modulation+of+voice
11modulation — noun Date: 1501 1. an inflection of the tone or pitch of the voice; specifically the use of stress or pitch to convey meaning 2. a regulating according to measure or proportion ; tempering 3. a change from one musical key to another by modulating …
12Human voice — Voice redirects here. For other uses, see Voice (disambiguation). The spectrogram of the human voice reveals its rich harmonic content. The human voice consists of sound made by a human being using the vocal folds for talking, singing, laughing …
13Pulse-code modulation — PCM redirects here. For other uses, see PCM (disambiguation). Pulse code modulation (PCM) is a method used to digitally represent sampled analog signals. It is the standard form for digital audio in computers and various Blu ray, Compact Disc and …
14Ring modulation — is a signal processing effect in electronics, related to amplitude modulation or frequency mixing, performed by multiplying two signals, where one is typically a sine wave or another simple waveform. It is referred to as ring modulation because… …
15Single-sideband modulation — (SSB) is a refinement of amplitude modulation that more efficiently uses electrical power and bandwidth. It is closely related to vestigial sideband modulation (VSB) (see below).Amplitude modulation produces a modulated output signal that has… …
16Continuously variable slope delta modulation — (CVSD or CVSDM) is a voice coding method. It is a delta modulation with variable step size (i.e. special case of adaptive delta modulation), first proposed by Greefkes and Riemens in 1970. CVSD encodes at 1 bit per sample, so that audio sampled… …
17Electronic voice phenomenon — Electronic voice phenomena (EVP) are sections of static noise on the radio or electronic recording that some listeners believe sound like voices speaking words; paranormal investigators sometimes interpret these noises as the voices of ghosts or… …
18Frequency modulation — See also: Amplitude modulation In telecommunications, frequency modulation (FM) conveys information over a carrier wave by varying its frequency (contrast this with amplitude modulation, in which the amplitude of the carrier is varied while its… …
19Delta modulation — Principle of the delta PWM. The output signal (blue) is compared with the limits (green). These limits correspond to the reference signal (red), offset by a given value. Every time the output signal reaches one of the limits, the PWM signal… …
20Secure voice — (alternatively secure speech or ciphony) is a term in cryptography for the encryption of voice communication over a range of communication types such as radio, telephone or IP. Contents 1 History 2 Analog Secure Voice technologies 3 Di …
