Audio calculations in English acoustics calculator convert audio formulas sound dB audio system microphone electro engineering electronics formula sound recording studio useful stuff free audio calculator recording studio acoustic audio engineering site map online education sound calcs energy calculations study sound acoustics noise control vibration (original) (raw)
Sound level SPL, pressure, pascal, and intensity level (SIL) conversion
Speed of sound in air and the significant temperature calculation
Table of sound pressure levels − Sound pressure and intensity
Speed of sound (velocity of sound) in humid air calculation
Microphone sensitivity conversion dB re 1 V/Pa − Transfer factor mV/Pa
Speed of sound, the temperature, and not the air pressure
Voltage (volt) to level dBu and dBV conversion and vice versa
Temperature dependence of acoustic quantities
Sound pressure, particle velocity, impedance, sound intensity calculation
Room modes calculation − Axial, tangential, and oblique modes
Electrical voltage, current, resistance, and power calculation
Standing waves on a string and room modes between parallel walls
Formula Wheel of Acoustics − Most important Formulas
Room modes − Standing waves in air − Bass reflections at walls
Formula Wheel of Electro Engineering − Most important formulas
Room modes and vibrations of strings compared - Standing waves
Frequency ratio (interval) to cents conversion and vice versa
Comb filters − Dips and peaks − Delay time and Interference (ITDG)
Period, cycle duration, periodic time to frequency calculation
Bandwidth in octaves to Q factor (filter) conversion and vice versa
Harmonics and Overtones, calculated from the Fundamental
Q Factor and filter center frequency − Find −3 dB cutoff frequencies
The decibel calculator (dB) − A valuable tool
Filter slope or steepness (dB/oct) is really not bandwidth
Thermal noise calculation − Johnson noise − White noise calculator
Voltage V to dBu, dBV, and dBm − power level dBm calculator
Time constant and cut-off frequency conversion − Equalization (EQ filter)
Reverb time _RT_60 after Sabine calculation − room acoustic parameter
RC filter cutoff frequency and time constant calculation
Reverberation time _RT_60 to Sound decay rate conversion
Adding decibels − Combining up to ten (10) acoustic levels
Absorption coefficients of building materials and finishes
Adding decibels − Combining up to thirty (30) sound levels
Degrees Celsius and Fahrenheit − Temperature comparison
Sones and phons loudness conversion and the problem with dBA
Measurement of input impedance and output impedance
● Interconnection of two audio units − Voltage bridging − _Z_out < _Z_in
ALcons and STI speech − Intelligibility conversion
Levels in decibels and references of sound quantities − Calculation
XLC reactance calculator with frequency
● Total level in decibels − Adding of incoherent sound sources
Voltage divider calculation − Open-circuit and loaded circuit
● Total level in decibels − Adding of coherent electrical signals
Voltage divider calculation − Unloaded (voltage drop)
Geometric mean − Arithmetic mean − Calculation of the center frequency
Pressure units − Calculation and conversion
● Sound and distance − Sound pressure and sound intensity
Frequency domain of musical instruments, voices (vocals), and keyboards
● Damping (decrease) of sound level with distance r (noise propagation)
Magnetic flux in nWb per meter and conversion to flux level in dB
Time difference Δ t and sound path d distance conversion
Relationship of acoustic quantities − Plane progressive sound wave
Frequency to wavelength conversion and vice versa (sound and light)
Bits and bytes conversion − Kibibits and other prefixes
Wavelength of an acoustic wave in air calculation (sound waves)
Resistor color code calculator − Values with 4 or 5 color bands
Bel to decibel conversion and more ... (Level Prefixes Conversion)
Data transfer rate units conversion − Bits per second = bps
● Factor, ratio, gain to a level value conversion (Gain, decibels, dB)
Air damping formulae (High frequencies / Dissipation) calculation
Amplification (gain) and damping (loss) in dB − Computation
Extension angle of the orchestra calculation (microphone position)
Decibels to voltage gain / loss conversion − Amplification / damping
Fletcher-Munson is not Robinson-Dadson − ISO 226:2003
Decibel (dB) calculation − Amplification and damping − Gain and loss
Unit conversion table − Conversion of units
dB chart for voltages and powers − Relative level and absolute level
Nepers to decibels conversion and vice versa
Voltage and power gain calculation
L pad for loudspeaker damping calculation − Voltage divider
Capacitive reactance calculator XC (Condenser Capacity)
Cross-sectional area to diameter for round wires and cables
Amplitude sum in dB (voltage) and power sum calculation
Cable length, cable capacity, and the cutoff frequency calculation
Phase angle, time delay, and frequency calculation
Why does proximity effect occur? − Shure Pro Audio
Normal equal-loudness level contours from 2003 (new)
Direction of phantom sources by calculation of Δ L and Δ t
gif file: ISO 226:2003 − Normal equal-loudness contours (new)
● Compare sound power and sound pressure in a distance
Ohm's law − Magic triangle − Calculator and formulae
Tony Faulkner's parallel AB figure-of-eight microphone pair
Loudspeaker sensitivity to efficiency in percent conversion
Tony Faulkner's Phased Array microphone system − Review
Pitch change by temperature change (variation) - wind instruments
Formula symbols of electrical engineering and electroacoustics
International Level Displays dBu − Digital + analog
Active Audio Filter − Low cut, high cut, and bandpass
Distortion attenuation dB to THD factor in percent conversion
Absorption of sound by the atmosphere calculation
Sound pressure and the inverse distance law 1/r
Direction of the phantom sources by Δ L and Δ t calculation
Sound intensity and the inverse square law 1/_r_²
Phantom image sources − Stereo loudspeaker signals 1
Number relations (ratio) to decibel (dB) level conversion
Phantom image sources − Stereo loudspeaker signals 2
Parallel resistance calculator − Find the parallel resistance
How do Sound Pressure Levels (SPL) add when listening?
Resistor pairs − Reverse engineered calculator
Inches and centimeters in comparison − Metric and inch ruler
Comparative representation of basic acoustic quantities − Formulas
Visualization of microphone systems − SRA calc of Δ L and Δ t
Relationships of acoustic quantities
SRA calculation of Δ L and Δ t for stereo microphone arrays − flash
Tuning keyboard frequencies and notes − English and German
Decrease in level of sound pressure and sound intensity with distance
Chord name finder by note name entry − Chord recognition
Active Audio-Filter calculation (Low cut − High cut − Bandpass)
Weighting filter calculation − Weighted dBA and dBC − Frequency
Terms of audio engineering and acoustics − English and German
● Amplifier, loudspeaker, and ohms − The misunderstood topic
dB dBu dBV − Comparison table for PPM and VU meters
● Loudness/Volume − Sound level definition and the change of factors
Damping of bridging and damping factor calculation in audio
● Sound pressure and Sound power � Effect and Cause
Celsius (°C), Fahrenheit (°F), Kelvin (K), and �Reaumur − Formulas
Radio frequency to wavelength conversion and vice versa
Sound pressure level SPL and permissible exposure time for noise
gif File: Various microphone connectors (plugs) – Sennheiser MD421
Wave graphs calculation − Amplitude, distance and time
Vowel triangle − First two formant frequencies as diagram − htm
Jecklin disc (new) − A stereo microphone array with isolating baffle
gif file: Vowel triangle or vowel diagram − The first two frequencies
Trygg Tryggvason: The Decca Tree − Classical Sound Recording
● The human perception of loudness − Loudness factor gain ratio
Direct field D (Free field) and Reverberant field R (Diffuse field)
Combine levels of one-third octave bands to octave band
David Griesinger − Man behind reverb algorithms
Pressure gradient and phase − M/S signal − omnidirectional pattern
Sengpiel − Mentioned in papers of the AES (Audio Engineering Society)
EBS Stereo Microphone System − Equivalence Stereophony
BPM tempo and delay to time and frequency − Conversion chart
"Live End − Dead End" − Thoughts about the Reflexion Filter
BPM − Beats per minute counter and calculator
"Kaotica Eyeball" − Singing into a bucket
Sound pressure conversion direct to Sound intensity and vice versa
Questions to sound waves and the amplitudes − Right answers
Surprise − Sound does not come from the strings
Adding amplitudes and levels − Coherent and incoherent signals
8 Ohm Output and 150 Ohm Input − What is that?
What is amplitude? Which amplitude exactly?
Two Different Boundary MicrophoneTypes − Crown PZM
● Many Amplitudes − Sound field quantities of a plane wave
Sound Sound Sound − pressure − sound intensity − acoustic impedance
Musical Terms - Music Glossary Terminology Words (English/German)
Recording Angle (SRA) dependend on Axis Angle - X/Y microphone
Decibel (dB) to percentage (%) converter − THD Total Harmonic Distortion
Excel calculatiom of localisation direction – X/Y coinzidence microphone
Length m, cm, inch, feet and yard − Ruler cm to inch conversion
English and American measures to metric conversions
Temperature °F, °C, K, °Rankine and °Reaumur conversion
Weight conversion milligram to kilogram and liter
Formula symbols of electrical engineering and electroacoustics
Volume conversion milliliter to liter and kilogram
Measurement Unit Conversions − Unit conversion calculator
Time conversion millisecond and second
Body length and height (size) calculation foot-inch to cm and vice versa
Length conversion millimeter and meter
Quadratic equation solver Convert angle to tangens
Prefixes conversion Temperature unit conversion
Time addition calculator − Add time together
Length unit conversion Time Unit conversion
Area unit conversion Energy unit conversion
Volume unit conversion Power unit conversion
Unit conversion table − Conversion of units
Weight-Mass unit conversion Density unit conversion
Alphabetical list of conversion factors
Pressure unit conversion Acceleration unit conversion
SI derived units (SI based units)
Force unit conversion Velocity or Speed unit conversion
● Go to German audio technology calculations 1 
● Go to German temperature, length, and weight calculations 2
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prefixes | length | area | volume | weight | pressure | temperature | time |
energy | power | density | velocity | acceleration | force
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Go to German area calculations and shape calculations 3
● List of some CD recordings ● List of some recorded artists