What is the source of all sound?
The source of a sound vibrates, bumping into nearby air molecules which in turn bump into their neighbours, and so forth. This results in a wave of vibrations travelling through the air to the eardrum, which in turn also vibrates.
What type of wave does sound travel in?
longitudinal waves
Sound waves in air (and any fluid medium) are longitudinal waves because particles of the medium through which the sound is transported vibrate parallel to the direction that the sound wave moves.
When did the tuning fork stop producing sound?
A tuning fork producing sound will stop producing sound when you touch it. 2. Sound cannot pass through vacuum.
What normally determines the frequency of sound waves?
Terms in this set (19) What normally determines the frequency of sound waves? The Pitch of the sound (High pitch = High Frequency, Low Pitch = Low Freq.)
How is sound transmitted?
Sound is transmitted through gases, plasma, and liquids as longitudinal waves, also called compression waves. It requires a medium to propagate. Through solids, however, it can be transmitted as both longitudinal waves and transverse waves.
What are the 3 sources of sound?
Sources of Sound Energy
- Acoustic Instruments. •••
- Electronic Instruments. Electrical vibrations are the starting point of sounds from electronic organs and synthesizers.
- Living Things. Animals and people make sounds with their vocal cords, their mouths and other body parts.
- Machines.
- Nature.
What is tuning fork used for?
The tuning fork vibrates at a set frequency after being struck on the heel of the hand and is used to assess vibratory sensation and hearing (air conduction and bone conduction).
Which of the following is most likely to transmit sound best?
Sound waves travel fastest in solids (compared to liquids and gases) because solids are more dense. The fastest which sound can move is when it is moving through a vacuum.
Can a computer output audio to a TV?
Computers usually output audio through numerous connections, none of which are connections commonly used by home theater systems. This means a chain of wires and adapters is required. But now HDMI allows users to bundle audio and video and send it all through a single cable.
How does a digital audio system work?
A digital audio system starts with an ADC that converts an analog signal to a digital signal. The ADC runs at a specified sampling rate and converts at a known bit resolution. CD audio, for example, has a sampling rate of 44.1 kHz (44,100 samples per second), and has 16-bit resolution for each stereo channel.
What is the purpose of converting audio files to digital format?
Conversion to a digital format allows convenient manipulation, storage, transmission, and retrieval of an audio signal. Unlike analog audio, in which making copies of a recording results in generation loss and degradation of signal quality, digital audio allows an infinite number of copies to be made without any degradation of signal quality.
What video cards support PC audio over HDMI?
The video cards which support PC audio over HDMI include ATI Radeon cards of the 3000 series or newer and Nvidia cards of the 9000 series or newer. The ATI cards are the easiest to use. Simply install the card and the drivers and the audio works.