Digital Audio Flashcards
If our sample rate is set to 44.1kHz, how many samples are taken each second?
44,100
The component that makes the extremely accurate timing possible in digital systems is called:
A crystal Oscillator
Explain what an audio interface does.
An audio interface is a device that converts an analog electric audio signal into a digital code.
The quality of the quantization is determined by what?
Bit depth
Which of the following are lossless audio file formats? MP3 ALAC WAV FLAC AIFF
FLAC and ALAC
The quality of the sample is determined by what?
The sample rate
What are the three file format categories?
Uncompressed, Lossless, and Lossy
Which of the following is the Lossy file formats? FLAC MP3 WAV AAC AIFF
MP3 and AAC
Define jitter
An audible discrepancy that occurs in digital audio systems due to incorrect timing placement of samples. The digits of code may be correct, but their timing may be asynchronous.
What is needed of an engineer is syncing more than one interface together?
A master clock
Select the uncompressed audiobook file formats: MP3 ALAC FLAC AIFF WAV
WAV and AIFF
What is Nyquist Theorem?
The sampling frequency should be at least twice the highest frequency contained in the analog signal.
Select the three types of jitter discussed in the lesson: Noise jitter Coffee jitter Periodic jitter WOW jitter Clear jitter
Noise jitter, periodic jitter, and WOW jitter
How many values can a 16 bit integer store?
65,535
What is the result in adding a bit of resolution?
Double the amount of possible values.
