Free Online Audio & Music Tools
Calculate musical timing, tuning, digital audio, levels and room-acoustic estimates with online audio and music tools.
Choose the right tool
Choose timing tools for tempo and samples, tuning tools for frequency ratios, and level tools for amplitude or power. Coherent signal addition differs from independent-source addition; acoustic room estimates assume simplified conditions.
Available tools
- Tempo Note Delay Chart Calculator
Online tempo note delay chart calculator. Ideal mathematical audio model with supplied values. Real speakers, rooms, hearing exposure and converter performance are not measured.
- Musical Bars Duration Calculator
Online musical bars duration calculator. Ideal mathematical audio model with supplied values. Real speakers, rooms, hearing exposure and converter performance are not measured.
- Audio Sample Count to Duration
Online audio sample count to duration. Ideal mathematical audio model with supplied values. Real speakers, rooms, hearing exposure and converter performance are not measured.
- Resampled Audio Length Calculator
Online resampled audio length calculator. Ideal mathematical audio model with supplied values. Real speakers, rooms, hearing exposure and converter performance are not measured.
- Uncompressed PCM Audio Storage Calculator
Online uncompressed pcm audio storage calculator. Ideal mathematical audio model with supplied values. Real speakers, rooms, hearing exposure and converter performance are not measured.
- dBFS Peak Amplitude Ratio Calculator
Online dbfs peak amplitude ratio calculator. Ideal mathematical audio model with supplied values. Real speakers, rooms, hearing exposure and converter performance are not measured.
- Audio Voltage Gain Ratio from Decibels
Online audio voltage gain ratio from decibels. Ideal mathematical audio model with supplied values. Real speakers, rooms, hearing exposure and converter performance are not measured.
- Audio Power Gain Ratio from Decibels
Online audio power gain ratio from decibels. Ideal mathematical audio model with supplied values. Real speakers, rooms, hearing exposure and converter performance are not measured.
- Musical Cents Frequency Ratio Calculator
Online musical cents frequency ratio calculator. Ideal mathematical audio model with supplied values. Real speakers, rooms, hearing exposure and converter performance are not measured.
- Pitch Shift Frequency Calculator
Online pitch shift frequency calculator. Ideal mathematical audio model with supplied values. Real speakers, rooms, hearing exposure and converter performance are not measured.
- MIDI Note to Equal Tempered Frequency
Online midi note to equal tempered frequency. Ideal mathematical audio model with supplied values. Real speakers, rooms, hearing exposure and converter performance are not measured.
- Frequency to Nearest MIDI Note and Cents
Online frequency to nearest midi note and cents. Ideal mathematical audio model with supplied values. Real speakers, rooms, hearing exposure and converter performance are not measured.
- Instrument Transposition Note Calculator
Online instrument transposition note calculator. Ideal mathematical audio model with supplied values. Real speakers, rooms, hearing exposure and converter performance are not measured.
- Custom Equal Temperament Step Frequency
Online custom equal temperament step frequency. Ideal mathematical audio model with supplied values. Real speakers, rooms, hearing exposure and converter performance are not measured.
- Just Intonation Interval Calculator
Online just intonation interval calculator. Ideal mathematical audio model with supplied values. Real speakers, rooms, hearing exposure and converter performance are not measured.
- Swing Subdivision Timing Calculator
Online swing subdivision timing calculator. Ideal mathematical audio model with supplied values. Real speakers, rooms, hearing exposure and converter performance are not measured.
- Polyrhythm Cycle Alignment Calculator
Online polyrhythm cycle alignment calculator. Ideal mathematical audio model with supplied values. Real speakers, rooms, hearing exposure and converter performance are not measured.
- Tap Tempo from Measured Tap Span
Online tap tempo from measured tap span. Ideal mathematical audio model with supplied values. Real speakers, rooms, hearing exposure and converter performance are not measured.
- Playback Speed Tempo and Pitch Change
Online playback speed tempo and pitch change. Ideal mathematical audio model with supplied values. Real speakers, rooms, hearing exposure and converter performance are not measured.
- Audio Alignment Samples from Delay
Online audio alignment samples from delay. Ideal mathematical audio model with supplied values. Real speakers, rooms, hearing exposure and converter performance are not measured.
- Phase Shift from Audio Delay
Online phase shift from audio delay. Ideal mathematical audio model with supplied values. Real speakers, rooms, hearing exposure and converter performance are not measured.
- Sound Wavelength with Air Temperature
Online sound wavelength with air temperature. Dry-air linear approximation near ordinary temperatures.
- Constant Power Stereo Pan Gains
Online constant power stereo pan gains. Ideal mathematical audio model with supplied values. Real speakers, rooms, hearing exposure and converter performance are not measured.
- Identical Stereo Mono Summing Level
Online identical stereo mono summing level. Identical in-phase signals only; not an uncorrelated loudness model.
- Identical Coherent Source Level Sum
Online identical coherent source level sum. Equal phase at the receiver; independent sources require power addition instead.
- Sound Pressure Level from RMS Pressure
Online sound pressure level from rms pressure. Ideal mathematical audio model with supplied values. Real speakers, rooms, hearing exposure and converter performance are not measured.
- Sabine Reverberation Time Estimate
Online sabine reverberation time estimate. Diffuse-field estimate with supplied total equivalent absorption.
- Eyring Reverberation Time Estimate
Online eyring reverberation time estimate. Uniform diffuse-field absorption; coefficient must be below one and above zero.
- Rectangular Room Modal Frequency
Online rectangular room modal frequency. Ideal rigid boundaries; use at least one nonzero mode index.
- Room Schroeder Transition Estimate
Online room schroeder transition estimate. Ideal mathematical audio model with supplied values. Real speakers, rooms, hearing exposure and converter performance are not measured.
- Two Path Comb Filter Notch Frequencies
Online two path comb filter notch frequencies. Equal positive-polarity coherent paths.
- Speaker Path Delay Alignment Calculator
Online speaker path delay alignment calculator. Ideal mathematical audio model with supplied values. Real speakers, rooms, hearing exposure and converter performance are not measured.
- First Order Speaker High Pass Capacitor
Online first order speaker high pass capacitor. Resistive speaker approximation, not measured acoustic crossover design.
- First Order Speaker Low Pass Inductor
Online first order speaker low pass inductor. Resistive speaker approximation.
- Amplifier RMS Voltage for Load Power
Online amplifier rms voltage for load power. Ideal mathematical audio model with supplied values. Real speakers, rooms, hearing exposure and converter performance are not measured.
- Speaker SPL from Power and Sensitivity
Online speaker spl from power and sensitivity. No power compression or room gain.
- Peak Headroom from RMS and Crest Factor
Online peak headroom from rms and crest factor. Ideal mathematical audio model with supplied values. Real speakers, rooms, hearing exposure and converter performance are not measured.
- Waveform Crest Factor Calculator
Online waveform crest factor calculator. Ideal mathematical audio model with supplied values. Real speakers, rooms, hearing exposure and converter performance are not measured.
- Static Compressor Output Level
Online static compressor output level. Hard-knee static model; attack, release and makeup gain excluded.
- Downward Expander Static Level
Online downward expander static level. Hard-knee downward expansion with no time constants.
- Limiter Gain Reduction Requirement
Online limiter gain reduction requirement. Ideal mathematical audio model with supplied values. Real speakers, rooms, hearing exposure and converter performance are not measured.
- Quantization Noise Step Ratio
Online quantization noise step ratio. Normalized bipolar full-scale range; ideal uniform quantization error, not an audio dither generator.
- Nyquist Margin Calculator
Online nyquist margin calculator. Ideal mathematical audio model with supplied values. Real speakers, rooms, hearing exposure and converter performance are not measured.
- Sampled Tone Alias Frequency Calculator
Online sampled tone alias frequency calculator. Ideal mathematical audio model with supplied values. Real speakers, rooms, hearing exposure and converter performance are not measured.
- FFT Frequency Bin Resolution
Online fft frequency bin resolution. Ideal mathematical audio model with supplied values. Real speakers, rooms, hearing exposure and converter performance are not measured.
- Nearest FFT Bin for Target Frequency
Online nearest fft bin for target frequency. Ideal mathematical audio model with supplied values. Real speakers, rooms, hearing exposure and converter performance are not measured.
- EQ Quality Factor from Band Edges
Online eq quality factor from band edges. Ideal mathematical audio model with supplied values. Real speakers, rooms, hearing exposure and converter performance are not measured.
- Frequency Span in Octaves Calculator
Online frequency span in octaves calculator. Ideal mathematical audio model with supplied values. Real speakers, rooms, hearing exposure and converter performance are not measured.
- Tape Speed Change Pitch and Duration
Online tape speed change pitch and duration. Ideal mathematical audio model with supplied values. Real speakers, rooms, hearing exposure and converter performance are not measured.
- Interleaved PCM Frame Byte Calculator
Online interleaved pcm frame byte calculator. Assumes byte-aligned PCM with no container header.