摘要:
Signal processing section (100) of a terminal converts acquired audio signals of a plurality of channels into frequency spectra set, calculates sound image positions corresponding to individual frequency components, and displays, on a display screen, the calculated sound image positions results by use of a coordinate system having coordinate axes of the frequency components and sound image positions. User-designated partial region of the coordinate system is set as a designated region and an amplitude-level adjusting amount is set for the designated region, so that the signal processing section adjusts amplitude levels of frequency components included in the frequency spectra and in the designated region, converts the adjusted frequency components into audio signals and outputs the converted audio signals.
摘要:
In a sound processing apparatus, a likelihood calculation unit calculates an in-region coefficient and an out-of-region coefficient indicating likelihood of generation of each frequency component of a sound signal inside and outside a target localization range, respectively, according to localization of each frequency component. A reverberation analysis unit calculates a reverberation index value according to the ratio of a reverberation component for each frequency component. A coefficient setting unit generates a process coefficient for suppressing or emphasizing a reverberation component generated inside or outside the target localization range, for each frequency component of the sound signal, on the basis of the in-region coefficient, the out-of-region coefficient and the reverberation index value. A signal processing unit applies the process coefficient of each frequency component to each frequency component of the sound signal.
摘要:
Frequency detection section (62) identifies candidate frequencies (Fc(1) - Fc(N)) per unit segment (Tu) of an audio signal (x). First processing section (71) identifies an estimated train (RA) that is a time series of candidate frequencies (Fc(n)), each selected for a different one of the segments, arranged over a plurality of the unit segments and that has a high likelihood of corresponding to a time series of fundamental frequencies (Ftar) of a target component Second processing section (72) identifies a state train (RB) of states, each indicative of one of sound-generating and non-sound-generating states of the target component in a different one of the segments, arranged over the unit segments. Information generation section (68) generates frequency information (DF) per unit segment (Tu), the frequency information generated for each unit segment corresponding to the sound-generating state designating, as a fundamental frequency (Ftar) of the target component, a candidate frequency (Fc(n)) corresponding to the unit segment in the estimated train (RA), the frequency information generated for each unit segment corresponding to the non-sound-generating state being indicative of no sound generation.
摘要:
In a musical sound waveform synthesizer apparatus, a performance event information receiver receives performance event information representing musical performance events which successively occur as a musical performance progresses. A musical sound synthesizer synthesizes a waveform of a musical sound corresponding to each musical performance event based on the performance event information. An overlap detector detects whether or not a first musical sound and a second musical sound overlap with each other based on the performance information. A sound length meter obtains a sound length of the first musical sound based on the received performance event information. When the first musical sound and the second musical sound overlap with each other, the musical sound synthesizer instantly terminates synthesizing of a waveform of the first musical sound and starts synthesizing of a waveform of the second musical sound if the sound length of the first musical sound does not exceed a predetermined sound length.
摘要:
Determination is made, in accordance with acquired performance information, as to whether a crossfade characteristic should be changed or not, and a crossfade characteristic of crossfade synthesis having already been started at the time of the acquisition of the performance information was acquired are automatically changed in accordance with a result of the determination. Because the crossfade characteristic is automatically changed during the course of the crossfade synthesis, the time length of the crossfade synthesis can be expanded or contracted as compared to the time length that had been preciously set at the beginning of the crossfade synthesis, and thus, the time position of a succeeding one of rendition style modules to be time-serially combined in accordance with the acquired performance information can be allotted to a time position displaced by an amount corresponding to the expanded or contracted time.
摘要:
A plurality of blocks of waveform data are stored in a memory, which also stores, for each of the blocks, synchronizing information representative of a plurality of cycle synchronizing points that are indicative of periodic specific phase positions where the block of waveform data should be synchronized in phase with another block of waveform data. Two blocks of waveform data (e.g., harmonic and nonharmonic components) are read out from the memory, along with the synchronizing information. On the basis of the synchronizing information, the readout of two blocks of waveform data is controlled using the synchronizing information. There is stored, for each of the blocks, at least one piece of synchronizing position information indicative of a specific position where the block should be synchronized with another block, and the readout of the individual blocks of waveform data is controlled so that the blocks are synchronized with each other using the synchronizing position information.