Frequency-domain processing enables efficient audio coding for monophonic and multichannel signals

Evidence

Various methods exist to map a time-domain audio signal to the frequency domain, and different methods have been developed for different applications. If the signal is to be processed in the frequency domain, the time–frequency transform methods used should be robust against aliasing artefacts. Processing in the time–frequency domain enables the use of efficient coding strategies for monophonic and multi-channel signals. — Ville Pulkki, Matti Karjalainen, Communication Acoustics- An…, 2178

Categorization

• DEFINE: Establishes why time-frequency transforms matter and the aliasing constraint that shapes transform choice.