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Sound Analyzersoundanalyzerai.com

Online Pitch Tuner & Audio Frequency Detector (SL)

Ref:
HARMONIC SPECTRUM & STROBE TRACE
Standby
Click "Start Tuner" or select any note from the left instrument panel
Active String Assistant:Select an instrument on the left to start tuning
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-- Hz•0¢
← -50¢ FlatPerfect (0¢)+50¢ Sharp →
Tip: Select any instrument on the left side panel to load its strings and hear authentic reference tones.

Harmonic Product Spectrum (HPS) & Autocorrelation

Acoustic instruments (guitars, violins, cellos, pianos) generate rich harmonic overtones that often produce higher peak amplitude than the fundamental frequency (f₀). Simple zero-crossing pitch trackers frequently produce octave jump errors when reading strong upper partials.

The Harmonic Product Spectrum (HPS) algorithm downsamples the linear FFT magnitude spectrum by integer compression ratios (1×, 2×, 3×, 4×) and multiplies them in the spectral domain. Inharmonic overtones cancel out, leaving an unmistakable peak at the true fundamental pitch. Sub-bin parabolic interpolation provides sub-cent accuracy down to 0.1 Hz resolution.

Concert Pitch & Instrument Timbre

Standard modern international concert pitch is calibrated to A4 = 440 Hz per the ISO 16:1975 Standard Tuning Frequency. Scientific and historical tunings frequently use A4 = 432 Hz (Verdi pitch) or A4 = 442 Hz for modern European symphonies.

Each instrument preset incorporates its signature physical acoustic modeling: plucked acoustic guitar strings with harmonic damping, deep punchy electric bass resonance, bowed violin/cello sustain with natural vibrato and wood formants, bright double-string mandolin chime, and banjo membrane twang.

ISO 16 Pitch Standard (A440)YIN Pitch Algorithm (JASA)
AUDIO PITCH & TUNING FAQ

Frequently Asked Questions on Pitch Detection & Musical Tuning

Deep dive into Harmonic Product Spectrum, equal temperament, cents deviation, and string instrument physics.

1Kaj je uglaševalec / detektor višine tona (Pitch Tuner)?
Orodje za analizo zvoka, ki zazna osnovno frekvenco ($f_0$) glasu ali instrumenta in izračuna odstopanje v centih glede na standardno višino tona (A4 = 440 Hz).
2Kako lahko preverim svojo višino tona in intonacijo?
Odprite Sound Analyzer Pitch Tuner, kliknite 'Zaženi uglaševalec v živo', pojte ali igrajte v mikrofon in spremljajte ime note, frekvenco v Hz in odstopanje v centih (0¢ je popolna uglasitev).
3Ali obstaja aplikacija za urjenje absolutnega sluha?
Da. Sound Analyzer uporablja HPS in YIN algoritme za natančno prepoznavanje not in frekvenc z natančnostjo 0,1 Hz.
4Kakšna je frekvenca ženskega glasu?
Običajni govorni glas odrasle ženske je med 165 Hz in 255 Hz (E3 do C4). Pri petju: Sopran (~C4 261 Hz do C6 1046 Hz), Mezzosopran (~A3 220 Hz do A5 880 Hz) in Alt (~F3 174 Hz do F5 698 Hz).
5Za kaj se uporablja uglaševalec?
Za prilagajanje napetosti strun na kitarah, basih, violinah, violončelih in ukulelah, urjenje vokalne intonacije in preverjanje frekvenc.
6Kako delujejo uglaševalci?
Sprejmejo mikrofonski signal, prek DSP izločijo osnovno frekvenco in jo primerjajo z enakomerno umerjeno lestvico ($f = 440 \cdot 2^{(n-69)/12}$).
7Kako lahko izboljšam natančnost petja?
Zadržujte dolge tone ob spremljanju kazalca centov v Sound Analyzerju, vadite intonacijo ob referenčnih sinusnih tonih in snemajte svoj napredek.
8Kaj pomeni beseda 'Tuner'?
Uglaševalec je naprava ali programska oprema, ki meri frekvence tona in ponuja vizualna navodila za uglasitev po standardni referenčni frekvenci.
9Kaj je interaktivno orodje za uglasitev?
Digitalni program s samodejnim kromatičnim prepoznavanjem, profili za instrumente, merilnikom centov in generatorjem referenčnih tonov.
10Katere so vrste uglaševalcev?
1) Kromatični uglaševalci (vseh 12 poltonov); 2) Stroboskopski uglaševalci (točnost 0,1 centa); 3) Polifonični uglaševalci; 4) Priponka piezo uglaševalci; 5) Spletni programski uglaševalci.