BPM → Delay Time
Convert tempo into delay and echo times across every note division. Use these values in delay plugins, reverb pre-delay, or LFO rates.
BPM → Bar Length
Calculate how long one or more bars last at your tempo. Useful for loop length planning, reverb tail design, and arrangement timing.
Tip: use bar length to match reverb decay, set delay feedback tail, or verify a loop region in your DAW.
BPM → LFO Rate
Find the LFO frequency in Hz for each note division at your tempo. Use when a modulator takes Hz instead of note values — filters, tremolo, vibrato, autopanning.
| Division | Rate (Hz) | Period (ms) | |
|---|
BPM → Sample Length
Calculate exact loop duration in seconds and samples for any BPM and bar count.
Formula: seconds = (60 / BPM) × (beats per bar × bars). Samples = seconds × sample rate.
Frequency → Musical Note
Find the nearest note name, MIDI number, and how many cents sharp or flat the input frequency is from that note.
Cents deviation: ±50 cents = half a semitone. Positive = sharp, negative = flat.
Musical Note → Frequency
Look up the precise frequency of any note across any tuning reference.
Frequency → Period
Convert a frequency to its waveform cycle duration. Useful for understanding timing relationships and setting exact delays to one cycle of a frequency.
Frequency → Wavelength
Calculate the physical wavelength of a sound. Essential for speaker placement, acoustic panel positioning, and understanding room resonances.
Quarter wavelength rule: acoustic panels are most effective at ¼ of the target frequency's wavelength from the reflective surface.
Phase Offset Calculator
Calculate the time delay needed to correct a phase offset between two signals. Use for microphone alignment, speaker time-alignment, and fixing comb filtering.
180° = polarity inversion. 90° = quarter-cycle delay. Small offsets between mics cause comb filtering and hollow tone.
Distance → Delay
Calculate the delay introduced by the physical distance between a sound source and a microphone or speaker. Used for time-aligning speaker arrays and multi-mic setups.
Rule of thumb: every 34.3 cm (≈ 1 foot) of distance ≈ 1 ms of delay.
Comb Filter Frequencies
Calculate where cancellation notches appear when a signal is summed with a delayed copy. Helps identify problem frequencies from reflections or misaligned mics.
Each notch is an odd multiple of the first: 1×, 3×, 5×, 7× … treating the first notch frequency as the fundamental.
Sample Rate Converter
Compare sample counts and playback differences when moving audio between sample rates. Identifies pitch-shift risk when no SRC is applied.
| Sample Rate | Samples | Playback at source rate | Pitch drift |
|---|
Why it matters: a 44.1k file in a 48k session plays ~8.8% faster if not converted — roughly one semitone sharp.
Sample Rate → Nyquist Frequency
The Nyquist frequency is the highest frequency a digital system can represent — exactly half the sample rate. Frequencies above it cause aliasing.
Bit Depth → Dynamic Range
Calculate the theoretical dynamic range available at a given bit depth. Each additional bit adds approximately 6 dB of headroom.
Formula: dynamic range = bit depth × 6.02 dB (+ 1.76 dB for sinusoidal signals). The human hearing range is roughly 120 dB.
Latency Calculator
Calculate audio interface roundtrip latency from buffer size and sample rate. Helps find the lowest safe buffer for your system.
All buffer sizes at this sample rate
| Buffer | Latency (one-way) | Roundtrip | Usable for |
|---|
Duration → Samples
Convert a time duration into a sample count at any sample rate. Useful for setting exact loop points, fade lengths, and buffer allocation.
Formula: samples = duration × sample rate. For stereo, double the sample count for total frames.
Room Fundamental Frequency
Calculate the fundamental axial resonant modes for each room dimension. These are the frequencies your room will naturally reinforce or cancel.
| Dimension | Mode 1 | Mode 2 | Mode 3 |
|---|
Formula: f = (speed of sound) / (2 × dimension). Each mode is a harmonic. Modes below ~300 Hz are audible as room resonances (standing waves).
Bitrate → File Size
Estimate how large an audio file will be from its bitrate and duration. Useful for storage planning, upload times, and streaming budgets.
Format comparison at this duration