Beatsविस्पंद

NCERT Fig 14.15 · interactive diagram

Parts and their functions

• Wave of frequency ν₁ (ν₁ आवृत्ति की तरंग) — For example a tuning fork of 11 Hz (scaled).
• Wave of frequency ν₂ (slightly different) (ν₂ आवृत्ति की तरंग (थोड़ी भिन्न)) — For example 9 Hz: the two go in and out of step.
• Resultant: waxing and waning (परिणामी: घटता-बढ़ता) — s = 2a cos(ω_b t) cos(ω_a t): a tone of the average frequency whose loudness rises and falls.
• Amplitude envelope (आयाम आवरण) — Loud maxima occur |ν₁ − ν₂| times per second.
• Beat frequency ν₁ − ν₂ (विस्पंद आवृत्ति ν₁ − ν₂) — Used to tune instruments: tighten or loosen until the beats vanish.

Original diagram drawn by Simple Learning Hub, based on NCERT Fig 14.15. Report a mistake