The main emphasis of this chapter is on the practical applications of psychoacoustics in the field of perception and reproduction of sound, and many scientific details are therefore omitted. In fields other than audio, such as the transmission of electrical power, the adaption to the final receivers is very well established and generally applied for transmission from power plant to power plant, as well as from power plant to factories, and even to individual households. In the field of transmitting information, the same rule holds as for power transmission. All of the efforts in improving electroacoustic information transmission—including recording—have to be seen from the perspective of the final receiver, the human auditory system. This perspective has many more advantages in audio engineering, such as in instrumentation and with public-address applications. The specific-loudness versus critical-band-rate versus time pattern contains all the information that is used by the auditory system to produce the different hearing sensations. A reproduction accuracy of 1 dB in excitation level, corresponding to a relative value of 7% in specific loudness, is sufficient for practical applications.
[1]
B. Bauer,et al.
Researches in loudness measurement
,
1966
.
[2]
Martin Link,et al.
Masking-Pattern Adapted Subband Coding: Use of the Dynamic Bit-Rate Margin
,
1988
.
[3]
G. Stoll,et al.
High quality audio bit-rate reduction system family for different applications
,
1990,
IEEE International Conference on Communications, Including Supercomm Technical Sessions.
[4]
Hugo Fastl,et al.
Fluctuation Strength of Modulated Tones and Broadband Noise
,
1983
.
[5]
E. Zwicker.
The inner ear,a sound processing and a sound emitting system
,
1988
.
[6]
Bronwyn L. Jones,et al.
A New Loudness Indicator for Use in Broadcasting
,
1981
.