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No Strings Attached
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(Complete Item Description)
- Abstract:
The telephone company's "Caller ID" service provides the calling party's directory information as well as the time and date of the call as an FSK (frequency shift keying) signal between the first and second rings of a telephone call. In this project, develop a complete Caller ID decoder that analyzes an audio recording of the FSK signal to extract the directory and date information for display.
- Subject:
- Science and Technology
- Grade Level:
- Post-secondary
- Collection:
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Connexions
No Strings Attached
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(Complete Item Description)
- Abstract:
Texting and instant messaging are familiar and popular communication techniques. Text messages composed of ASCII characters, with each character composed of eight bits, ultimately form a stream of bits transmitted from the source to the receiver. Normally the text message moves through a complex data network, and the user only sees the endpoints of the system. In this project, however, you will be able to follow the text message on its complete journey through a binary ASK transmitter, a speaker-air-microphone (SAM) channel, and a binary ASK receiver.
- Subject:
- Science and Technology
- Grade Level:
- Post-secondary
- Collection:
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Connexions
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