Page 152 - The Master Handbook Of Acoustics

127
ANALOG AND DIGITAL SIGNAL PROCESSING

A/D Read-write Multiplier
converter memory

Programmable
Clock
and register read-only Accumulator
memory
FIGURE 6-8

Block diagram of a typical digital filter, in this case one of the finite impulse response
(FIR) type. The type of filter is determined by the read-only program.

Mixing two signals (convolution)
Comparing two signals (correlation)

Changing ac signals to dc (rectification)
Amplifying signals
Acting as a transformer

Spectral analysis
Speech processing, recognition, etc.
Noise cancellation

Music synthesis and processing.

Specific tasks ideally suited to digital signal processing include:
Subsonic filters

Ultrasonic filters
Limiters
Compressors

Expanders
Companders
Noise gates

Bass correction