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thermionic valves radio | |||
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audio frequency | |||
audio (A file containing digitized audio, such as voice or music) | |||
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audio (Relating to frequencies within the range of perception by the human ear - from about 15 to 20,000 hertz (cycles per second)) |
audio : 178 phrases in 14 subjects |
Communications | 38 |
Economics | 1 |
Education | 1 |
Electronics | 15 |
Health care | 2 |
Industry | 1 |
Information technology | 20 |
Medical | 1 |
Microsoft | 54 |
Natural sciences | 2 |
Patents | 35 |
Sound recording | 6 |
Transport | 1 |
Video recording | 1 |