Sinefit for multitones

Generate and fit a multitone.
Updated 28 Nov 2019

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The main functions:

1. ntonemaker.m: Generate real or complex multitone suited for a least-squares fit.

2. nsinefit.m: Perform the least-squares fit for a multitone.

Practical usage would be fitting a multitone measurement result.

The script nsinefit_demo.m provides some usage examples with added noise/distortion. The demo uses ntone_add_err.m for adding noise/distortion and ntone_wini to add error to the initial frequencies.

More info:
Marko Neitola, "Practical Stimulus Design for a Multi-Tone Fit," 2019 IEEE Nordic Circuits and Systems Conference (NORCAS): NORCHIP and International Symposium of System-on-Chip (SoC), DOI: 10.1109/NORCHIP.2019.8906952, 29-30 Oct. 2019.

Cite As

Marko Neitola (2024). Sinefit for multitones (, MATLAB Central File Exchange. Retrieved .

MATLAB Release Compatibility
Created with R2018b
Compatible with any release
Platform Compatibility
Windows macOS Linux
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Version Published Release Notes

Updates mostly in nsinefit.m:
1. Fitting multiple measurements
- improved the code and added mode help information
2. The number if iterations will be determined by the user.