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脉冲编码调制
It may also be an analog signal such as a phone call or a video signal, digitized into a bit-stream for example using pulse-code modulation (PCM) or more advanced source coding (analog-to-digital conversion and data compression) schemes.
Only at the MSC is this re-coded into an "analogue" signal (although actually this will almost certainly mean sound is encoded digitally as a pulse-code modulation (PCM) signal in a 64-kbit/s timeslot, known as a DS0 in America).
PCM (Pulse-Code Modulation) streams are used on occasions where high-quality audio is the primary objective, such as on music DVDs, though given their uncompressed nature and inevitably large file sizes, are not often used for film soundtracks.
The delta modulation is undergoing development as same as the pulse-code modulation in digital communication systems.
在数字通信系统中,增量调制将与脉码调制同样得到发展。
The Symphony FSA95601 is a high-performance, six-channel Class-D digital amplifier controller that can process up to six channels of Pulse-Code Modulation (PCM) digital audio input data to produce the corresponding PWM outputs to drive external power stages.
Symphony FSA95601 是高性能六通道 D 类放大控制器,可处理多达六个通道的脉宽调制 (PCM) 数字音频输入数据,并产生 PWM 输出以驱动外部功率级。
More sophisticated radio control systems are now often based on pulse-code modulation, which is more complex but offers greater flexibility and reliability.
This includes pulse-code modulation (PCM) encoded audio with sampling rates greater than 44,100 Hz and with bit-depths greater than 16, or their equivalents using other encoding techniques such as pulse-density modulation (PDM).
The standard algorithm was first proposed by Stuart Lloyd in 1957 as a technique for pulse-code modulation, though it wasn't published outside of Bell Labs until 1982.
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