Paul vdV
Member
After doing some small scale revalving and rewaxing I wanted to make the next step: tuning an accordion.
Some time ago I bought a cheap Hohner Club IIB (Yes a melodeon, but not too big. The construction was another puzzle, but has been solved, too.) Sounding the thing made it clear that all the reeds were sounding, but way out of tune, no music could be played. Fine experimental instrument to me. The bass side is working now, so time for the treble side.
So for the last weeks I have been searching the web (including this fine forum!) for information, especially on the musette tuning for the offset reeds.. There is a lot of information. Still things kept being vague to me. Then I came across the the videos bij Lester Bailey. He has a great series on hot rodding a Hohner Melodeon. (In my opinion, maybe the best series on YouTube at this moment on free reed instrument repair?) In the installment on tuning the treble reeds he links to the table he uses for tuning the offset reeds. It is this link.
On this there are three rows with numbers that give the amount of cents you have to tune the offset reeds higher to reach a certain amount of musette. Analysing the three rows I realised that there are two factors in play: the amount of tremelo you want, indicated for the A4 reed (which can be anything between 435 Hz and 445 Hz) and the rate in which one wants the tremelo to be in the higher and lower reeds. The Hohner row lowers the amount of cents by 6 each octave. The other rows on the table use different amounts, though this doesnt seem to be an arithmetic relationship that I can discern.
To check myself I, I downloaded the Instrument-tuner. This enabled me to see in wave form two sounding reeds in an accordion and made notes of the values I saw. Since I started to get into accordions 2 years ago I was given several accordions by friends. I have about 7 now, one bough second hand. Although most are in need of tuning, the tuning patterns were clearly visible. All this information, together with the formula to calculate the next note from an original note, was compiled into Excel. I introduduced the 3 variables mentioned in the worksheet. Doing this I was perfectly able to reproduce Lester Baileys tuning chard for the 3 tunings it contains. Furthermore I was able to reproduce a very nice tuning a professional did in my Hohner Tango II, as well the standard tuning Hohner has used for the 2-reed musette sound. The results are included in the Excel sheet. So, by putting all this together, one can calculate the several musette tunings which are mentioned on the internet for tuning purposes.
I know that it is perfectly doable to tune the offreeds by counting the beats, doubling this for the octave and subdividing for the notes in between, it is just me wanting to understand how this all works ...
This all leaves some questions open:
For those who want to improve on the file: the unlocking code is accordion
Some time ago I bought a cheap Hohner Club IIB (Yes a melodeon, but not too big. The construction was another puzzle, but has been solved, too.) Sounding the thing made it clear that all the reeds were sounding, but way out of tune, no music could be played. Fine experimental instrument to me. The bass side is working now, so time for the treble side.
So for the last weeks I have been searching the web (including this fine forum!) for information, especially on the musette tuning for the offset reeds.. There is a lot of information. Still things kept being vague to me. Then I came across the the videos bij Lester Bailey. He has a great series on hot rodding a Hohner Melodeon. (In my opinion, maybe the best series on YouTube at this moment on free reed instrument repair?) In the installment on tuning the treble reeds he links to the table he uses for tuning the offset reeds. It is this link.
On this there are three rows with numbers that give the amount of cents you have to tune the offset reeds higher to reach a certain amount of musette. Analysing the three rows I realised that there are two factors in play: the amount of tremelo you want, indicated for the A4 reed (which can be anything between 435 Hz and 445 Hz) and the rate in which one wants the tremelo to be in the higher and lower reeds. The Hohner row lowers the amount of cents by 6 each octave. The other rows on the table use different amounts, though this doesnt seem to be an arithmetic relationship that I can discern.
To check myself I, I downloaded the Instrument-tuner. This enabled me to see in wave form two sounding reeds in an accordion and made notes of the values I saw. Since I started to get into accordions 2 years ago I was given several accordions by friends. I have about 7 now, one bough second hand. Although most are in need of tuning, the tuning patterns were clearly visible. All this information, together with the formula to calculate the next note from an original note, was compiled into Excel. I introduduced the 3 variables mentioned in the worksheet. Doing this I was perfectly able to reproduce Lester Baileys tuning chard for the 3 tunings it contains. Furthermore I was able to reproduce a very nice tuning a professional did in my Hohner Tango II, as well the standard tuning Hohner has used for the 2-reed musette sound. The results are included in the Excel sheet. So, by putting all this together, one can calculate the several musette tunings which are mentioned on the internet for tuning purposes.
I know that it is perfectly doable to tune the offreeds by counting the beats, doubling this for the octave and subdividing for the notes in between, it is just me wanting to understand how this all works ...
This all leaves some questions open:
- Am I missing things?
- The amount of cents that goes down with each climbing octave: is there some reasoning behind this that someone can explain?
For those who want to improve on the file: the unlocking code is accordion