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US 5,689,571 AGranted
Device for producing reverberation sound
AssigneeKawai Musical Inst. Mfg. Co., Ltd.
InventorMineo Kitamura
Life of this patent
Estimating the term…
Abstract
Early reflection sounds and subsequent reverberation sounds are processed in different modes by separate processing devices in order to obtain reverberation effects close to those of natural sound as well as to freely produce reverberation effects that do not exist in natural sound. When the early reflection sound overlaps the subsequent reverberation sound in time, the early reflection sound and the subsequent reverberation sound are produced without noise. There is no need to omit either one of them. Besides, complex envelope control is executed for the early reflection sound, and the envelope levels are weighted and fluctuated. Therefore, it is possible to establish a highly sophisticated sound field.
Claims25
A device for producing reverberation sound comprising:
- at least one early reflection sound producing means for delaying externally provided sound data and controlling amplitude levels of the sound data to produce early reflection sounds;
- at least one early reflection sound control means for controlling said at least one early reflection sound producing means such that early reflection sounds are produced for every one sound data;
- at least one subsequent reverberation sound producing means for delaying the sound data and controlling amplitude level of the sound data to produce subsequent reverberation sounds, the delaying by said at least one subsequent reverberation sound producing means being different from the delaying by said at least one early reflection sound producing means, and control of the amplitude level by said at least one subsequent reverberation sound producing means being different from control of the amplitude level by said at least one early reflection sound producing means;
- and
- at least one subsequent reverberation sound control means for controlling said at least one subsequent reverberation sound producing means such that plural subsequent reverberation sounds are produced for every one sound data,
- said at least one subsequent reverberation sound producing means having at least one sound storage means for storing the sound data for each sample, the sound data being transferred within said at least one sound storage means in accordance with a predetermined delay speed coefficient.
3 more elements
A device for producing reverberation sound comprising:
- at least one early reflection sound producing means for delaying externally provided sound data and controlling amplitude levels of the sound data to produce early reflection sounds;
- at least one early reflection sound control means for controlling said at least one early reflection sound producing means such that early reflection sounds are produced for every one sound data;
- at least one subsequent reverberation sound producing means for delaying the sound data and controlling amplitude level of the sound data to produce subsequent reverberation sounds, the delaying by said at least one subsequent reverberation sound producing means being different from the delaying by said at least one early reflection sound producing means, and control of the amplitude level by said at least one subsequent reverberation sound producing means being different from control of the amplitude level by said at least one early reflection sound producing means;
- at least one subsequent reverberation sound control means for controlling said at least one subsequent reverberation sound producing means such that plural subsequent reverberation sounds are produced for every one sound data;
- and
- at least one envelope control means for controlling envelopes of the early reflection sounds to be different from envelopes of the subsequent reverberation sounds.
3 more elements
A device for producing reverberation sound comprising:
- at least one early reflection sound producing means for delaying externally provided sound data and controlling amplitude levels of the sound data to produce early reflection sounds;
- at least one early reflection sound control means for controlling said at least one early reflection sound producing means such that early reflection sounds are produced for one every sound data;
- at least one subsequent reverberation sound producing means for delaying the sound data and controlling amplitude level of the sound data to produce subsequent reverberation sounds, the delaying by said at least one subsequent reverberation sound producing means being different from the delaying by said at least one early reflection sound producing means, and control of the amplitude level by said at least one subsequent reverberation sound producing means being different from control of the amplitude level by said at least one early reflection sound producing means;
- at least one subsequent reverberation sound control means for controlling said at least one subsequent reverberation sound producing means such that plural subsequent reverberation sounds are produced for every one sound data;
- and
- at least one envelope control means for controlling envelopes of the early reflection sounds and the subsequent reverberation sounds, and respectively changing control of the envelopes depending upon a number of times of reverberation.
3 more elements
Dependencies are inferred from the claim text.