9 Questions
¿Cuál es la principal característica de las ondas electromagnéticas?
No requieren un medio para propagarse
¿Cuál es la unidad de medida de la frecuencia de una onda de sonido?
Hz
¿Cuál es el rango de frecuencias para el sonido audible?
Entre 20 Hz y 20,000 Hz
¿Qué sucede cuando una onda de sonido pasa de un medio a otro?
Refracta
¿Qué característica de una onda de sonido determina la percepción de su pitch?
Frecuencia
¿Qué es el timbre de un sonido?
El tono de color único de la onda de sonido
¿Cuál es la velocidad aproximada del sonido en el aire a 20°C?
343 m/s
¿Qué sucede cuando dos o más ondas de sonido se cruzan?
Interferencia
¿Cuál es la característica de una onda de sonido que determina la percepción de su loudness?
Amplitud
Study Notes
Types of Waves
- Mechanical Waves: require a medium to propagate, e.g., water waves, sound waves
- Electromagnetic Waves: do not require a medium, e.g., light waves, radio waves
Sound Waves
- Definition: a type of mechanical wave that propagates through a medium, e.g., air, water, solid objects
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Characteristics:
- Frequency (f): number of oscillations per second, measured in Hz (1 Hz = 1 oscillation per second)
- Wavelength (λ): distance between two consecutive points on a wave, measured in meters
- Speed (v): depends on the medium, approximately 343 m/s in air at 20°C
- Amplitude (A): maximum displacement of the wave from its equilibrium position
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Types of Sound Waves:
- Audible Sound: frequencies between 20 Hz and 20,000 Hz, perceivable by the human ear
- Infrasound: frequencies below 20 Hz, not perceivable by the human ear
- Ultrasonic Sound: frequencies above 20,000 Hz, not perceivable by the human ear
Sound Wave Propagation
- Refraction: bending of sound waves as they pass from one medium to another
- Reflection: sound waves bouncing back when hitting a surface
- Diffraction: bending of sound waves around obstacles
- Interference: overlapping of sound waves resulting in reinforcement or cancellation
Sound Perception
- Pitch: perceived frequency of a sound wave, higher frequency = higher pitch
- Loudness: perceived amplitude of a sound wave, higher amplitude = louder sound
- Timbre: unique "tone color" of a sound, dependent on the sound wave's frequency spectrum
Learn about the types of waves, sound wave characteristics, and how they propagate and are perceived, including frequency, wavelength, speed, amplitude, and more.
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