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參數(shù)資料
| 型號： | TAS3001CPWR |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 音頻控制 |
| 英文描述： | 2 CHANNEL(S), TONE CONTROL CIRCUIT, PDSO28 |
| 封裝： | GREEN, PLASTIC, TSSOP-28 |
| 文件頁數(shù)： | 3/55頁 |
| 文件大?。?/td> | 432K |
| 代理商： | TAS3001CPWR |
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16
1.8
Bass and Treble Controls
The TAS3001 has bass and treble controls that can be adjusted dynamically. These controls can be adjusted
throughout their entire range of 18 dB to –18 dB without experiencing any pops, clicks, or other audible artifacts. This
permits the user to have a listening experience much like what is experienced when adjusting high-quality analog
controls.
Figure 17 shows the response for the bass and treble filters plotted at 3-dB intervals for 44.1-kHz sample-rate data.
20
15
10
5
0
5
10
15
20
f Frequency Hz
Attenuation
dB
ATTENUATION
vs
FREQUENCY
100
1k
10k
Figure 17. Bass and Treble Filters
1.9
Soft Volume and True Soft Mute
The TAS3001 contains a Texas Instruments proprietary soft volume update. This allows a smooth and
pleasant-sounding change from one volume level to another over the entire range of volume (18 dB to mute). The
volume is adjustable by downloading a 4.20 gain coefficient through the I2C interface.
Mute is implemented by loading all zeros in the volume control register. This causes the volume to ramp down over
2048 samples to a final output of zero (
∞ dB).
1.10 Reliability and Flexibility of Digital Filtering
Digital filtering provides outstanding consistency, reliability, and flexibility. Once a digital filter is designed and tested
in the system, it continues to perform in the same manner without change. Because digital filters are computed, their
performance is exceedingly consistent and does not change due to variations in component matching, tolerances,
environmental conditions, aging, or the effects of moisture and dust. Analog filters, however, are affected by all of
these. The performance of analog filters can be improved, in part, by using high-quality precision components but
this comes with a higher comparable cost.
One of the greatest strengths of a digital filter is its flexibility. Each filter is completely specified by five 24-bit
coefficients. By modifying the value of one or more of the filter coefficients, both the filter value and filter type are
changed. In a system, these modifications produce different crossover curves, different equalization curves, different
sound effects (by changing the relative phase of the left and right loudspeakers) or different user graphical
equalization settings.
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| TAS3001CPWG4 | 2 CHANNEL(S), TONE CONTROL CIRCUIT, PDSO28 |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TAS3001CPWRG4 | 功能描述:音頻 DSP Stero Audio Digital Equalizer RoHS:否 制造商:Texas Instruments 工作電源電壓: 電源電流: 工作溫度范圍: 安裝風格: 封裝 / 箱體: 封裝:Tube |
| TAS3001EVM | 制造商:Texas Instruments 功能描述:TAS3001 EVALUATION BOARD - Bulk |
| TAS3001IN WAF | 制造商:Texas Instruments 功能描述: |
| TAS3002 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:Digital Audio Processor With Codec |
| TAS3002PFB | 功能描述:音頻 DSP Digital Audio Processor w/ Codec RoHS:否 制造商:Texas Instruments 工作電源電壓: 電源電流: 工作溫度范圍: 安裝風格: 封裝 / 箱體: 封裝:Tube |
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