Stereophonic sound system
First Claim
2. A stereo loudspeaker system comprising:
- a. a first and a second main speaker, the first main speaker being spaced apart from the second main speaker;
b. a first and a second auxiliary speaker, the first auxiliary speaker being positioned relative to the first main speaker, the second auxiliary speaker being positioned relative to the second main speaker;
c. means for blocking low frequency audio power from being delivered to the auxiliary speakers, the low frequency audio power being from about 100 Hz to about 3,000 Hz;
wherein acoustic power emanating from the first main speaker and the first auxiliary speaker blend together to form a wider dispersion angle than the acoustic power emanating from the first main speaker; and
wherein acoustic power emanating from the second main speaker and the second auxiliary speaker blend together to form a wider dispersion angle than the acoustic power emanating from the second main speaker.
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Abstract
The stereophonic sound system attenuates the audio power level delivered to the auxiliary speakers relative to the audio power level delivered to the main speakers so that the radiated sound pressure level from the auxiliary speakers is less than the radiated sound pressure level from the main speakers; blocks the tow frequency audio power from being delivered to the auxiliary speakers; and shapes the radiated dispersion pattern by controlling the phase relationship between the auxiliary speakers and the main speakers. This system widens the stereophonic sweet spot, eliminates soundstage shift, corrects off-axis response, and improves off-axis phantom image specificity, thus improving stereophonic realism over and above the present art. Stereophonic “realism” is a subjective assessment of the degree to which the sound from an audio system approaches that of live music.
12 Citations
18 Claims
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2. A stereo loudspeaker system comprising:
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a. a first and a second main speaker, the first main speaker being spaced apart from the second main speaker; b. a first and a second auxiliary speaker, the first auxiliary speaker being positioned relative to the first main speaker, the second auxiliary speaker being positioned relative to the second main speaker; c. means for blocking low frequency audio power from being delivered to the auxiliary speakers, the low frequency audio power being from about 100 Hz to about 3,000 Hz; wherein acoustic power emanating from the first main speaker and the first auxiliary speaker blend together to form a wider dispersion angle than the acoustic power emanating from the first main speaker; and wherein acoustic power emanating from the second main speaker and the second auxiliary speaker blend together to form a wider dispersion angle than the acoustic power emanating from the second main speaker. - View Dependent Claims (3, 4, 5, 6, 7, 8)
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9. A stereo loudspeaker system comprising:
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a. a first and a second main speaker, the first main speaker being spaced apart from the second main speaker; b. a first and a second auxiliary speaker, the first auxiliary speaker being positioned relative to the first main speaker, the second auxiliary speaker being positioned relative to the second main speaker; c. means for using a phase shift circuit to vary the phase relationship between the main speakers and the auxiliary speakers, the phase shift circuit controlling the phase angle relationship between audio power delivered to the main speakers and audio power delivered to the auxiliary speakers; wherein acoustic power emanating from the first main speaker and the first auxiliary speaker blend together to form a wider dispersion angle than the acoustic power emanating from the first main speaker; and wherein acoustic power emanating from the second main speaker and the second auxiliary speaker blend together to form a wider dispersion angle than the acoustic power emanating from the second main speaker. - View Dependent Claims (1, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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14-1. The stereophonic loudspeaker system of claim 13, whereby the first and second audio power level delivered to the first and second auxiliary speakers is less than the first and second audio power lower delivered to the first and second main speakers.
Specification