS Parameters 
Passive
crossover basics 4 different crossover configurations 
Passive
crossover filters A passive crossover has no active filters as were used
in the electronic crossover. It uses coils and capacitors to cause a rolloff
of the audio level 
Speaker design calculator
online speaker design calculator 
SPL
calculator will compute the predicted maximum sound pressure level (loudness) at the listening position 
Horizontaal 

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20110102

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