Which pair of changes will increase both the loudness and the pitch of a sound produced by a guitar string?
Increasing amplitude and increasing frequency
The loudness of a sound depends on the amplitude of the vibration: a larger amplitude means the string moves the surrounding air more strongly, so the sound is louder. The pitch of a sound depends on the frequency: a higher frequency of vibration is perceived as a higher pitch.
To make a guitar note both louder and higher, one must therefore increase the amplitude (pluck the string harder) and increase the frequency (shorten the vibrating length or tighten the string). Decreasing either amplitude or frequency would make the sound softer or lower, so those combinations cannot raise both loudness and pitch.
Hence, the answer is Increasing amplitude and increasing frequency.
Similar Questions
Which of the following sounds has the lowest pitch?
Which of the following changes will most likely reduce the clarity of an echo in a large room?
If two sounds have the same frequency but different amplitudes, what will be different?
Which of the following statements best explains why sound can NOT travel through a vacuum?
Which of the following actions would most effectively reduce reverberation in a large auditorium?
When a tuning fork vibrates and produces sound, what type of waves is created in the air?
Which of the following conditions is necessary to hear an echo clearly?
What is the role of a medium in the propagation of sound?
Why can humans NOT hear the sound produced by a bat?
Which of the following statements best explains why striking a bell in a vacuum does NOT produce sound we can hear?
Important Questions from Waves
Which of the following is related to Doppler effect?
- The velocity v(x) of a particle moving in one dimension is given by v(x) = v 0 sin \(\rm\left(\frac{\pi x}{x_0}\right) \) , where v 0 and x 0 are positive constants of appropriate dimensions. If the particle is initially at x/x 0 = ϵ, where |ϵ| ≪ 1, then, in the long time, it
The position of a particle in one dimension changes in discrete steps. With each step it moves to the right, however, the length of the step is drawn from a uniform distribution from the interval \(\left[ {{\rm{λ }}\,{\rm{ - }}\,\frac{{\rm{1}}}{{\rm{2}}}{\rm{w,}}\,{\rm{λ }}\,{\rm{ + }}\,\frac{{\rm{1}}}{{\rm{2}}}{\rm{w}}} \right] \) , where λ and w are positive constants. If X denotes the distance from the starting point after N steps, the standard deviation \(\sqrt {\left\langle {{X^2}} \right\rangle \, - {{\left\langle X \right\rangle }^2}} \) for large values of N is
A particle of mass m in one dimension is in the ground state of a simple harmonic oscillator described by a Hamiltonian \(\frac{{{{\rm{P}}^{\rm{2}}}}}{{{\rm{2m}}}}{\rm{ + }}\frac{{\rm{1}}}{{\rm{2}}}{\rm{m}}{{\rm{\omega }}^{\rm{2}}}{{\rm{x}}^{\rm{2}}} \) in the standard notation. An impulsive force at time t = 0 suddenly imparts a momentum P0 = \(\sqrt {{\rm{hm\omega }}} \) to it. The probability that the particle remains in the original ground state is
In an elastic scattering process at an energy E, the phase shifts satisfy δ 0 ≈ 30°, δ 1≈ 10°, while the other phase shifts are zero. The polar angle at which the differential cross-section peaks is closest to
