Filter banks split broadband signals into sub-bands much like cochlear hearing does
Evidence
A filter bank is a set of band-pass filters that is fed the same input, where the centre frequencies of the filters vary over desired ranges of frequencies. It thus separates a broadband input signal into multiple time-domain narrowband signals, which are called sub-bands. This is similar to the functioning of hearing, as will be discussed later in Chapter 7. — Ville Pulkki, Matti Karjalainen, Communication Acoustics- An…, 396
Categorization
- corroborated: 4 independent passages support this claim — Ville Pulkki, Matti Karjalainen, Communication Acoustics- An…, 396
- XREF: connects to: Sound spectrum analysis depends on banks of filters to decompose signals; The auditory system acts as a band-pass filter at each signal frequency.; The envelope of each auditory filter output is processed by a modulation filterbank (+3 more)
Broader Connections
- Sound spectrum analysis depends on banks of filters to decompose signals
#corroborates(0.90) - The auditory system acts as a band-pass filter at each signal frequency.
#exemplifies(0.85) - The envelope of each auditory filter output is processed by a modulation filterbank
#expands(0.80) - The human hearing system compromises between frequency and time resolution, unlike ideal filters
#qualifies(0.75) - Filters isolate frequency bands and are classified by their frequency response
#expands(0.75)