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How to Tune Pianos

The Hobby, Skill, and Career of Piano Tuning



Temperament Analysis 010



PIANO TUNING TEMPERAMENT

ANALYSIS AND SCORING

By Mark Cerisano, RPT

howtotunepianos.com

This is a free analysis generated by a recording of M3’s and P4’s submitted to me by one of my subscribers.

Contact Me Now if you would like a free analysis of one of
your temperaments.


Piano: Kurzweil K2600xs
Submitted by: 010


BEAT SPEED PROGRESSIONS


YOUR M3 RESULTS:

Goal: Chromatically increasing by 0% to 12%

M3 Progression

Mark: 88% (Goal 80%)

M3, filtered:

M3, unfiltered:


YOUR P4 RESULTS

Goal: 0.5 bps to 1.5 bps

Client 004-01 P4 Progression

Mark: 85% (Goal 80%)

P4, filtered

P4, unfiltered


HOW TO USE THE GRAPHS AND AUDIO TO IMPROVE YOUR EAR

1. Listen to the recordings while looking at the graphs.
2. Listen to the filtered recordings and try to confirm aurally that the beat speeds are following what the graph says.
This improves your Beat Speed Ratio Sensitivity – Your ability to hear small differences in beat speeds.
3. Listen to the unfiltered recordings and try to hear the specific beating partial within the unfiltered recording.
This improves your Tuner’s Ear – Your ability to filter frequencies at will.


GRADING OF THE TEMPERAMENT

Marking Criteria:

Start with 100%

Chromatic M3 Beat Speed Ratios

Goal: Increase by 0% to 12%

Increase by 12% to 24% – Lose 3%

Increase by more than 24% – Lose 6%

Slowing down by 0% to 12% – Lose 3%
Slowing down by more than 12% – Lose 6%

Chromatic P4 Beat Speeds

Goal: 0.5bps to 1.5bps wide

1.5bps to 2.5bps – lose 3%

More than 2.5bps – lose 6%

0.5bps narrow to 0.5bps wide – lose 3%

More than 0.5bps narrow – Lose 6%


INSIGHTS

Notes

1. I did not do an analysis of which note could be corrected because I believe the pitch was varying wildly.

2. The reason why I think this, is that the speed of the M3’s was not constant.

3. Look at the below graph showing F3A3 over time.

4. The beat speed starts out at 7.5bps, then quickly jumps to 8.2bps, then settles down to 5.8bps.

5. This is not a stable piano with stable samples in my humble opinion.

6. Look at the graph and listen to the filtered beats and try to hear the variation in the beat speed.

Temperament corrections

F3A3 filtered


In refining a temperament, we identify two or more problems that suggest the same note may be too high or too low,

and then change that note to fix multiple problems.

This reiterative method helps us improve the temperament bit by bit.

This is why it is imperative that, if you want to improve your aural tuning,

you must improve your beat speed recognition.

Exercises like these can help greatly.

You are encouraged to read the analysis and confirm aurally

that you can hear the findings, and understand

how the improvements suggested would improve the beat speed progressions.

In this way, you will improve your ability to rationalize the logic,

and improve your ear to be able to hear smaller and smaller beat speed differences.

Improving these skills will greatly improve your temperament.

Keep up the good work and don’t give up! You’re getting better all the time!

Mark





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