Download Principles of Digital Audio (6th Edition) by Ken Pohlmann PDF

By Ken Pohlmann

The definitive advisor to electronic engineering—fully updated

Gain an intensive figuring out of electronic audio instruments, suggestions, and practices from this thoroughly revised and multiplied source. Written through pioneer and Audio Engineering Society Fellow Ken C. Pohlmann, Principles of electronic Audio, Sixth Edition, describes the applied sciences in the back of today's audio gear in a transparent, sensible variety.

Covering simple conception to the newest technological developments, the ebook explains how you can follow electronic conversion, processing, compression, garage, streaming, and transmission innovations. New chapters on Blu-ray, speech coding, and occasional bit-rate coding also are integrated during this bestselling guide.

Learn approximately discrete time sampling, quantization, and sign processing
• research info of CD, DVD, and Blu-ray avid gamers and discs
• Encode and decode AAC, MP3, MP4, Dolby electronic, and different files
• arrange content material for distribution through the web and electronic radio and television
• examine the serious adjustments among song coding and speech coding
• layout low bit-rate formats to optimize reminiscence capability whereas protecting fidelity
• increase methodologies to guage the sound caliber of tune and speech files
• learn audio transmission through HDMI, VoIP, wireless, and Bluetooth
• deal with electronic rights administration, fingerprinting, and watermarking
• know the way one-bit conversion and high-order noise shaping work

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Additional resources for Principles of Digital Audio (6th Edition)

Sample text

He used a pn junction gate to eliminate the effect of the surface states. The main advantage of such transistors compared to MOS transistors is their low 1 /f noise. The reason for this is that in an MOS transistor the current flows in a very thin surface layer and is therefore very sensitive to temporary surface charges. In a JFET the current flows in a channel which may be so far away from the surface that its effect is negligible. Such transistors are therefore used primarily in low noise applications.

9, give different results depending on how the voltage VF is selected. 11 ) vr ;;;;. 12, we can see that when the input voltage is low the output voltage is only VF - vr. Why is this? Assume that a small current flows through transistor T 1 and accordingly also in transistor T 2 • The gate-source voltage of transistor T 2 is then very close to the threshold voltage vr. This means that the output voltage Vout is VF - vr. Consequently by varying the voltage VF the output voltage may be varied. However, if the voltage VF is continuously increased the output voltage finally reaches the supply voltage, vc.

Since in an MOS transistor the drain current decreases or increases only slightly with temperature, thermal runaway as in the bipolar transistor does not occur. For the same reason, and because the MOS transistor does not draw appreciable input current, temperature compensation is simpler than for the bipolar transistor. 30 J 0 ,mA 100 80 60 2SJV I 60 40 20 I4V 40 y 20 '/ I 2V I ov 8V ~ (b) 6 12 ·= ~s= 6 V 18 24 30 -.. / v I ___. 18V 7l 1---- - 12 / t.... J~ - 2ov 1-" I 6V 14V 40 12V IOV 20 " .

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