• A voice frequency (VF) or voice band is the range of audio frequencies used for the transmission of speech. In telephony, the usable voice frequency band...
    4 KB (428 words) - 15:10, 3 September 2024
  • Thumbnail for G.711
    Pulse code modulation (PCM) of voice frequencies released for use in 1972. G.711 passes audio signals in the frequency band of 300–3400 Hz and samples...
    15 KB (1,816 words) - 19:17, 6 September 2024
  • Thumbnail for DTMF
    Dual-tone multi-frequency signaling (DTMF) is a telecommunication signaling system using the voice-frequency band over telephone lines between telephone...
    19 KB (2,146 words) - 02:11, 14 October 2024
  • Thumbnail for Human voice
    laughing, crying, screaming, shouting, humming or yelling. The human voice frequency is specifically a part of human sound production in which the vocal...
    24 KB (2,924 words) - 20:47, 6 September 2024
  • In telecommunications, a voice frequency primary patch bay (VF) is a patching facility that provides the first appearance of local-user VF circuits in...
    699 bytes (87 words) - 00:13, 16 September 2024
  • Thumbnail for Voice of Vietnam
    The Voice of Vietnam (VOV; Vietnamese: Đài Tiếng nói Việt Nam - TNVN) is the Vietnamese national radio broadcaster. Directly run by the government of...
    11 KB (1,357 words) - 14:27, 6 October 2024
  • Thumbnail for Frequency modulation
    In analog frequency modulation, such as radio broadcasting, of an audio signal representing voice or music, the instantaneous frequency deviation, i...
    31 KB (3,937 words) - 20:27, 7 July 2024
  • about two octaves below the frequency of modal voicing, and the airflow through the glottis is very slow. Although creaky voice may occur with very low pitch...
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  • Thumbnail for Nyquist frequency
    sampling, one first chooses the highest frequency to be preserved and recreated, based on the expected content (voice, music, etc.) and desired fidelity....
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  • will respond to frequencies at, or near, to the resonant frequency but will not respond to frequencies far from resonance. Hence frequencies far from resonance...
    65 KB (9,034 words) - 03:05, 31 July 2024
  • Thumbnail for Secure voice
    channels were used to sample the voice frequency spectrum from 250 Hz to 3 kHz and two channels were allocated to sample voice pitch and background hiss. In...
    12 KB (1,687 words) - 22:47, 25 April 2024
  • January 1, 2007. International distress frequencies, currently in use are: 2182 kHz for medium range maritime voice use. The US Coast Guard has said "beginning...
    12 KB (1,197 words) - 13:00, 10 September 2024
  • Thumbnail for Ultra low frequency
    [citation needed] Extremely low frequency Earth's field NMR Valery Troitskaya Through-the-earth mine communications Voice frequency "Rec. ITU-R V.431-7, Nomenclature...
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  • therefore typically use an 8000 Hz sampling frequency which is more than twice the highest usable voice frequency. Regardless, there are potential sources...
    35 KB (4,083 words) - 20:53, 19 September 2024
  • Thumbnail for Frequency-division multiplexing
    (Directly formed super group). 132 voice channels (2SG + 1G) can be formed using DTL plane the modulation and frequency plan are given in FIG1 and FIG2 use...
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  • to a format (characterized by the presence or absence of a single voice-frequency tone), which is suitable for transmission over an AC path, e.g., a...
    3 KB (434 words) - 17:28, 13 September 2024
  • Tone signaling carrier systems operated in the standard telephony voice frequency range (300Hz to 3500Hz). They replaced direct current (D.C.) signaling...
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  • line (ADSL) by placing wide-band digital signals at frequencies above the existing baseband analog voice signal carried on conventional twisted pair cabling...
    35 KB (4,237 words) - 03:29, 10 October 2024
  • An audio frequency or audible frequency (AF) is a periodic vibration whose frequency is audible to the average human. The SI unit of frequency is the hertz...
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  • Wideband audio (redirect from HD Voice)
    extends the frequency range of audio signals transmitted over telephone lines, resulting in higher quality speech. The range of the human voice extends from...
    14 KB (1,321 words) - 04:46, 10 May 2024
  • "SEHATI SEJIWA"". Archived from the original on 2014-11-20. Retrieved 2014-12-13. "Wai FM Iban frequency". "Wai FM Bidayuh frequency". Voice of Malaysia...
    30 KB (205 words) - 10:25, 21 September 2024
  • kilobits per second (kbit/s), corresponding to the capacity of one analog voice-frequency-equivalent communication channel. The DS0 rate, and its equivalents...
    3 KB (424 words) - 23:54, 25 April 2024
  • modulation of one or multiple carrier signals above the principal voice frequency or data rate. Carrier systems typically transmit multiple channels of...
    3 KB (389 words) - 20:06, 4 September 2024
  • voice channels are multiplexed in a high frequency carrier and passed through a balanced pair trunk line similar to those used for individual voice frequency...
    4 KB (606 words) - 14:30, 15 April 2024
  • another frequency represents picture white Spectrum shifting in signal processing, see Discrete Fourier transform#Shift theorem Frequency mixer Voice inversion...
    515 bytes (86 words) - 03:34, 27 September 2015
  • Thumbnail for High frequency
    High frequency (HF) is the ITU designation for the band of radio waves with frequency between 3 and 30 megahertz (MHz). It is also known as the decameter...
    17 KB (1,930 words) - 23:33, 6 August 2024
  • channel Single-frequency signaling, line signaling in which dial pulses or supervisory signals are conveyed by a single voice-frequency tone in each direction...
    536 bytes (105 words) - 06:32, 5 November 2023
  • In telecommunications, a repeating coil is a voice-frequency transformer characterized by a closed magnetic core, a pair of identical balanced primary...
    1 KB (170 words) - 23:54, 15 September 2024
  • 11/12 MHz, although other frequencies are in use. The primary HFGCS voice frequencies are 4724.0 kHz, 8992.0 kHz, 11175.0 kHz, and 15016.0 kHz. In addition...
    5 KB (610 words) - 07:46, 4 November 2023
  • Thumbnail for Electromagnetic radiation
    be characterized by either its frequency of oscillation or its wavelength. Electromagnetic waves of different frequency are called by different names since...
    82 KB (9,691 words) - 00:29, 10 October 2024