Switchable alto and tenor transposition

Online Saxophone Tuner

Choose E-flat alto or B-flat tenor, then see the written saxophone note beside the concert pitch, frequency, and cents.

Alto E-flat or tenor B-flatLocal microphone analysis
Written and sounding noteWaiting for sound

Start the microphone, then sustain one note

— cents
FlatCenteredSharp

The microphone is off.

Select the saxophone before reading the large note

Alto and tenor do not use the same transposition. The selector changes the written-note conversion while leaving the measured concert frequency untouched, so switching instruments never rewrites what the microphone heard.

Check a center note before the register edges

Warm the mouthpiece and instrument, then begin in a stable middle register. Compare lower and upper notes afterward; moving the mouthpiece changes overall length, while embouchure and voicing can pull particular notes independently.

The second line is an audit trail for transposition

The page always retains the sounding concert note below the written result. That line lets a player rehearse with concert-pitch instruments without mentally guessing which transposition the interface applied.

Questions

These answers distinguish alto and tenor settings.

Which setting is for alto saxophone?

Choose E-flat alto. The page then converts the concert sound to alto written notation.

Which setting is for tenor saxophone?

Choose B-flat tenor. Its octave displacement is included in the written result.

Why does the note move during the attack?

Reed noise and the start of the air column can be unstable. Read the sustained section.

Sources used for the notation choices

The alto E-flat and tenor B-flat instrument families follow manufacturer documentation; all detected frequencies remain the engine’s untransposed concert values.

Live microphone or selected-file audio is processed locally in this browser and is not uploaded.