Afinador de cavaquinho free online

Four strings. The harmonic heart of samba and pagode, where the instrument marks the offbeat. Afine pelo microfone, sem instalar nada — a página faz a leitura no seu próprio aparelho.

Corda:
aguardando microfone
Frequência — Hz
Desvio — cents
Nota alvo

cavaquinho Tunings

São 2 afinações usadas no Brasil. Escolha a que o repertório pede — trocar de afinação muda o que fica fácil e o que fica impossível na mão.

Brazilian standard (DGBD)

The tuning used in roda de samba in Brazil.

Frequências das cordas do cavaquinho na afinação Brazilian standard (DGBD)
Corda Note Scientific Frequency
Ré4 D4 293.66 Hz
Sol4 G4 392.00 Hz
Si4 B4 493.88 Hz
Ré5 D5 587.33 Hz

Portuguese (DABE)

Inherited from the Portuguese cavaquinho and still used in traditional choro.

Frequências das cordas do cavaquinho na afinação Portuguese (DABE)
Corda Note Scientific Frequency
Ré4 D4 293.66 Hz
Lá4 A4 440.00 Hz
Si4 B4 493.88 Hz
Mi5 E5 659.26 Hz
Cada corda do cavaquinho na afinação Brazilian standard (DGBD), sobre um eixo logarítmico. As linhas tracejadas marcam oitavas: onde duas cordas caem entre as mesmas linhas, elas estão a menos de uma oitava de distância. Temperamento igual, Lá4 = 440 Hz. Figura do Cantivy — livre para reutilizar com link para esta página.
O braço do cavaquinho até a 12ª casa na afinação Brazilian standard (DGBD). As notas naturais estão em destaque — é esse padrão que se decora, não cada casa separadamente. Posições calculadas a partir da afinação, não de uma tabela fixa. Figura do Cantivy — livre para reutilizar com link para esta página.

The cavaquinho uses four strings, a short attack, and plenty of presence on the offbeats of samba, pagode, and choro. In a partido-alto groove or pagode accompaniment, just one string a semitone too high already changes several chord shapes. The result shows up in the fretting hand, the instrument’s brightness, and the blend with guitar, pandeiro, and voice.

Cantivy’s online cavaquinho tuner uses your phone or computer microphone to identify the note being played. The most common tuning for the Brazilian cavaquinho is DGBD, from the lowest string to the highest: D4, G4, B4, and D5. Leave the page open, allow microphone access, and tune one string at a time with the other three silent.

The display helps locate the note, but it depends on the available microphone, the distance from the device, and room noise. For that reason, play a clean note, wait for the attack to fade, and confirm the reading twice. This guide presents a 2-minute procedure, explains why the note fluctuates, and tells you what to do when a string keeps dropping even after several adjustments.

How to tune a cavaquinho through the microphone in 2 minutes

Start in the quietest place possible. Turn off the television, pause videos, move the cavaquinho away from fans, and ask people nearby for 30 seconds of silence. Open the tuner in your browser and allow microphone access. The feature depends on the page being open and on the device’s pickup; keep the screen active while making the adjustment.

Hold the cavaquinho so your left hand can reach the tuning machines without squeezing the neck. Play one open string with your right hand. Use a moderate attack, similar to what you would use in a samba groove at 60 BPM. Do not strike hard. The first instant of the attack can pull the string toward a reading that is sharper than the sustained note.

In standard Brazilian tuning, check the strings in this order, from lowest to highest: D4, G4, B4, and D5. You can start with any string, but repeat all four at the end. Changing the tension of one string can slightly affect the others, especially with a newly installed set or an instrument that has just come out of a car.

Turn the tuning machine in small movements of approximately 1/8 turn. Whenever possible, approach the note from below. If you go past it, loosen the string slightly, play it again, and slowly raise it to the reference. After every adjustment, release your left hand, play the string again, and see whether the reading returns to the same area.

When all four strings are close, make a second pass. Play D4, G4, B4, and D5 without changing the instrument’s position. Then form a simple open chord and listen for whether the notes stop producing a strong beating against one another. Play a short samba groove between 60 and 72 BPM. A chord may sound acceptable when stationary and reveal an out-of-tune string when you alternate muted strokes and offbeat attacks. To mark that pulse, use the online metronome.

A phone microphone and a computer microphone do not respond the same way. The display is a practical reference, not a laboratory measurement. If the reading fluctuates, bring the cavaquinho within 10 to 30 centimeters of the microphone without touching the instrument to the device. Play the strings separately. For a six-string instrument, use the guitar tuner, but keep DGBD as the cavaquinho reference.

Perform this test today: tune all four strings, wait 30 seconds, repeat the sequence, and note which string changed. If only one has gone out again, you already have a clue to investigate the string, tuning machine, or contact points.

Why the cavaquinho goes out of tune, and what you can prevent

The strings remain under tension all the time. The tuning machine also has a small amount of mechanical play, and the wood reacts to changes in temperature and humidity. When moving from an air-conditioned room at 22 °C to a warmer stage, for example, the instrument may need another check during the first 5 to 10 minutes. This reaction alone does not prove that there is a defect.

Your playing technique affects both the reading and stability. A strong attack pulls the string upward at the instant of the note. If you tune while striking with the same force used in a samba circle, the display may indicate a higher pitch than the sustained note. Play with moderate pressure, wait about 1 second, and adjust from the stable part of the vibration.

The left hand can also push the string out of tune. This happens when you press the fret too hard or place your finger too far from the fret wire. In an open chord, play each string separately and check that no finger is touching the neighboring string. Accidental contact changes the diagnosis and can lead you to turn the wrong tuning machine.

Transport creates another set of problems. A closed trunk, a case left in the sun for 20 minutes, or a window with direct sunlight can heat the instrument quickly. Store the cavaquinho in a case that does not put pressure on the tuning machines. When you arrive at rehearsal, wait 5 to 15 minutes before making the final tuning. This interval allows an initial adjustment to the environment.

The nut, saddle, and points where the string passes also deserve attention. When the string catches at one of these locations, you turn the tuning machine, but the tension does not distribute completely. When you play or fret a chord, the string jumps to another position. If the same string rises or falls sharply in two or three consecutive attempts, stop compensating with the tuner and take the instrument to a luthier.

Perform a simple check today. Tune the B string, play it open, press the third fret, and release your finger. If the note does not return consistently or there is a click around the nut, record the behavior. Do not use force to “unstick” the string. The contact point needs to be evaluated.

Cavaquinho tunings and when to switch between them

The most common tuning for the Brazilian cavaquinho is DGBD: D4, G4, B4, and D5, from the lowest string to the highest. It appears throughout much of samba, pagode, choro, and popular accompaniment. The open strings help the instrument occupy a bright range between the voice and guitar. In a pagode groove, this arrangement favors short responses between chords and offbeat attacks.

Other setups are also used in methods, jam circles, and specific arrangements. The terminology varies among schools, regions, and musicians. For that reason, it is not enough to hear “D tuning” or “D-D” and turn all four tuning machines. Confirm each string’s notes in the method book, reference recording, or with the person leading rehearsal. An incomplete change can leave the instrument in a combination that does not match the arrangement.

Changing tuning changes the feel of the hand. Some positions become more open, while others stop producing the expected notes. The open strings begin to suggest different chords, and the same shape can produce a different result. If you take part in a pagode circle, ask which reference the group uses before touching the tuning machines. The cavaquinho needs to work with the entire arrangement, not merely make one isolated chord easier.

For practice, choose one main tuning and keep a chart in the instrument case. Write, for example: “standard: D4, G4, B4, D5.” When trying another setup, record the date, note sequence, and repertoire in which it will be used. The chord generator helps you check a shape after the change, as long as you select the compatible tuning.

Let the repertoire guide you. In a samba accompaniment, DGBD usually offers quick responses between chords and syncopated grooves. In an MPB song with open voicings, another setup may create a different color. In gospel worship music or a country introduction, the choice should respect the key, range, and pattern used by the rest of the band. To plan the sequence and test the key, consult Cantivy’s chord progressions.

Perform a 10-minute test today. Play the same four-chord sequence in DGBD, record 20 seconds, and note which open strings appear. Then compare it with the arrangement you intend to play. If the new tuning neither reduces movement nor improves the sound of the passage, return to standard and do not carry a change without a practical purpose.

Strings, tension, and the difference a new set makes

A new set rarely becomes stable in the first minute. The strings settle at the tuning machines, nut, and saddle. After installing the set, tune all four, play for 3 to 5 minutes, and check again. Repeat this cycle two to four times until the drop decreases. Pulling the string violently to speed up the process can damage the finish, displace the string, or create uneven tension.

String tension changes the instrument’s response. Lighter strings often make bends and short attacks easier, but they may feel loose when you play hard. A higher-tension set feels firmer and may respond better to an aggressive groove, but it demands more from the left hand. The choice depends on the cavaquinho’s scale, setup, the stringing recommended by the manufacturer, and the force you use.

When an old string loses elasticity, it can produce a note close to correct without maintaining stability or brightness. The tuner shows a wandering reading, while your ear hears a dull sound or irregular beating. Rust, deep fret marks, deformed winding, and loss of brightness are concrete signs of wear. A string that remains unstable after 5 small adjustments deserves replacement or inspection.

Avoid mixing strings from different sets without knowing each one’s gauge and tension. Each size exerts a different force on the neck and bridge. Replacing only one string solves an emergency, but it can leave the set with uneven brightness and response. If a new B string sounds much livelier than the other three, the problem may be the difference in age, not the position indicated on the display.

After changing strings, check string height and intonation. An open string may be in tune while the same note fretted at a certain position is sharp or flat. Keep turning the tuning machine only if the problem also appears on the open string. If the difference depends on the fret or position, the cause lies in the setup, height, or usable string length.

To organize maintenance, record the replacement date and the repertoire played. If you rehearse four times a week and play about 2 hours per session, compare brightness and stability every 20 to 30 hours of use. This record does not replace an instrument evaluation, but it keeps you from waiting for a string to break in the middle of a performance. To develop your listening, consult the guide on how to tune by ear; the principles also help with the cavaquinho.

When the tuner will not stabilize: noise, pickup, and old strings

When the tuner will not stabilize, eliminate one cause at a time. First, turn off the television, fan, and speaker. Pause videos and move the device away from vibration sources. If other people are playing, move 1 to 2 meters away or ask for 20 seconds of silence. The goal is to make the cavaquinho note stronger than the surrounding sound.

Play one string at a time and keep the other three still. Mute the neighboring strings with your right hand or a piece of light fabric. Do not press the string being measured. Repeated strokes placed too close together send several frequencies to the browser. An isolated note lasting 1 to 2 seconds usually provides a more useful reading than a fast sequence.

Check the device’s position. On some phones, the microphone is on the bottom; on notebooks, it may be along the top edge near the camera or on the side. Speak from a distance of 20 centimeters to find the pickup area. Do not cover it with your hand. If the browser asks for permission again, accept it while the page is open.

An old or damaged string produces irregular harmonics. The display may alternate between the fundamental note and higher components, especially on the thinnest string. Play near the middle of the string, reduce the attack force, and wait for the sound to settle. If only one string remains unstable after three attempts, compare its behavior with a new set before blaming the phone.

Test another device or browser to separate pickup and instrument issues. If the phone recognizes your voice but not the cavaquinho, change the distance to 10, 20, and 30 centimeters and repeat the test. If two devices fail on the same string, investigate tuning-machine play, friction at the nut, or a saddle problem. If only one device fails, check browser permission and the microphone area.

Perform this diagnostic sequence today: 1) silence for 30 seconds; 2) isolated D4 string; 3) test at 20 centimeters; 4) repeat on another device; 5) compare with the other three strings. Record the result of each step. Cantivy’s tools help with practice, but they do not replace a physical evaluation when there is a mechanical failure.

How to keep the tuning between rehearsals

After tuning, play for 3 to 5 minutes before putting the instrument away. The warmth of your hands and the vibration settle the set, especially when the strings are new. Make a second check in the order D4, G4, B4, and D5. If one string always drops, record the string, time, and approximate deviation shown by the display. This record helps distinguish a problem with the set, tuning machine, or transport.

Store the cavaquinho in a suitable case and do not place weight on the neck. Avoid heaters, sunny windows, and closed trunks. During long trips, protect the instrument from impacts and sudden changes. Do not loosen all the strings without specific advice from a luthier. That practice can alter the setup and does not prevent the effects of temperature.

Before each rehearsal, reserve 2 minutes for a quiet check. Play all four open strings, confirm an open chord, and play a short groove. If the repertoire includes country, forró, worship music, or MPB, the same routine keeps you from discovering a bad string during the introduction. In a samba circle, this matters even more because the cavaquinho usually marks the offbeat and every beating is clear.

During the song, listen more than you watch the display. A chord that “beats” may reveal two nearly aligned strings that are not perfectly matched. Stop between passages, play the open strings, and correct in small movements. If you use an electric pickup, compare the acoustic sound with the amplified signal. The cable, preamp, and input can alter the tone, but they should not be confused with acoustic tuning.

Always use the same reference for your main repertoire. Mark the installed string set, selected tuning, and last replacement date in the case. Perform maintenance before a show, not as you are about to walk onstage. If you alternate between cavaquinho and guitar, do not rely only on your memory of the positions. The online cavaquinho tuner handles the immediate check; listening and care sustain the result when rehearsal begins.

To apply the routine today, set three alarms on your phone: one before rehearsal, another 5 minutes after starting, and the third before putting the instrument away. At each alarm, check all four strings and record only the one that changed. After a week, you will have enough data to tell whether the drop happens after transport, warming up, or a stronger groove.

Summary

  • Use DGBD as the Brazilian cavaquinho reference: D4, G4, B4, and D5, from the lowest string to the highest.
  • Leave the page open, allow microphone access, and tune one string at a time.
  • Play each string for 1 to 2 seconds with a moderate attack and the other three muted.
  • If the reading fluctuates, reduce noise, test distances from 10 to 30 centimeters, and try another device.
  • If you go past the note, loosen it slightly and slowly raise it to the reference.
  • After installing a new set, tune, play for 3 to 5 minutes, and repeat the check two to four times.
  • If the same string drops or will not stabilize after three attempts, investigate the tuning machine, nut, saddle, string, and setup.
  • Perform a 2-minute check before every rehearsal, lesson, or performance.
  • Protect the cavaquinho from direct sun, closed trunks, impacts, and sudden temperature changes.
  • Record the problem string, when it dropped, and the environmental conditions to guide maintenance.

Perguntas frequentes

What is the standard tuning for the Brazilian cavaquinho?

Standard Brazilian tuning is DGBD, from the lowest string to the highest: D4, G4, B4, and D5. It is frequently used in samba, pagode, choro, and popular accompaniment. Check all four strings with the tuner before starting, especially after transporting the instrument or changing strings.

Can I use the online cavaquinho tuner on my phone?

Yes. Open the page in your browser, allow microphone access, and keep the phone about 10 to 30 centimeters from the cavaquinho. Play one string at a time, without television, conversation, or music in the background. The reading depends on the microphone, distance, and room acoustics. If the device does not recognize the note, change its position, find the microphone area, and play with a lighter attack.

Why does the note move up and down on the tuner?

Fluctuation can come from noise, vibrating neighboring strings, a strong attack, an old string, play in the tuning machine, or friction at the nut. Mute the other three strings and play one isolated note for 1 to 2 seconds. Wait for the attack to pass before adjusting. If only one string remains unstable after three attempts, check the string set, tuning machine, nut, and saddle.

Should I tune the cavaquinho from high to low or low to high?

You can start with any string, but approaching the note from below is usually more predictable. If you go past it, loosen the string slightly, play again, and slowly raise it. After adjusting all four strings, repeat the sequence D4, G4, B4, and D5. The tension of the set can change slightly during the process.

Do new strings go out of tune more at first?

Yes. A new set needs to settle at the tuning machines, nut, and saddle. Tune all the strings, play for 3 to 5 minutes, and check again. Repeat this cycle two to four times without pulling the strings excessively. If the tuning continues to drop significantly after these cycles, check the installation and look for mechanical play.

How can I tell whether the problem is the microphone or the cavaquinho?

First test the environment: turn off noise sources, bring the instrument closer, and play one isolated string. Then try another phone or computer. If two devices fail on the same string, investigate the string, tuning machine, nut, and saddle. If only one device has a problem, check browser permission, microphone position, and distance from the instrument.

Do I need to replace all the strings when one breaks?

In an emergency, you can replace only the broken string. However, a set with strings of very different ages tends to have uneven brightness, tension, and stability. If the other three are old, replacing the set usually produces a more uniform response. After changing strings, tune, play for 3 to 5 minutes, and check again.

Does the tuning change when I fret chords?

It can change if you squeeze the string, place your finger far from the fret wire, or put pressure on the instrument’s neck. A fretted note can also have different intonation from the open string. Use only the necessary pressure and place your finger close to the fret. If the difference remains across several positions, the instrument needs a setup evaluation.

Can I use another tuning to play pagode?

You can, as long as the arrangement and chord shapes are prepared for it. DGBD is the most practical reference for much of the Brazilian repertoire. Another setup changes the open notes, positions, and hand response. Before switching, confirm the key and tuning used by the other musicians. Write the four notes in the case so you do not begin rehearsal with an incomplete setup.

How often should I check the cavaquinho’s tuning?

Check it before every rehearsal, lesson, or performance. Check again after playing for 5 minutes, especially with new strings or after transport. In hot, cold, or humid environments, make a third check before playing with the group. During a long session, use breaks between songs to play all four open strings and correct small deviations.