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| 型号： | TAS3001CPWRG4 |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 音频控制 |
| 英文描述： | 2 CHANNEL(S), TONE CONTROL CIRCUIT, PDSO28 |
| 封装： | GREEN, PLASTIC, TSSOP-28 |
| 文件页数： | 28/55页 |
| 文件大小： | 432K |
| 代理商： | TAS3001CPWRG4 |
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83
Figure 83. Typical Small Loudspeaker Response
In addition to equalization of the frequency response, the TAS3001 can be used to notch out specific frequencies that
excite mechanical resonances in the speaker. The removal of mechanical resonances improves the temporal
response of the loudspeaker, so that it more accurately reproduces a recorded signal. For small and ported
loudspeakers, a high-pass filter eliminates signal energy that is lower than the speaker can reproduce. This filtering
improves the loudspeaker power handling and intelligibility by eliminating large cone excursions produced by signals
that are below the loudspeaker resonant frequency.
The kinds of corrections being discussed here begin with a thorough understanding of the inherent operation of the
particular loudspeaker. This information can best be obtained by means of a measurement such as that shown in
Figure 83. The measurement information allows the equalization designer to find the resonances and other
problems associated with the speaker and to correct them.
8.3
Sound-Based Speaker Correction
While a high-quality speaker measurement can be extremely valuable to the equalization designer, many good
equalization designers also rely upon their own perception of the sound from the speaker. Based upon what they
measure and hear, designers are able to design filters to achieve a specific frequency response and desired sonic
character. Digital filters can be used to provide these corrections and shape the produced sound.
8.4
Loudspeaker Equalization Example
An example of loudspeaker equalization follows. In Figure 83, a loudspeaker has the frequency response shown.
In Figure 85 the designer specifies the desired response that is the center of the three new lines. The lines above
and below the center line are the + and tolerances. The tolerances can be adjusted.
相关PDF资料 |
PDF描述 |
|---|---|
| TAS3001CPWR | 2 CHANNEL(S), TONE CONTROL CIRCUIT, PDSO28 |
| TAS3001CPWG4 | 2 CHANNEL(S), TONE CONTROL CIRCUIT, PDSO28 |
| TAS3001CPW | 2 CHANNEL(S), TONE CONTROL CIRCUIT, PDSO28 |
| TAS3002 | SPECIALTY CONSUMER CIRCUIT, PQFP48 |
| TAS3004PFB | SPECIALTY CONSUMER CIRCUIT, PQFP48 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| 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 制造商全称:Texas Instruments 功能描述:Digital Audio Processor With Codec |
| TAS3002PFB | 功能描述:音频 DSP Digital Audio Processor w/ Codec RoHS:否 制造商:Texas Instruments 工作电源电压: 电源电流: 工作温度范围: 安装风格: 封装 / 箱体: 封装:Tube |
| TAS3002PFBG4 | 功能描述:音频 DSP Digital Audio Processor w/ Codec RoHS:否 制造商:Texas Instruments 工作电源电压: 电源电流: 工作温度范围: 安装风格: 封装 / 箱体: 封装:Tube |
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