摘要:
Non-looped continuous sound made up of random sequencing of digital sound segments is generated by taking several short segments of an otherwise continuous sound and forming independent records of those short segments. The stored segments are re-assembled into a sound sequence of arbitrary length based on selecting the next sound segment according to some statistical algorithm. The selected algorithm may be simply a random or pseudo-random selection, or it may provide a probability weighting to emphasize some sound records over others, or some combination of factors also affected by external stimuli such as light, heat or operator input. Apparatus for generating random sequenced digital sound are disclosed. Another aspect of the invention is logical sequence sound in which the selection of sound segments proceeds according to a logical sequence which is programmable.
摘要:
Non-looped continuous sound made up of random sequencing of digital sound segments is generated by taking several short segments of an otherwise continuous sound and forming independent records of those short segments. The stored segments are re-assembled into a sound sequence of arbitrary length based on selecting the next sound segment according to some statistical algorithm. The selected algorithm may be simply a random or pseudo-random selection, or it may provide a probability weighting to emphasize some sound records over others, or some combination of factors also affected by external stimuli such as light, heat or operator input. The selection of sound segments proceeds according to a logical sequence which is programmable. Sounds are organized into groups of similar sounds which may be accessed according to subsects. Groups may include beginning (head), middle and end (tail) sound segments.
摘要:
Several short segments of an otherwise continuous sound are recorded and stored in a digital memory. The stored segments are concatenated together to form a sound sequence of arbitrary length, based on selecting the next sound segment according to some statistical algorithm. The selected algorithm may be simply a random or pseudo-random selection, or it may provide a probability weighting to emphasize some sound records over others, or some combination of factors also affected by external stimuli such as light, heat or operator input. Apparatus for generating random sequenced digital sound are disclosed. Another aspect of the invention is logical sequence sound in which the selection of sound segments proceeds according to a logical sequence which is programmable.
摘要:
A model railroad cattle car sound effects system includes a speech synthesis circuit (FIG. 6) for "playing" selected cow voices stored as digital data in an EPROM (160). In a random mode of operation, a state generator (30) provides a pseudo-random count that is used to select among four different calm cow voices, one of which is silence. The resulting audio output is perceived as random contented cow sounds. A pendulum motion detector (FIG. 8) provides an indication of lateral motion of the system. An up/down motion counter (40) maintains a motion count reflecting the level of excitation of the system (and the cows). The motion counter increments responsive to motion, and decrements gradually in the absence of detected motion. A motion count of at least four invokes a triggered mode of operation, in which the counter output is used to select among four different excited cow voices. The resulting audio output imitates increasingly agitated cows as the motion count further increases.