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Audio, example: for a spoken conversation between two people - Coggle…
Audio
is represented as
audio signal
digital signal
discrete time, quantized amplitude signal.
analog signal
continuous changing level of electrical voltage
is
physical or
electrical representation
of
audio data
is
digital representation
of
audio information
is
meaningful content or knowledge
conveyed by
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is
is
is
sound
within
acoustic range
of
humans
is a
mechanical disturbance
that
propagates
through
elastic medium
sound waves
microphone
electric signal
ADC
digital signal
compression
file format
.flac (Free Lossless Audio Codec)
.mp3 (MPEG-1 Audio Layer 3)
.wav (Waveform Audio File)
Sampling
is the process of
measuring the value of a continuous signal at fixed time steps
Sampling rate a.k.a.
sampling frequency
is
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measuring unit is
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Bit depth
Resampling
example: for a spoken conversation between two people
it is the words, emotions and context of the conversation.
digital representation of the recorded sound wave, which consists of the sequence of numerical values representing the amplitude or frequencies of the audio signal.