This tuner is developed for tuning of accordions and similar 'free-reed' instruments such as the diatonic harmonica, the concertina, the bandoneón, the melodica and the reed organ. Dirk's Tuner is developed for professional experienced tuners, but because it gives good insights in the tuning process, it is very suitable for beginning tuners as well.


Languages
The tuner is available in the following languages:
           

The manual is available in the following languages:
(click on a flag to view the manual)
       

Possibilities of this tuner
The unique possibilities of this tuner simplify and accelerate the tuning process considerably. The tuner has a large range from E0 up to C9, a very high accuracy of less than 0.05 Hz (waves of longer than 20 seconds) and can measure to three reeds at the same time. Because of this the tuning of the accordion can be measured without disabling reeds before opening the case. The real frequencies of the reeds which are influenced by each other and by the case can be measured now. This way it is considerably simpler and quicker to select the reed that deviates and needs attention. The tuner measures beatings that arise because the reeds sound together and shows these in Cent or Hertz. Beatings cannot be measured accurately enough by measuring the reeds separately, but by measuring them at the same time it is accurate enough. The measured beatings are compared to the beating list of the accordion concerned which indicates the desired beating for each note. This beating list can be produced rapidly and simply using a graph in the tuner.

The extra module: Record and report
The tuner can be extended with a module that can record and save all notes of the accordion quickly and create a report afterwards. This report gives the error of each reed in an easy to read table. After opening the accordion, the reeds which deviate too much can be corrected on the tuning table using the values from the report. The reeds (that have a deviated frequency outside the case) will get the correct frequency after being put back in the accordion. The report can be printed again afterwards and join the accordion as a tuning report.

Measure chords and octaves
Also chords (three reeds) and octaves (two or three reeds in several octaves) can be measured by the tuner, so the case does not need to be opened for these as well.

System requirements
The Tuner runs optimally on machines starting from the Pentium II, 1 GHz. On less fast machines the tuner also works fine, but will react more slowly. The tuner runs under Windows 2000, XP, Vista and 7 and uses a microphone input.

News articles
• Accordions Worldwide
• Music paper 'Intermusik'
• Dirk's Instrument Tuner explained in the German book 'Das PC Tonstudio'
• Trimester magazine 'KLANK'

Some quotes from users

•	Daniel Strohmeier, Strasser: "I work at Harmonika-Erzeugung Strasser with your tuner. it is a great tuner, that helps me find the wrong reed and correct it quickly."
•	Dag Granéll, Beltrami: "I liked the Accordion Tuner 2.0, sometimes even too accurate, but version 2.2 has become much better with features as Freeze! The extra module is in fact indispensable. It makes everything much easier and clearer. Quickly print a report. I did that with Excel before, and now it’s ready in no time + a list with deviations!"
•	John Spiers, Spiers & Boden: "Now I have been using your accordion tuner for 4 months I can say that it has improved the way I tune my instruments massively. It never ceases to amaze me that my very specialist needs have been catered for."
•	Karl Gruber, Harmonikaservice: "I don't dare to recommend it any further, my competitors would soon be as fast as I am, ha ha ha..."

An overview of this tuner's features
• Tuning of tones with 2 and 3 reeds (at the same time)
• Tuning of chords. (3 reeds at the same time)
• Tuning of basses. (2 or 3 reeds at the same time)
• Tuning with your pc or laptop with external or internal microphone
• Detects and displays note and octave automatically
• Automatic correction of deviations in the accuracy of the sound card
• Zoom to a full screen for a clear overview
• Freeze the screen to easily examine the values and graphs
• Play notes with the sound card
• Automatic or manual selection of the note to measure
• Very high accuracy of better (less) than 0.05 Hz
• Automatic reduction of unwanted background sounds and disturbances
• Very large range: E0 up to C9
• Frequency of the A is configurable between 430 and 450 Hz
• Transpose