Musical tone generation apparatus utilizing pitch dependent timing delay

1995 ◽  
Vol 97 (2) ◽  
pp. 1367-1367
Author(s):  
Satoshi Sekine ◽  
Junichi Fujimori
Keyword(s):  
Musical Tone ◽  
Timing Delay ◽  
Tone Generation

Musical tone generation control apparatus

1991 ◽  
Vol 89 (5) ◽  
pp. 2485-2485
Author(s):  
Hideo Suzuki ◽  
Masao Sakama
Keyword(s):  
Musical Tone ◽  
Tone Generation ◽  
Control Apparatus ◽  
Generation Control

Optical two-tone generation and SSB modulation using electro-optic modulator with suppressing redundant spectrum components

2011 ◽  
Vol 3 (3) ◽  
pp. 295-300 ◽  
Author(s):  
Akira Enokihara ◽  
Tadashi Kawai ◽  
Tetsuya Kawanishi
Keyword(s):  
Input Power ◽  
Intensity Level ◽  
Optical Signals ◽  
Single Sideband ◽  
Electro Optic ◽  
Rf Signals ◽  
Frequency Components ◽  
Optical Single Sideband ◽  
Tone Generation ◽  
Electro Optic Modulator

Doubled frequency optical two-tone generation and optical single sideband (SSB) modulation by the dual-electrode-type electro-optic (EO) modulator with a single Mach–Zehnder (MZ) interferometer were considered. We theoretically showed that redundant spectrum components in the modulated optical signals, which are caused by the imbalance of light splitting ratio between the two arms of the interferometer, are significantly suppressed by controlling the input power ratio of RF modulation signals applied to each electrode. This effect was confirmed by the experiment, where an optical two-tone with the redundant components 49.8 dB lower than the primary two-tone components in intensity level was obtained. This method is also valid for suppression of undesired frequency components of RF signals that are generated at a photo detector from the optical two-tone waves propagated through a dispersive optical fiber.

SPEECH INTONATION PERCEPTION DEFICITS IN MUSICAL TONE DEAFNESS (CONGENITAL AMUSIA)

2008 ◽  
Vol 25 (4) ◽  
pp. 357-368 ◽  
Author(s):  
ANIRUDDH D. PATEL ◽  
MEREDITH WONG ◽  
JESSICA FOXTON ◽  
ALIETTE LOCHY ◽  
ISABELLE PERETZ
Keyword(s):  
Rate Of Change ◽  
Neural Mechanisms ◽  
French Canadian ◽  
Congenital Amusia ◽  
Music And Language ◽  
Pitch Direction ◽  
Melody Perception ◽  
Language And Music ◽  
Musical Tone ◽  
Important Evidence

TO WHAT EXTENT DO MUSIC and language share neural mechanisms for processing pitch patterns? Musical tone-deafness (amusia) provides important evidence on this question. Amusics have problems with musical melody perception, yet early work suggested that they had no problems with the perception of speech intonation (Ayotte, Peretz, & Hyde, 2002). However, here we show that about 30% of amusics from independent studies (British and French-Canadian) have difficulty discriminating a statement from a question on the basis of a final pitch fall or rise. This suggests that pitch direction perception deficits in amusia (known from previous psychophysical work) can extend to speech. For British amusics, the direction deficit is related to the rate of change of the final pitch glide in statements/ questions, with increased discrimination difficulty when rates are relatively slow. These findings suggest that amusia provides a useful window on the neural relations between melodic processing in language and music.

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