1 / 46

LOOK

LOOK. Sound: Properties and Functions. Theatre Arts 1(T). Introduction to Sound. Acoustics the study of sound; the science that deals with the production, control, transmission, reception, and effects of sound. Properties. of Sound. Science. The. Sound is a vibration of a medium

aggie
Download Presentation

LOOK

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. LOOK

  2. Theatre Arts 1(T) Sound: Properties and Functions Theatre Arts 1(T)

  3. Theatre Arts 1(T) Introduction to Sound Acoustics • the study of sound; the science that deals with the production, control, transmission, reception, and effects of sound

  4. Properties of Sound Science The

  5. Theatre Arts 1(T) • Sound is a vibration of a medium • Medium – a material that transmits energy Speed of sound – varies depending on pressure, temperature • 1129 ft/sec, 770 mi/hr in air, • 4708 ft/sec, 3210 mi/hr in water • 3.17 mi/sec in steel What we hear is based on perceived vibrations

  6. Sound Measuring

  7. Theatre Arts 1(T) Sound travels in waves • A transference of energy • Energy transfers via rapid changes in the density of a medium

  8. Waves are measureable

  9. Theatre Arts 1(T) Wavelength (λ) • the distance between repeating units of a wave pattern; • measured from one crest to the next repeated crest, or one trough to the next repeated trough λ of a 10,000Hz sound –> 1.35 inches λ of a 188Hz sound –> 6 feet

  10. Theatre Arts 1(T) Amplitude (A) • The distance of the crest or trough from neutral • Amplitude in sound waves is representative of intensity, or loudness • Loudness is measured in decibels (dB) <85 dB is considered harmful <95 dB (About what an iPod will put out) can cause permanent damage if exposed for prolonged periods <125 dB (Jet engine) can cause instant hearing damage

  11. Theatre Arts 1(T) Frequency (f) • The number of occurrences of a repeated event per unit of time; pitch • Generally measured in occurrences per second, or Hertz (Hz) • Human hearing is said to be “20 to 20,” or from 20 Hz to 20,000 Hz (or 20kHz) Actually more like 22 Hz to 18kHz, and continues to decrease with age

  12. Theatre Arts 1(T) Frequencies (Do you hear what I hear?) • 440 Hz • 1000 Hz • 1500 Hz • 2 kHz • 4 kHz • 8 kHz • 14 kHz • 15 kHz • 16 kHz • 17 kHz • 18 kHz • 19 kHz • 19.5 kHz

  13. Theatre Arts 1(T) • Adding two different frequencies results in a different frequency, reinforced in some places & cancelled in others

  14. Theatre Arts 1(T) • Adding two identical frequencies in the same phase reinforces the sound Adding two identical frequencies 180° out of phase cancels out the sound

  15. Theatre Arts 1(T) Few sounds are pure tones; most sounds are made up of a combination of frequencies and amplitudes • Timbre - /tam’-bər/ a quality given to a sound by its overtones (harmonics) • Harmonic – a frequency that is an integral multiple of the fundamental

  16. LOOK Again

  17. Theatre Arts 1(T) Perception of Sound • Loudness – Distance decreases the loudness of a sound; air absorbs higher frequencies • Hearing– humans hear 2,000 - 4000 Hz best, so this range is perceived louder than others • Masking – one sound obscured by others; lower usually masks higher

  18. Theatre Arts 1(T) Functions of Sound in Theatre • Sound Effects – (FX) used to illustrate ideas in a play or establish ambience, i.e. radios, explosions, trees rustling in the wind, crickets at night, sounds of machinery in a manufacturing plant • Underscoring – music used to establish or reinforce mood • Live Reinforcement – microphones used to boost the loudness of existing sound(s)

  19. Theatre Arts 1(T) The Path of Sound • Source – can be live or pre-recorded • Microphones, pick-ups, synthesizers • Or CD, tape, MD, mp3 or other computer file type, record, etc. • Amplifier – adds power to source signal, boosts mic, instrument, or line level to speaker level • Processor- can effect signals with effects or enhancements • Output – either speaker or recording device

  20. The Sound System 8/24/2014 Theatre Arts 1(T)

  21. Input sources: 8/24/2014 Theatre Arts 1(T)

  22. Microphone Synthesizer Computer CD Equalizer Patch Panel Effects Processor Compressor Amplifier Delay Amplifier Crossover Mixing Console 8/24/2014 Theatre Arts 1(T)

  23. Input sources: -Microphones 8/24/2014 Theatre Arts 1(T)

  24. Microphone Synthesizer Computer CD Equalizer Patch Panel Effects Processor Compressor Amplifier Delay Amplifier Crossover Mixing Console 8/24/2014 Theatre Arts 1(T)

  25. Input sources: -Microphones -Synthesizer 8/24/2014 Theatre Arts 1(T)

  26. Microphone Synthesizer Computer CD Equalizer Patch Panel Effects Processor Compressor Amplifier Delay Amplifier Crossover Mixing Console 8/24/2014 Theatre Arts 1(T)

  27. Input sources: -Microphones -Synthesizer -Computer 8/24/2014 Theatre Arts 1(T)

  28. Microphone Synthesizer Computer CD Equalizer Patch Panel Effects Processor Compressor Amplifier Delay Amplifier Crossover Mixing Console 8/24/2014 Theatre Arts 1(T)

  29. Input sources: -Microphones -Synthesizer -Computer -CD 8/24/2014 Theatre Arts 1(T)

  30. Microphone Synthesizer Computer CD Equalizer Patch Panel Effects Processor Compressor Amplifier Delay Amplifier Crossover Mixing Console 8/24/2014 Theatre Arts 1(T)

  31. Signal Processing: 8/24/2014 Theatre Arts 1(T)

  32. Signal Processing: -Equalizer 8/24/2014 Theatre Arts 1(T)

  33. Microphone Synthesizer Computer CD Equalizer Patch Panel Effects Processor Compressor Amplifier Delay Amplifier Crossover Mixing Console 8/24/2014 Theatre Arts 1(T)

  34. Signal Processing: -Equalizer -Effects Processor 8/24/2014 Theatre Arts 1(T)

  35. Microphone Synthesizer Computer CD Equalizer Patch Panel Effects Processor Compressor Amplifier Delay Amplifier Crossover Mixing Console 8/24/2014 Theatre Arts 1(T)

  36. Signal Processing: -Equalizer -Effects Processor -Compressor 8/24/2014 Theatre Arts 1(T)

  37. Microphone Synthesizer Computer CD Equalizer Patch Panel Effects Processor Compressor Amplifier Delay Amplifier Crossover Mixing Console 8/24/2014 Theatre Arts 1(T)

  38. Signal Processing: -Equalizer -Effects Processor -Compressor -Delay 8/24/2014 Theatre Arts 1(T)

  39. Microphone Synthesizer Computer CD Equalizer Patch Panel Effects Processor Compressor Amplifier Delay Amplifier Crossover Mixing Console 8/24/2014 Theatre Arts 1(T)

  40. Signal Processing: -Equalizer -Effects Processor -Compressor -Delay -Crossover 8/24/2014 Theatre Arts 1(T)

  41. Microphone Synthesizer Computer CD Equalizer Patch Panel Effects Processor Compressor Amplifier Delay Amplifier Crossover Mixing Console 8/24/2014 Theatre Arts 1(T)

  42. Output Sources: 8/24/2014 Theatre Arts 1(T)

  43. Output Sources: -Amplifier 8/24/2014 Theatre Arts 1(T)

  44. Microphone Synthesizer Computer CD Equalizer Patch Panel Effects Processor Compressor Amplifier Delay Amplifier Crossover Mixing Console 8/24/2014 Theatre Arts 1(T)

  45. Output Sources: -Amplifier -Loud Speakers 8/24/2014 Theatre Arts 1(T)

  46. Microphone Synthesizer Computer CD Equalizer Patch Panel Effects Processor Compressor Amplifier Delay Amplifier Crossover Mixing Console 8/24/2014 Theatre Arts 1(T)

More Related