THE NUMBERS, EXPLAINED
How to use this calculator.
Comb frequencies apply when equal-level, same-polarity original and delayed signals are summed. Stereo playback alone does not guarantee those notches. Zero delay produces no delay-induced comb.
Start with your inputs
Enter sample rate (hz), delay samples. Keep amounts in the units shown on each field. The example is a starting point, not a recommended value.
| Input | Example value |
|---|---|
| Sample rate (Hz) | 48000 |
| Delay samples | 48 |
A worked example
With the example inputs above, delay (ms) is 1. Change the inputs to explore your own scenario.
| Result | Example answer |
|---|---|
| Delay (ms) | 1 |
| Comb spacing (Hz) | 1,000 |
| First ideal notch (Hz) | 500 |
How this is calculated
Delay (ms)
1000 × b/a.
Comb spacing (Hz)
For positive delay, a/b. For zero delay, no delay-induced comb.
First ideal notch (Hz)
For positive delay, a/(2b). For zero delay, no delay-induced comb.
Symbols and units
- a
- Sample rate (Hz)
- b
- Delay samples
Use the units shown. A list keeps the order in which you enter its values. The symbol ^ means “raised to the power of”.
Assumptions and limits
Comb frequencies apply when equal-level, same-polarity original and delayed signals are summed. Stereo playback alone does not guarantee those notches. Zero delay produces no delay-induced comb.
Calculations use the values you enter. Blank or invalid inputs show an error instead of silently substituting zero. Results are displayed to useful precision; calculations retain the underlying numeric precision.
Questions about this tool
What does the result tell me?
Delay (ms); Comb spacing (Hz); First ideal notch (Hz). The result applies to the method and inputs described above. Check the units and assumptions before using it in a decision.
Why might another calculator differ?
Differences in units, rounding, timing or model definitions can produce different answers. Compare the input definitions and the method, rather than only the final number. For this tool: Comb frequencies apply when equal-level, same-polarity original and delayed signals are summed. Stereo playback alone does not guarantee those notches. Zero delay produces no delay-induced comb.
Are my inputs stored or sent to AI?
Calculations on this page happen in your browser. The separate AI question finder sends its submitted conversation to OpenAI; these calculator fields are not sent. Favourites and recent tool names are stored locally. A shared link contains the inputs you choose to include.
Further reading
Shure: sound delay and interference ↗
Background reading; this does not imply endorsement or independent review of SumFizz.
Review status
Software example and browser checks are recorded in our quality report. No external expert review is claimed. Created with coding assistance; calculations run as ordinary browser code.
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