by Prof. Lydia Ayers - PowerPoint PPT Presentation

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  1. Exploring Music Lab 8 by Prof. Lydia Ayers

  2. Objectives • Finish any work not completed in the previous lab • Demonstrate composition to TA • Record “Cat” Samples • Practice Scales • Write an outline for your Final Project • Work on your composition

  3. Please Record Some Samples • One spoken tone of the word “cat” • One sung tone of the word “cat” • One other sound that you think fits, such as “meow” • LADIES: • One additional spoken tone of “cat” • And one sample of the word “kitty” • GENTLEMEN: And one sample of “hey” • If anyone has a real cat, you can also record some of his or her sounds • 44,100 SAMPLING RATE, 16 BIT, MONO – PLEASE!! • Please check whether you have clipping or sounds in the background • Send to: cslcj@ust.hk

  4. Just Major Scale in CoolEdit • Open your sung cat sample or any other pitched sample you have in Cool Edit (first make a backup copy of your sample!) • Find the frequency ratio for a major 2nd in just intonation • Just Intonation ratios come from the harmonic series, review course notes if you need more details • Click Effects -> Time/Pitch -> Stretch and choose Pitch Shift

  5. Just Major Scale in CoolEdit • Choose Constant Stretch and Pitch Shift • Type the frequency ratio in the window • Listen to the resulting sound

  6. Just Major Scale in CoolEdit • The new sound is extremely high because the ratio in Cool Edit is treated as a percent, so undo the stretch, change the ratio to 112.5 and try again

  7. Just Major Scale in CoolEdit • The new sound is lower than the original sample, so undo the stretch, change the ratio to 1/112.5 and try again • This produces the correct pitch, so open another CoolEdit window (hit the "New" button in the toolbar)and paste the pitch-shifted sample into it • Complete the major scale by pitch-shifting additional copies of your ORIGINALsample, and mix-pasting them into the second Cool-Edit window • You will hear some distortion of the sound quality on the highest tones • SAVE the major_scale.wav file

  8. Slendro Scale in CoolEdit • Make a Slendro Scale in CoolEdit • The Indonesian Slendro Scale divides the octave into 5 approximately equal parts • To calculate the ratios for equal parts of an octave, use 21/5 as the frequency ratio for each part • You can shift the sample again after you copy the shifted tone into the second CoolEdit window, you don’t need the original sample • SAVE the slendro_scale.wav file

  9. Playing the Scales • Listen to the scales you made in CoolEdit and try to play them on your instrument

  10. Find the Frequencies of the Pitches You Will Use in Your Piece • Record the sounds your instrument produces • Use the wavanal program to find the frequencies of the sounds • On the Web page for wavanal, there is also a pitcher program which may be helpful (it is probably not in Lab 4 now) • Organize the frequencies into a scale

  11. Final Project Outline • Which instrument are you building and playing for your piece? • We will have the bowed string demos on Wednesday • Who is performing your piece? • Which instruments are they playing?

  12. Final Project Outline • Describe the tuning of your instrument • Try to describe the basic musical ideas you will explore in your piece • Developing some thoughts about these things should help you answer the composition question and final project progress report on the Midterm Exam

  13. Composition • Continue working on your composition • Start writing program notes about your ideas as you work on your composition because it’s more difficult to remember everything later • These program notes can change as you continue working on your piece, so don’t worry about making them perfect the first time • Use the Web link to the program notes template