參數(shù)資料
型號： TAS5504PAGG4
廠商： TEXAS INSTRUMENTS INC
元件分類： 消費(fèi)家電
英文描述： SPECIALTY CONSUMER CIRCUIT, PQFP64
封裝： GREEN, PLASTIC, TQFP-64
文件頁數(shù)： 29/96頁
文件大?。?/td> 1216K
代理商： TAS5504PAGG4
Introduction
27
SLES123 October 2004
TAS5504
1.10.2.3 Slope Parameter Computation
In developing the equations used to determine the subaddress of the input value required to realize a given
compression or expansion within a given region of the DRC, the following convention is adopted.
DRC Transfer = Input Increase : Output Increase
If the DRC realizes an output increase of n dB for every dB increase in the rms value of the audio into the DRC,
a 1:n expansion is being performed. If the DRC realizes a 1 dB increase in output level for every n dB increase
in the rms value of the audio into the DRC, a n:1 compression is being performed.
For 1:n expansion, the slope k can be found by:
k = n 1
For n:1 compression, the slope k can be found by: k + 1n–1
In both expansion (1:n) and compression (n:1), n is implied to be greater than 1. Thus, for expansion:
k = n 1 means k > 0 for n > 1. Likewise, for compression, k + 1n–1 means 1 < k < 0 for n > 1. Thus, it appears
that k must always lie in the range k > 1.
The DRC imposes no such restriction and k can be programmed to values as negative as 15.999. To
determine what results when such values of k are entered, it is first helpful to note that the compression and
expansion equations for k are actually the same equation. For example, a 1:2 expansion is also a 0.5:1
compression.
0.5 Compression k + 1
0.5
–1 + 1
1:2Expansion k + 2–1 + 1
As can be seen, the same value for k is obtained either way. The ability to choose values of k less than 1 allows
the DRC to implement negative slope transfer curves within a given region. Negative slope transfer curves
are usually not associated with compression and expansion operations, but the definition of these operations
can be expanded to include negative slope transfer functions. For example, if k = 4
Compression Equation : k +*4 + 1n *1 n + –
1
3 *
0.3333 : 1 compression
Expansion Equation : k +*4 + n–1 n + –3 1: *3 expansion
With k = 4, the output decreases 3 dB for every 1 dB increase in the rms value of the audio into the DRC.
As the input increases in volume, the output decreases in volume.
1.11 Output Mixer
The TAS5504 provides an 4x2 output mixer for channels 1 and 2. For channels 3 and 4, the TAS5504 provides
an 4x3 output mixer. These mixers allow each output to be any ratio of any two (three) signal processed
channels. The control parameters for the output crossbar mixer are programmable via the I2C interface.
相關(guān)PDF資料
PDF描述
TAS5508BPAGG4 SPECIALTY CONSUMER CIRCUIT, PQFP64
TAS5508BPAGRG4 SPECIALTY CONSUMER CIRCUIT, PQFP64
TAS5508BPAGR SPECIALTY CONSUMER CIRCUIT, PQFP64
TAS5508BPAG SPECIALTY CONSUMER CIRCUIT, PQFP64
TAS5508PAG SPECIALTY CONSUMER CIRCUIT, PQFP64
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
TAS5504PAGR 功能描述:音頻 DSP 4 Ch Digital Audio PWM Processor 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(fēng)格: 封裝 / 箱體: 封裝:Tube
TAS5504PAGRG4 功能描述:音頻 DSP 4 Ch Digital Audio PWM Processor 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(fēng)格: 封裝 / 箱體: 封裝:Tube
TAS5508 制造商:TI 制造商全稱:Texas Instruments 功能描述:8 Channel Digital Audio PWM Processor
TAS5508-5121K8EVM 功能描述:音頻 IC 開發(fā)工具 TAS5508-TAS5121K8 Eval Mod RoHS:否 制造商:Texas Instruments 產(chǎn)品:Evaluation Kits 類型:Audio Amplifiers 工具用于評估:TAS5614L 工作電源電壓:12 V to 38 V
TAS5508-5122C6EVM 功能描述:音頻 IC 開發(fā)工具 TAS5508-5122C6 Eval Mod RoHS:否 制造商:Texas Instruments 產(chǎn)品:Evaluation Kits 類型:Audio Amplifiers 工具用于評估:TAS5614L 工作電源電壓:12 V to 38 V
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。

采購需求

(若只采購一條型號，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進(jìn)入我的后臺，查看報價

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進(jìn)入我的后臺，查看報價

*型號 *數(shù)量 廠商 批號 封裝
添加更多采購

我的聯(lián)系方式

*
*
*