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| W58-XC4C12A-20资料 | |
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W58-XC4C12A-20 PDF Download |
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File Size : 116 KB
Manufacturer:TYCO Description: An Adaptive Differential PCM (ADPCM) transcoder is used to reduce the data rate required to transmit a PCM encoded voice signal while maintaining the voice fidelity and intelli- gibility of the PCM signal. The transcoder is used on 64 kbps data streams which represent either voice or voice band data signals that have been digitized by a codec (e.g., MC145557). The transcoder uses a filter to attempt to predict the next PCM input value based on previous PCM input values. The error between the predicted and the true PCM input value is the information that is sent to the other end of the line. Hence the word differ- ential, since the ADPCM data stream is the difference be- tween the true PCM input value and the predicted value. The term adaptive applies to the filter that is performing the pre- diction. It is adaptive in that its transfer function changes based on the PCM input data. That is, it adapts to the statis- tics of the signals presented to it. |
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| 1PCS | 100PCS | 1K | 10K | ||
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型 号：W58-XC4C12A-20 厂 家：TYCO 封 装： 批 号：07+ 数 量：3886 说 明：原装正品 |
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运 费：所有运费均有我司承担 所在地：深圳 新旧程度： |
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| 联系人：申小姐 |
| 电 话：0755-83330991,0755-83047629 |
| 手 机：15811820920 |
| QQ：2355514181 |
| MSN：chipstech-int@hotmail.com |
| 传 真：0755-61658118 |
| EMail：sales@chipstech-int.com |
| 公司地址： 深圳市福田区中航路鼎城国际1017 |
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1. 所有我司提供的货物，均为原厂原装正品！ 2. 我们的报价是不含税价格。含税需要增加相应的税点。
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