Tracing the evolution of the technology How does the use of PCM in different applications (e.g., audio, video, telemetry) lead to different design considerations and trade-offs?
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what is pcm Informational
- Increased quantization noise and distortion What is the role of digital filters in PCM systems?
- Broadcasting, professional audio production, uncompressed storage
- Sub-band coding, transform coding (basis of many audio codecs)
- Potential for new applications and improvements What are the fundamental differences between PCM and other pulse modulation techniques like pulse-width modulation (PWM) or pulse-amplitude modulation (PAM)?
- Ensuring accurate time alignment of the different channels
- Mitigation through equalization or using shorter hold times What are the different types of pulse shapes that can be used in PCM transmission and their impact on bandwidth and inter-symbol interference?
- Transducers to convert the signal to an electrical form, then apply PCM
- Protecting sensitive information during storage and transmission What are some common encryption algorithms that can be applied to PCM data?
- Common sampling rates (e.g., 44.1 kHz, 48 kHz, 96 kHz) How does sampling rate affect the bandwidth of the digitized signal?
- Achieving compression without sacrificing quality What are the trade-offs between lossless compression ratio and decoding complexity for PCM audio?
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