Fellow tuners, lend me your ears.
I'm working with the PTG Education Committee to develop some online tuning-related "aural discernment" tests. In order to create these questions, I need not only good recordings of each note, but also well "de-tuned" notes so that I can create questions like "which of these fifths is too narrow?" So I need to take "good" notes and make copies that are 1, 2, or 3 cents sharp or flat.
Turns out detuning is a pretty complicated digital operation. I've tried several muscular audio editors, with mixed results until now. Maybe I've found one that will suffice. So please help me decide by taking a ten-question aural discrimination assessment. Here's the setup:
You hear a note (either D3 or C4) and have to decide if it is flat, sharp, or about right in relation to the fourths and fifths below and above. There are buttons to play the fourths and fifths.
As you listen, for example to the G2-D3 and D3-A3 fifths, you decide whether the one of the fifths is noisier than the other. If the upper (D3-A3) fifth is noisy, that fifth is probably narrower than ET; and the G2-D3 fifth would sound relatively clean, since it's closer to a pure fifth than the normal 2-cents-narrow; so you'd say the D3 is sharp. Similarly with the fourths. It's a very interesting aural exercise, but is it accurate enough? (Kudos to Ed Sutton for suggesting this exercise)
The test picks a random 10 from a total of fourteen of these slides. Seven of them are note D3 and seven are C4. The seven variations on each note are
- One is "about right"
- Three are sharp by 1, 2, and 3 cents
- Three are flat by 1, 2, and 3 cents
I need to know how accurate or inaccurate the resulting sounds are.
There is a space at the right for you to add your comments, especially when you disagree with the "correct" answer. Your help will be invaluable.
Here's the link:
https://360.articulate.com/review/content/f3d6db0c-2930-42fa-9a3b-5a7d0d06fa0d/reviewThanks in advance.
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Jason Kanter
Lynnwood WA
425-830-1561
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