IUB PHYS-P 105 - Amplifiers and Number systems (2 pages)

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Amplifiers and Number systems



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Amplifiers and Number systems

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amplifiers and number systems


Lecture number:
35
Pages:
2
Type:
Lecture Note
School:
Indiana University, Bloomington
Course:
Phys-P 105 - Basic Physics of Sound
Edition:
1

Unformatted text preview:

1nd Edition PHYS 105 Lecture 35 Outline of Last Lecture I Electrical Circuits Outline of Current Lecture II Amplifiers III Analog signals and dynamic range IV Number systems and digitization Current Lecture I Amplifiers Boost the output to a normal detectable level Need power amplifier to boost the power for loudspeaker system AM FM tuner o AM wave May be become small at certain times it is susceptible to noise Limited fidelity and no possibility of stereo sound o FM wave Amplitude remains constant and less susceptible to noise Larger bandwidth and offers stereo channel sound Receiver station is in direct line of sight II Analog signals and dynamic range Sound waves in air electric signals in electronic circuit and our neuron pulses Easily amplified filtered and reproduced by electronic devices Analog signal is susceptible to noise and thus has relatively small dynamic range DR 20log V V III Number systems and digitization Unit of 1 or 0 is called 1 bit 2 bit system represents 00 01 10 and 11 8 bit system has 256 combinations First binary digit is called the most significant bit Last binary digit is called the least significant bit 8 bit unit is called 1 byte 32 bit unit is called 4 bytes These notes represent a detailed interpretation of the professor s lecture GradeBuddy is best used as a supplement to your own notes not as a substitute



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