Audio Engineering

502 Chapter 16 some 3000 °, which would be clearly audible. (In the recording equipment it is possible to employ steep-cut fi lt ...

Compact Disc 503 is a specifi c requirement of the digital encoding/decoding process, for the reasons already considered. It is ...

504 Chapter 16 blemishes, such as dust, scratches, or thumb prints on the surface of the disc, and it is necessary to include ad ...

Compact Disc 505 fl at glass plate, rather than a spiral groove in a metal one, and that the width of the spiral track is very m ...

506 Chapter 16 Binary encoding accuracy 16-bit (65,536 steps) Disc diameter 120 mm Disc thickness 1.2 mm Center hole diameter 15 ...

Compact Disc 507 refl ecting layer is deformed in the recording process to produce a sequence of oblong humps along the spiral p ...

508 Chapter 16 It is necessary to control the position of the lens, in relation both to the disc surface and to the recorded spi ...

LPF LPF RF detection MotorHeadpositionFocus Mute ROM 14–8decode Shiftregister RAM CIRC RAM Clock regenerator Digital oversamplin ...

510 Chapter 16 An accurate crystal-controlled clock regeneration circuit then causes the signal data blocks to be withdrawn in c ...

Compact Disc 511 spot focused on the disc and that use errors found in the bit repetition frequency, derived from the recovered ...

512 Chapter 16 LSB, both the initial and the long-term precision of the electronic components used to defi ne the size of the MS ...

Compact Disc 513 Since the input “ 16-bit ” encoded signal is divided into two “ 8-bit ” words in the CD replay process, represe ...

514 Chapter 16 However, this comb fi lter type arrangement is not very conveniently suited to a system, such as the replay path ...

Compact Disc 515 frequently than would be permitted by the notional “ cut-off ” frequency of the fi lter will all have a coded e ...

516 Chapter 16 If the FIR clock frequency is increased to 176.4 kHz, the action of the shift registers will be to generate three ...

Compact Disc 517 smaller, as shown in Figure 16.15. This reduces the quantization noise and also increases the effective resolut ...

518 Chapter 16 would be attributed to level 12 and that 40% would be attributed to level 13 so that, on averaging, the fi nal an ...

Compact Disc 519 employ “ noise shaping, ” a procedure in which, as shown in Figure 16.16 , the noise components are largely shi ...

520 Chapter 16 process was applied—an option that would not incur signifi cant problems with accuracy of quantization—this would ...

Compact Disc 521 words. Correcting random errors is easier so the procedure used in the Reed–Solomon code endeavors to break dow ...