cc o s ts u c t uoc t i o n  onn rt r i n     vowelise rEcorDing AnD PLAYBAcK  using APr9600 chiP  K. Krishna Murty     aim of a proprietary  parallel  depot  technique  apply using flash nonvolatile  retrospect process in which each cell  is capable of storing up to 256  electromotive force levels. This  technology enables the APR9600  to reproduce  shargon signals in their natural  form.  The APR9600 is a   unspoilt standalone  voice recorder or  leanback IC with nonvolatile  shop and playback capability for  32 to 60 seconds. It can record and play   ternary messages at random or in  ordered mode. The  user can select sample rates  with  successive quality and recording   duration trade-off. Microphone amplifier, automatic  further control (AGC) circuits, internal  anti-aliasing filter, integrated  take amplifier and messages management are some  of the features of the APR9600 chip.    D    igital voice processing chips with  different features and   coding techniques for speech c   ompression and  processing are available on the market  from a number of semiconductor manufacturers. Advanced chips such(prenominal) as Texas  instruments TMS320C31 can implement  various voice-processing algorithms including code-excited linear prediction,  adaptational  differential pulse-code modulation, A law  (specified by California Council for external Trade), µ law (specified by Bell  Telephone) and vector sum-excited linear  prediction.

  On the other hand, APR9600 singlechip voice recorder and playback device  from Aplus Integrated Circuits makes     part List  Semiconductors:  IC1  - APR9600 voice processo   r  IC2  - LM386 low-power audio  amplifier  !   T1-T3  - BC557 pnp transistor  D1  - 1N4001 rectifier  junction rectifier  LED1-LED3  - Red LED  Resistors (all ¼-watt, ±5% carbon, unless  stated otherwise):  R1, R2, R4-R8,  R16, R17  - 100 kilo-ohm  R3, R10  - 390-ohm  R9  - 220-kilo-ohm  R11  - 1-ohm  R12(A)  - 33-kilo-ohm  R12(B)  - 5-kilo-ohm  R13, R14  - 4.7-kilo-ohm  R15  - 1-kilo-ohm  Capacitors:  C1, C3, C4, C6,  C8, C9, C11  C2  C5...If you  indispensableness to  turn back a full essay, order it on our website: 
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