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Tektronix provides test and measurement instruments, solutions and services for the computer, semiconductor, military/aerospace, consumer electronics and education industries worldwide.
Bellcore’s term for one-way T-1 to the home over the plain old, single twisted pair wiring already going to homes. ADSL is designed to carry video to the home. ADSL, like ISDN, uses adaptive digital filtering, which is a way of adjusting itself to overcome noise and other problems on the line. According to Northern Telecom, initial ADSL field trails and business cases have focused on ADSL’s potential for video-on-demand service, in competition with cable pay-per-view and neighborhood video rental stores. But ADSL offers a wide range of other applications, including education and health care. Once telephone companies are able to deliver megabits to the home, Northern Telecom expects an explosion in potential applications including work-at-home access to corporate LANs, interactive services such as home shopping and home banking and even multi-party video gaming, interactive travelogues, and remote medical diagnosis. Multimedia retrieval will also become possible, enabling the home user to browse through libraries of text, audio, and image data – or simply subscribe to CD-quality music services. In the field of education, ADSL could make it possible to provide a low-cost “scholar’s workstation” – little more than a keyboard, mouse and screen – to every student, providing access to unlimited computer processing resources from their home. For a more modern version of ADSL, see DMT, which stands for Discrete Multi-Tone.
Industry:Entertainment
a) A transmission procedure that is not synchronized by a clock.
b) Any circuit or system that is not synchronized by a common clock signal.
Industry:Entertainment
Streaming of data only without any timing requirements. See Asynchronous Data Streaming, Synchronous Data Streaming.
Industry:Entertainment
In audio terms, the beginning of a sound. What type of attack a sound has is determined by how long it takes for the volume of the sound to go from silence to maximum level. It is critical to consider the attack time of sounds when applying processing Compression, gating, and other types of processors as they may destroy a sound’s attack, changing the character and quality of the audio. Reverbs can also be affected by attack time; careful use of a reverb’s predelay parameter will allow you to optimize the reverb for different types of attacks.
Industry:Entertainment
These are the four parameters found on a basic synthesizer envelope generator. An envelope generator is sometimes called a transient generator and is traditionally used to control the loudness envelope of sounds, though some modern designs allow for far greater flexibility. The Attack, Decay, and Release parameters are rate or time controls. Sustain is a level control. When a key is pressed, the envelope generator will begin to rise to its full level at the rate set by the attack parameter; upon reaching peak level it will begin to fall at the rate set by the decay parameters to the level set by the sustain control. The envelope will remain at the sustain level as long a the key is held down. Whenever a key is released, it will return to zero at the rate set by the release parameters.
Industry:Entertainment
A decrease in the level of a signal is referred to as attenuation.
In some cases, this is unintentional, as in the attenuation caused by using wire for signal transmission. Attenuators (circuits which attenuate a signal) may also be used to lower the level of a signal in an audio system to prevent overload and distortion.
Industry:Entertainment
a) Signals consisting of frequencies corresponding to a normally audible sound wave ranging between the frequencies of 20 Hz to 20 kHz.
b) A DC signal with varying amounts of ripple. It is sometimes possible to see the ripple on the DC signal to convey information of widely variable degrees of usefulness. c) The sound portion of a program.
Industry:Entertainment
The ability to independently select audio sources regardless of which video source is selected, even though the audio is normally associated with a particular video (as opposed to follow).
Industry:Entertainment
An audio-coding technique used with ATSC. The audio compression scheme invented by Dolby Laboratories and specified for the ATSC Digital Television Standard. In the world of consumer equipment, it is called Dolby Digital.
Industry:Entertainment
In general, this is often used to show an audio coding method such as linear PCM, AC-3, or MPEG audio, etc., but in some contexts it refers to the channel constitution in AC-3 tracks and the speaker layout.
Industry:Entertainment
