參數(shù)資料
型號： MSM9805-xxx
廠商： OKI SEMICONDUCTOR CO., LTD.
英文描述： Voice Synthesis IC with Built-in Mask ROM
中文描述： 語音合成集成電路內(nèi)置掩模ROM
文件頁數(shù)： 42/52頁
文件大?。?/td> 349K
代理商： MSM9805-XXX
42/51
MSM9802/03/05-xxx
Semiconductor
7. Low-Pass Filter
In this IC, all voice outputs are through the built-in low-pass filter (LPF). Figure 7.1 and Table
7.2 show the LPF frequency characteristics and LPF cutoff frequency respectively.
Only the voice output through LPF is enabled in this IC.
0
–20
–40
–50
–60
–70
[dB]
100
1k
10k
–10
10
–30
–80
20
[Hz]
10
Figure. 7.1 LPF Frequency Characteristics (f
SAM
=8 kHz)
Table 7.2 LPF Cutoff Frequency
Sampling Frequency (kHz)
(f
SAM
)
4.0
5.3
6.4
8.0
10.6
12.8
16.0
Cutoff Frequency (kHz)
(f
CUT
)
1.2
1.6
2.0
2.5
3.2
4.0
5.0
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