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參數資料
| 型號： | W561S25 |
| 廠商： | WINBOND ELECTRONICS CORP |
| 元件分類： | 音頻合成 |
| 英文描述： | 4-tone PCM Melody+ADPCM/PCM Voice Synthesizer(4音PCM音樂、ADPCM/PCM話音合成器) |
| 中文描述： | 25 SEC, SPEECH SYNTHESIZER |
| 文件頁數： | 30/62頁 |
| 文件大?。?/td> | 848K |
| 代理商： | W561S25 |
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W561XXX DESIGN GUIDE
- 30 -
Advanced -- Low Frequency Response
It defines the amount of low frequency component contained in the 'Loop' section. The default
value is 1.5, and this setting is fine for most timbres. For those timbres that entails tremolo
effects, users can use smaller loop size or alternatively decrease this Low Frequency
Response parameter to remove the tremolo effect.
Advanced -- Transition Length of Attack Section and Looped Section
In the made-up timbre sample, the waveform of the Attack (Head) section is gradually
transferred to the Loop section. The default transition length of attack section and looped
section is exactly the length of the attack section ( timbre size - loop size - 8 ). However, for
some timbres, a phase cancellation effect might occur in the transition and cause an
unintended null on the waveform. To reduce this effect, users can decrease the transition
length of attack section and looped section.
( 0.5 ~ 1.5 )
Score Transcription
hardware. The hardware limitations are:
(I) W561xxx provides 4 independent channels so that less than 4 notes can be played at the
same time.
(II) W561xxx provides 16K bytes of timbre memory. It means 16 different 1K-byte-timbres is the
maximum number of timbres that can be stored and synthesized. The quantity of the midi tracks
is not limited, but the total number of the timbres that the tracks correspond to must be less than
16.
(III) The Midi Converter regards that each timbre is recorded as a G3 note, so the synthesized
note range is from G1 to G5. Any note on the tracks that is not between G1 and G5 will be
ignored.
If an input midi file doesn't satisfy the hardware limitations (e.g. too many notes at the
same time), the Midi Converter still generates a *.tm file by its internal judgment rules. However,
this tm file doesn't guarantee that the synthesized music is what the user wants. To make sure
the quality of the synthesized music, users are recommended to modify the midi file and make it
satisfy the hardware limitation before converting.
There are 5 steps in modifying a midi file.
(I) Note timing re-quantization: In some midi files, especially for those generated by hand-
playing, the start-time and end-time of notes are very rambling. Even if the start-time and end-
time of the notes on the score should be the same, the timing cannot be controlled so precisely
in a hand-playing midi file. These timing gaps will cause the Midi Converter to suppose that the
notes are played in different time. Therefore, the converted result might be different from the
midi file. The Note timing re-quantization processing can align the timing of notes that occur
within an unit scale, where the unit scale is defined by the two parameters, Note Resolution and
Rest Resolution.
(II) Selecting important tracks and notes: Midi files are usually composed of more than 4 music
tracks. Some tracks are for subject and some for accompaniment. For the hardware limitation (I),
users are recommended to delete the unimportant tracks first. Secondly, users should delete
some unimportant notes in all the reserved tracks so that less than 4 notes are played at the
same time.
(III) Transpose the notes of tracks to the range of G1 and G5 for hardware limitation (III).
(IV) Assign the timbre of each tracks: The timbre of the track can be assigned by selecting a
timbre index, provided that there is a timbre corresponding to the same index in the timbre
library file. Note that different tracks can use the same timbre index.
(V) Convert the modified midi file to tm format by the Midi Converter utility. In the Midi Converter
utility, users can choose whether the reveration effect is added or not. By experience, if there are
The Midi Converter converts midi file to W561xxx format under the limitations of
相關PDF資料 |
PDF描述 |
|---|---|
| W561S30 | 4-tone PCM Melody+ADPCM/PCM Voice Synthesizer(4音PCM音樂、ADPCM/PCM話音合成器) |
| W561S40 | 4-tone PCM Melody+ADPCM/PCM Voice Synthesizer(4音PCM音樂、ADPCM/PCM話音合成器) |
| W561S50 | 4-tone PCM Melody+ADPCM/PCM Voice Synthesizer(4音PCM音樂、ADPCM/PCM話音合成器) |
| W561S60 | 4-tone PCM Melody+ADPCM/PCM Voice Synthesizer(4音PCM音樂、ADPCM/PCM話音合成器) |
| W561S80 | 4-tone PCM Melody+ADPCM/PCM Voice Synthesizer(4音PCM音樂、ADPCM/PCM話音合成器) |
相關代理商/技術參數 |
參數描述 |
|---|---|
| W561S30 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述: |
| W561S40 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:BandDirectorTM Family |
| W561S50 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:BandDirectorTM Family |
| W561S60 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:BandDirectorTM Family |
| W561S80 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:BandDirectorTM Family |
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