Falsetto.
the frequency of a sound wave is higher if its wavelength is shorter
ultrasonic
they can here higher sound than a human
One factor in the pitch of a human sound is the frequency of the sound wave. The higher the frequency, the higher the pitch. Another factor is the tension of the vocal cords, with tighter cords producing higher pitches. Additionally, the length and thickness of the vocal cords play a role in determining pitch.
Sound intensity is the amount of sound energy that flows through a given area in a given time. It is measured in watts per square meter (W/m^2). The higher the intensity, the louder the sound.
Vibrations are perceived by the human ear as sound. Faster vibrations produce higher-pitched sounds, while slower vibrations sound lower-pitched.
The loudness of a sound depends on the amplitude of the sound wave. A higher amplitude corresponds to a louder sound. The human perception of loudness also depends on the frequency of the sound wave and the sensitivity of the human ear.
Pitch depends on the frequency of a sound wave. Higher frequency sound waves result in higher pitch, while lower frequency sound waves result in lower pitch. The pitch of a sound is perceived by the human ear based on the frequency of the sound wave.
The sound waves produced by a whistle are at a higher frequency than that of a beaten drum, causing the sound registered by human ears to be at a "higher pitch". Dog whistles can only be heard by dogs because the sound waves produced are at such a high frequency, human ears cannot detect them.
CT Scan. Ultra sound. Xray.
Sound waves with frequencies above the normal human range of hearing are called ultrasoundUltrasoundUltrasonic for frequencies higher than a human can hear, and infrasonic for those frequencies below the human threshold of hearing.
The measure of the loudness or intensity of sound is called decibels (dB). It quantifies the level of sound pressure that is perceived by the human ear. The higher the decibel level, the louder the sound.