1. Evaluate the difference in how analog audio and digital audio are created
or captured. LO 11.3
Answer: Analog refers to audio recorded using methods that replicate the original sound waves. Vinyl records and cassette tapes are examples of analog mediums. Digital audio is recorded by taking samples of the original sound wave at a specified rate.
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2. Compare and contrast sample rate and sample size. LO 11.1
Answer: : simply amount of data per second, this can vary within a file (variable bit rate) or have a static value
: a frequency of how many times audio is measured per second, usually measured in kilohertz (kHz); a usual number you might see is 44.1 kHz. This is tied directly to or the number of bits measured in each cycle
3. Write a brief explanation of the importance of sound cards. LO 11.4
Answer: A sound card (also known as an audio card) is an internal that provides input and output of and from a under control of . The term sound card is also applied to external audio interfaces used for applications.
4. Explain the difference in the file formats WAV and WMA. Which is of
Higher quality? LO 11.2 and 11.3
Answer: Â Windows Media Audio or is
a recent file format that was created by Microsoft as the default for their applications.
WAV is simply a shortened version of WAVE.
5. Explain the need for safety when using speakers and headphones.
Answer:Â Headsets are capable of delivering sounds at loud volumes and high pitched tones. Under certain circumstances, exposure to such sounds can result in permanent hearing loss damage.
6. List in order the steps needed to record using a microphone. LO 11.5
Answer: 1. Using sound Recorder 2. Start recording 3. Sing, say, or voice whatever you want recorded.
1. Stop recording
2. Save the recording
7. Evaluate some audio editing options possible in sound editing
Software. LO 11.6
Answer: Audacity, Audacity does almost everything you want from a DAW, and its open-source. Beside recording and editing, the post-processing you can do in the software rivals pretty much anything but the absolutely highest-end professional suites.
8. Distinguish between the MIDI and ripping process of capturing sounds or
Music. LO 11.6
Answer: To play back a MIDI signal, a MIDI OUT connector on the interface to your recording system must be connected to the MIDI IN connector of a MIDI instrument or sound generator. The audio output of this instrument or sound generator must be connected to an amplifier or loudspeakers to make the sound audible.
9. Compare the advantages and disadvantages of using a lapel microphone
And a mounted microphone. LO 11.5
The advantages are:
The disadvantages are:
10. Defend the decision to use a codec that is designed for speech audio
Rather than music audio. LO 11.
Answer: Â The voice encoder supports three modes: speech, music, and mixed. Each mode is optimized to get the best results for that type of content.