Howtosignalprocessing
- What is masking in psychoacoustics?
- What is frequency masking and temporal masking?
- What is masking how it is related to audio compression?
- What is the general concept behind psychoacoustic compression?
What is masking in psychoacoustics?
Masking is the process by which the detection threshold of a sound (called 'the signal') is increased by the presence of another sound (called 'the masker'). The amount of masking is defined as the increase (in decibels) in the detection threshold of a sound (signal) due to the presence of a masker sound.
What is frequency masking and temporal masking?
Auditory masking in the frequency domain is known as simultaneous masking, frequency masking or spectral masking. Auditory masking in the time domain is known as temporal masking or non-simultaneous masking.
What is masking how it is related to audio compression?
An audio compression technique that eliminates sounds that are quieter when compared to sounds with similar frequencies that are much louder.
What is the general concept behind psychoacoustic compression?
The psychoacoustic model provides for high quality lossy signal compression by describing which parts of a given digital audio signal can be removed (or aggressively compressed) safely—that is, without significant losses in the (consciously) perceived quality of the sound.
