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so the video programming may be calibrated as well. It is sometimes played in sequence between a 100 Hz and 10 kHz tone to ensure an accurate response from the equipment at varying audio frequencies. This is also the
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corresponding to a known frequency, and produced at a stable
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For standardized test signal levels and frequencies, see
63:is at a comfortable volume for the audience. In
16:Pure audio tone at stable frequency and volume
128:with a standardized level generally used for
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31:(volume), usually by specialized equipment.
67:, this tone is usually accompanied by a
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80:obscene or sensitive audio content.
145:United States Department of Defense
39:The most common reference tone in
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92:used by musicians emit a tone of
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132:of single links and of links in
190:General Services Administration
155:for other Government agencies.
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246:Telecommunications standards
217:Downloadable reference tones
149:Code of Federal Regulations
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185:Federal Standard 1037C
179:public domain material
221:The Freesound Project
198: (in support of
112:In telecommunications
96:, corresponding to a
29:sound pressure level
147:(DOD) use, and the
122:standard test tone
236:Audio engineering
118:telecommunication
90:electronic tuners
76:commonly used to
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241:Music production
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74:"bleep" tone
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200:MIL-STD-188
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100:of A above
230:Categories
159:References
151:Title 47,
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69:test card
25:pure tone
102:Middle C
84:In music
35:In media
219:, from
153:part 68
134:tandem
106:tuning
78:censor
181:from
124:is a
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94:440Hz
88:Many
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19:A
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