Data processing: generic control systems or specific application – Specific application – apparatus or process – Digital audio data processing system
Reexamination Certificate
2005-05-17
2005-05-17
Sircus, Brian (Department: 2836)
Data processing: generic control systems or specific application
Specific application, apparatus or process
Digital audio data processing system
C381S056000, C381S061000, C381S101000, C381S102000, C381S104000, C381S107000, C084S633000, C084S665000
Reexamination Certificate
active
06895290
ABSTRACT:
Minimizing the damaging effects of loud music but with minimal reduction in aesthetic quality of the music. When music presented through an audio is sampled in order to determine average frequency, music having very low average frequencies is predictably likely to be played louder than sampled music having higher average frequencies. This unexpected observation is based upon a human factor, i.e. rock and related music that is ordinarily composed and presented at relatively low frequencies, e.g. 500 to 1000 Hz is likely to be played on the audio system at very high volume because of the tastes of its listeners. An audio system for a data processor controlled presentation of music with a set up for minimizing the damaging effects of loud music comprising an implementation for predetermining a minimum average frequency of music being presented in combination with measuring whether the music being presented falls below said minimum average frequency for a sampling period. Then, based on the above recognition, there is provided a device for automatically limiting the music being presented to an audio volume below a predetermined level when said measured average frequency for said sampling period is below said minimum average frequency.
REFERENCES:
patent: 4542525 (1985-09-01), Hopf
patent: 5434926 (1995-07-01), Watanabe et al.
patent: 6139505 (2000-10-01), Murphy
Awada Faisal M.
Brown Joe Nathan
Burkes Philip Bernard
International Business Machines - Corporation
Kraft Jerry B.
McBurney Mark E.
Shin Marc L
Sircus Brian
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